(ну чтоб проучить, сначала надо выучить !)

Cisco CCNA 1 Final 2012 версия 3

1. When must a router serial interface be configured with the clock ratecommand?

when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
when the interface is functioning as a DCE device

2. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

3. Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

address translation
DHCP services
ftpd
web server

4. Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

leaving host A
leaving ATL
leaving Dallas
leaving NYC
5. Which range of port numbers are reserved for services that are commonly used by applications that run on servers?

0 to 255
0 to 1023
1024 to 49151
49152 to 65535
6. Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

Switch-6J>
Switch-6J#
Switch-6J(config)#
Switch-6J(config-if)#
Switch-6J(config-line)#

7. Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

127.0.0.1
192.168.64.196
192.168.254.1
192.168.254.9
192.168.254.254

8. Refer to the exhibit. Host A is unable to reach host B on the remote network. A technician attempted to ping the local gateway and the ping was successful. To verify the host configuration, the technician issued the ipconfig command. What is the likely cause of the problem?

The local NIC is incorrectly configured.
The subnet mask on host A is incorrectly configured.
The IP address on host A is incorrectly configured.
The default gateway on host A is incorrectly configured.
9. An organization has been assigned network ID 10.10.128.0 and subnet mask 255.255.224.0. Which IP address range can be used for this organization?

10.10.128.0 to 10.10.160.255
10.10.128.0 to 10.10.159.255
10.10.128.0 to 10.10.192.255
10.10.128.0 to 10.10.0.159
10.10.128.0 to 10.10.159.0

10. Refer to the exhibit. An employee wants to access the organization intranetfrom home. Which intermediary device should be used to connect the organization intranet to the Internet to enable this access?

hub
switch
router
wireless access point
11. Which OSI layer manages data segments?

application layer
presentation layer
session layer
transport layer
12. Which two types of media can provide bandwidth up to 1 Gb/s? (Choose two.)

10 BASE-T
100 BASE-T
100 BASE-FX
1000 BASE-TX
1000 BASE-SX
13. To enhance security in a network, the network administrator uses thesecommands: 
Router(config)#  line console 0 
Router(config-line)# password j1mdi2
Router(config-line)#  login 
What two conclusions are evident from these commands? (Choose two.)

Users who attempt to connect to the console port of the router must enter a password.
The entries permit access through the console by the use of j1mdi2 as the password.
The entries eliminate the need for authentication.
Access through the console will be denied because the console configuration is incomplete.
The entries prevent passwords from being displayed as plain text.

14. Refer to the exhibit. RouterB is configured properly. The Ethernet interface Fa0/0 of RouterA is configured with the use of the commands that are shown. However, a ping from the Fa0/0 interface of RouterA to the Fa0/0 interface of RouterB is unsuccessful. What action should be taken on RouterA to solve this problem?

Use the description command on the FastEthernet interface Fa0/0.
Configure the clock rate of the FastEthernet interface Fa0/0.
Use the no shutdown command on the FastEthernet interface Fa0/0.
Reboot the router.

15. Refer to the exhibit. When host A sends a frame addressed for host D, which hosts will receive the frame?

only host D
only hosts A and D
only hosts B, C, and D
all hosts

16. Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this?

Host X is assigned a network address.
Host Y is assigned a multicast address.
Host X and host Y belong to different networks.
The gateway addresses are broadcast addresses.
17. A user enters http://www.cisco.com/web1.htm in the address line of a browser. Which statement is true about this transaction?

The “http” portion indicates the protocol that is being used.
The “web1.htm” portion is the specific service name.
The retrieved web page will be displayed in URL code.
The “www.cisco.com” is the name of the web page file that is called

18. The tracert 10.1.3.2 command was issued on computer A. Computer A can ping other addresses on the local subnet. Computer A sent the first ICMP packet toward computer B with a TTL value of 1. A protocol analyzer that was running on computer B showed that the packet never reached its destination. Why did the packet not reach the destination?

There is a TCP/IP problem on computer A.
There is a routing loop between R1 and R2.
R1 does not have a route for the destination network.
The TTL for the packet was decreased to zero by R1.

19. A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?

access point
host
hub
router
switch

20. Which physical component is used to access and perform the initial configuration on a new unconfigured router?
Correct answer is option 2.

21. What can the user do from the command prompt, Router(config-line)# ?

Configure one of the network interfaces.
Configure one of the physical or virtual lines.
Verify the running configuration on the device.
Configure the parameters for one of the routing protocols.

22. Which option shows the PDU that contains the Layer 3 source and destination addressing for a packet?
Correct answer is option (image) 3.

23. Refer to the exhibit. The ping 127.0.0.1 command is issued on the local host. What do the ping results indicate?

The local host can send packets on the local network.
The TCP/IP stack on the local host operates properly.
The local host has full connectivity to the default gateway.
The local host has full connectivity to the remote network.
24. Which topology divides the collision domain and provides full media bandwidth to the hosts in the network?
Correct answer is option (image) 3.

25. Refer to the exhibit. Which option correctly identifies the network address, range of host addresses, and the broadcast address for the network that contains host A?
Correct answer is option (image) 3.




26. A technician is setting up a workgroup for six users and wants to allow users to share files without setting up a server. Which application layer protocol will provide for peer-to-peer file sharing in a workgroup?

DNS
SMB
HTTP
DHCP
27. Which router component will have contents erased when the command erase startup-config is issued?

flash
RAM
ROM
NVRAM

28. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?

Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.
29. How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0?

30
256
2046
2048
4094
4096

30. Refer to the exhibit. Host A is able to access resources on the local LAN but is unable to access any resources on the Internet. What is the likely cause of this problem?

The host subnet mask in incorrect.
The network uses private addresses.
The host address is a network address.
The default gateway is on a different subnet from the host.

31. What is described by the network access layer of the TCP/IP model?

rules for packet acknowledgment, error recovery, and sequencing
rules for the handoff from the internet layer to the network access protocols
rules for how source and destination hosts exchange data between programs
rules for determining which processes can be used to route messages through an internetwork

32. Which two factors contribute to the increased throughput when all nodes of a LAN are connected to a switch instead of a hub? (Choose two.)

full-duplex operation
collision-free environment
logical bus media access
broadcast-free environment
point-to-multipoint topology

33. Which application layer protocol allows administrators to log into a server from remote locations and control a server as though logged in locally?

DNS
FTP
DHCP
SMTP
Telnet

34. A network technician has made a UTP cable that is terminated as T568A on one end and T568B on the opposite end. What type of cable has been constructed?

patch
console
crossover
straight-through
35. Which application belongs to the category of the client/server model?

using Telnet to access a router
exchanging information via instant messaging
printing a document to a locally connected printer
scanning a document with a directly connected scanner

36. Refer to the exhibit. Which two layers of the OSI model describe the same functions as the transport and internet layers of the TCP/IP model? (Choose two.)

application layer
presentation layer
session layer
transport layer
network layer
data link layer
physical layer

37. What command can be used to troubleshoot domain name resolution issues?

get
arp -a
tracert
nslookup

38. Refer to the exhibit. For connecting two routers with an Ethernet crossover cable, which interface should be used?

A
B
C
D
39. A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?

console
enable
enable secret
VTY
40. Which three addresses belong to the category of public IP addresses? (Choose three.)

127.0.0.1
196.1.105.6
132.11.9.99
10.0.0.1
172.16.9.10
46.1.1.97
41. A network administrator is configuring several switches for a network. The switches have similar configurations and only minor differences. The administrator wants to save all commands that are issued on the first switch to a text file for editing. Which transfer option should be selected in HyperTerminal?
Correct answer is option (image) 3. 

42. Which option represents a point-to-point logical topology diagram?
Correct answer is option (image) 4.

43. Refer to the exhibit. What two facts can be determined from the session information that is displayed? (Choose two.)

The protocol is a connection-oriented protocol.
This exchange is part of the three-way handshake.
The SYN flag is representing the initial establishment of a session.
The destination port indicates that an FTP session has been initiated.
The source port does not support communication with the destination port that is listed.

44. Which communication tool allows real-time collaboration?

wiki
e-mail
weblog
instant messaging

45. Which prompt is associated with the privileged exec mode?

R1>
R1#
R1(config)#
R1(config-router)#

46. What is the effect of the command copy running-config tftp?

copies the configuration from a remote machine into RAM
copies the configuration from a remote machine into NVRAM
copies the configuration currently in RAM to a remote machine
copies the configuration currently in NVRAM to a remote machine

47. Refer to the exhibit. Which type of network design is shown?

client/server
wide area
dedicated server
peer-to-peer

48. Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1 using Telnet. Which statement is true about this connection?

The data is automatically encrypted.
A Telnet server process is running on PC1.
The connection is made through a VTY session on the router.
A GET request was sent to RouterB to retrieve data during this session.

49. Refer to the exhibit. A network technician wants to connect host A to the console of a Cisco switch to initialize the configuration. What type of cable is required for this connection?

straight-through cable
crossover cable
rollover cable
serial cable

50. A technician makes several changes to the running configuration on a router, but the desired results are not achieved. The technician issues the reload command. What action will be taken by the router?

All changes will be lost and the router will restart immediately.
Changes will be saved automatically and the router will restart.
The user will be prompted to save changes before the router restarts.
The router will detect changes to the running configuration and will reload using the configuration stored in RAM.

Cisco CCNA 1 Final 2012 версия 2

1. When must a router serial interface be configured with the clock ratecommand?

when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
when the interface is functioning as a DCE device

2. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)
Router(config)#  line vty 0 3 
Router(config-line)#  password c13c0
Router(config-line)#  login

The entries specify three Telnet lines for remote access.
The entries specify four Telnet lines for remote access. 
The entries set the console and Telnet password to “c13c0″.
Telnet access will be denied because the Telnet configuration is incomplete.
Access will be permitted for Telnet using “c13c0″ as the password.

3. Which of the following are the address ranges of the private IP addresses? (Choose three.) 
10.0.0.0 to 10.255.255.255 
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
172.16.0.0 to 172.31.255.255 
192.168.0.0 to 192.168.255.255 
127.16.0.0 to 127.31.255.255

4. Which password is automatically encrypted when it is created?

vty
aux
console
enable secret 
enable password

5. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17 
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

6. Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

address translation 
DHCP services
ftpd
web server

7. Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

Switch-6J>
Switch-6J# 
Switch-6J(config)#
Switch-6J(config-if)#
Switch-6J(config-line)#

8. Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

127.0.0.1
192.168.64.196
192.168.254.1 
192.168.254.9
192.168.254.254

9. Refer to the exhibit. The tracert command is initiated from PC1 to PC4. Which device will send a response to the initial tracert packet from PC1?

Athens
Ankara
London
Paris
PC4

10. Which information is used by the router to determine the path between the source and destination hosts?

the host portion of the IP address
the network portion of the IP address 
host default gateway address
the MAC address

10. Refer to the exhibit. A PC is communicating with another PC on a remote network. The two networks are connected by three routers. Which action will help to identify the path between the hosts?

Use the ipconfig command at the host.
Use the ipconfig/all command at the destination.
Use the tracert command at the host. 
Use the ping command at the destination.

11. Refer to the exhibit. The diagram represents the process of sending e-mail between clients. Which list correctly identifies the component or protocol used at each numbered stage of the diagram?

1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA
1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA
1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA
1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA

12. Refer to the exhibit. The router of the company failed and was replaced. After the replacement, hosts C and D in the Education office are able to ping each other, but they are unable to access the hosts in the Accounts office. What is the likely cause of the problem?

The IP address at the fa0/0 interface of the router is incorrectly configured.
The subnet mask at the fa0/1 interface of the router is incorrectly entered. 
The IP address at the serial interface of the router is incorrectly configured.
The hosts in the Accounts office are not on the same subnet as the hosts in the Education office.

13. Refer to the exhibit. Host A and B are unable to communicate with each other. What is the reason for this?

Host A is assigned a network address.
Host B is assigned a multicast address.
Host A and host B belong to different networks.
The gateway addresses are network addresses.

14. Refer to the exhibit. Host B attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured at the FastEthernet interface fa0/1 of the San Francisco router. The packet inside the captured frame has the source IP address 10.10.1.2, and the destination IP address is 10.31.1.20. What is the destination MAC address of the frame at the time of capture?

0060.7320.D632
0060.7320.D631
0040.8517.44C3
0009.B2E4.EE03
0010.C2B4.342

15. Refer to the exhibit. While configuring a network, a technician wired each end of a Category 5e cable as shown. Which two statements are true about this setup? (Choose two.)

The cable is suitable for connecting a switch to a router Ethernet port. 
The cable is suitable for connecting dissimilar types of devices. 
The cable is unusable and must be rewired.
The cable is terminated in a way that the transmit pin is wired to the receive pin.
The cable simulates a point-to-point WAN link.

16. Refer to the exhibit. Host A sends a frame with the destination MAC address as FFFF.FFFF.FFFF. What action will the switch take for this frame?

It will drop the frame.
It will send the frame back to host A.
It will send the frame to all hosts except host A. 
It will forward the frame to the default gateway.

17. Well-known services and applications use which range of TCP/UDP port numbers?

0 to 255
0 to 1023
1024 to 49151
49152 to 65535

18. Which three IPv4 addresses represent subnet broadcast addresses? (Choose three.)

192.168.4.63 /26 
192.168.4.129 /26
192.168.4.191 /26 
192.168.4.51 /27
192.168.4.95 /27 
192.168.4.221 /27

19. Which three statements are true about network layer addressing? (Choose three.)

The addresses are 48 bits long.
Network layer addressing is used by Ethernet switches to make forwarding decisions.
It uses a hierarchical structure .
It does not support broadcasts.
It uniquely identifies each host.
A portion of the address is used to identify the network.

20. Which OSI layer addressing is required to route packets between two networks?

Layer 1
Layer 2
Layer 3 
Layer 4

21. What type of network is maintained if a server takes no dedicated role in the network?

mainframe
client/server
peer-to-peer 
centralized

22. Refer to the exhibit. Host A is requesting a web page from the web server. Which option represents the socket to which the request is made?

80
www.cisco.com
10.0.0.130
10.0.0.130:80

23. A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?

access point
host
hub
router
switch

24. Which statement describes the correct use of addresses to deliver an e-mail message from HostB to the e-mail service that is running on ServerA?

HostB uses the MAC address of ServerA as the destination.
Router B uses a Layer 3 network address to route the packet. 
Router A uses the Layer 4 address to forward the packet to Router B.
Via the use of a Layer 3 address, ServerA assigns the message to the e-mail service.

25. Refer to the exhibit. Host A is configured with the correct IP address for the default gateway of the router R1 FastEthernet0/1 interface. How will a packet that is sent from host A to host B be handled by the devices on the network?

R1 will drop the packet because R1 does not have a specific route in its routing table to the 10.1.1.0/24 network.
R1 will forward the packet to its default gateway, the next hop router R2. R2 will forward the packet to the directly connected network 10.1.1.0/24.
R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a default route to network 10.1.1.0/24.
R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a route that is learned by a routing protocol to network 10.1.1.0/24.

26. Which option correctly identifies the interface or interfaces used to connect the router to a CSU/DSU for WAN connectivity?

This correct answer is image 4 ( last image ).

27. Refer to the exhibit. Host A is unable to reach host B on the remote network. A technician attempted to ping the local gateway and the ping was successful. To verify the host configuration, the technician issued the ipconfig command. What is the likely cause of the problem?

The local NIC is incorrectly configured.
The subnet mask on host A is incorrectly configured.
The IP address on host A is incorrectly configured.
The default gateway on host A is incorrectly configured.

28. A network administrator is configuring several switches for a network. The switches have similar configurations and only minor differences. The administrator wants to save all commands that are issued on the first switch to a text file for editing. Which transfer option should be selected in HyperTerminal?

Correct answer is image tree (3).

29. How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0?

30
256
2046
2048
4094
4096

30. Which application layer protocol allows administrators to log into a server from remote locations and control a server as though logged in locally?

DNS
FTP
DHCP
SMTP
Telnet

31. During the encapsulation process, what is the PDU of the internet layer?

bit
data
frame
packet
segment

32. Which service is used when the nslookup command is issued on a computer?

FTP
DNS 
DHCP
Telnet

33. Refer to the exhibit. A network technician creates equal-sized subnets of network 192.168.2.0/24 using the subnet mask 255.255.255.224. If the technician wishes to calculate the number of host addresses in each subnet by using the formula that is shown in the exhibit, what value will be used for n?

1
2
3
4
5

34. What are the default terminal emulation software settings when configuring a Cisco device through a console port?

Bits per second: 19200
Data bits: 7
Parity: None
Stop bits: 0
Flow control: None

Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None

Bits per second: 19200
Data bits: 7
Parity: None
Stop bits: 0
Flow control: Hardware

Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: Hardware

35. In a packet-switched data network, what is used to reassemble the packets in the correct order at the destination device?

source address
sequence number 
priority assignment
destination address

36. Refer to the exhibit. A network administrator tries to test the connectivity between routers R1 and R2, but the attempt to ping is unsuccessful. Based on the show ip interface brief command outputs, what could be the possible cause of the problem?

Interface S0/0/0 on router R1 is shut down.
Interface S0/0/0 on router R1 is configured with an incorrect IP address.
Interface S0/0/0 on router R2 is administratively down.
Interface S0/0/0 on router R2 does not have the clock rate settings configured.

37. Which router configuration mode will require user authentication if an administrator issues the enable secret command?

user executive mode
privileged executive mode
global configuration mode
service specific configuration mode

38. Which location of router memory is cleared with the erase startup-config command?

flash
RAM
ROM
NVRAM

39. Which subnet mask should be used for a Class B network that is divided into subnets and will accommodate between 800 hosts and 1000 hosts?

255.255.255.0
255.255.254.0
255.255.252.0
255.255.248.0
255.255.240.0

40. Which two programs can be used to accomplish terminal emulation for configuring a router from the CLI through the console port? (Choose two.)

HyperTerminal
Internet Explorer
Minicom
Secure Shell
Telnet

41. Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B. What action can be preformed to correct the network issue?

issue the clock rate command on interface Serial 0/0/0
issue the description command on interface Serial 0/0/1
issue the ip address command on interface FastEthernet 0/0
issue the no shutdown command on interface FastEthernet 0/1

42. Refer to the exhibit. A web browser running on host PC1 sends a request for a web page to the web server with an IP address 192.168.1.254/24. What sequence of steps will follow in order to establish the session before data can be exchanged?

The session will be initiated using UDP. No additional acknowledgment will be required to establish the session.
The session will be initiated using TCP. No additional acknowledgment will be required to establish the session.
The session will be initiated using UDP. The returned web page will serve as an acknowledgment for session establishment.
The session will be initiated using TCP. A three-way handshake must be successfully completed before the session is established.

43. Which prompt is associated with the privileged exec mode?
R1>
R1#
R1(config)#
R1(config-router)#

44. A user sees the command prompt: Router(config-if)# . What task can be performed at this mode?

Reload the device.
Perform basic tests.
Configure individual interfaces.
Configure individual terminal lines.

45. Refer to the exhibit. Interface Fa0/0 on router A is generating excessive broadcast traffic. Which LAN segments will affected by the excessive broadcasts?

Only the 192.168.1.200/30 network will be affected.
Only the link between 192.168.1.201 and port Fa0/5 on SW1 will be affected.
Both the 192.168.1.200/30 and 192.168.1.204/30 networks will be affected.
Only the links between 192.168.1.201 and port Fa0/7 on SW2 will be affected.

46. What is the effect of using the Router# copy running-config startup-config command on a router?

The contents of ROM will change.
The contents of RAM will change.
The contents of NVRAM will change.
The contents of flash will change.

47. Which option represents a point-to-point logical topology diagram?
The correct answer is last image.

48. In a network design project, a network designer needs to select a device to provide collision free connections to 40 hosts on the LAN. Which device should be selected?

hub
router
switch
firewall

49. Which communication tool allows real-time collaboration?

wiki
e-mail
weblog
instant messaging

Cisco CCNA 1 Final 2012 версия 1

Cisco CCNA 1 Final 2012 версия 3

Ответы на финальный экзамен Cisco(CCNA Exploration 1 — FINAL Exam Answers Version 4.0)

Cisco CCNA 1 Final 2012 версия 1

Which of the following are the address ranges of the private IP addresses? (Choose three.)

10.0.0.0 to 10.255.255.255 
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255 
127.16.0.0 to 127.31.255.255

Which two functions of the OSI model occur at layer two? (Choose two.)

physical addressing 
encoding
routing
cabling
media access control

Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

address translation
DHCP services
ftpd
web server

What is true regarding network layer addressing? (Choose three.)

uses a flat structure
prevent broadcasts
heirarchical
uniquely identifies each host
48 bits in length
contains a network portion

Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

leaving host A
leaving ATL
leaving Dallas 
leaving NYC

Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown?

1
3
4
5
7

A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?

console
enable
enable secret 
VTY

Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

127.0.0.1
192.168.64.196
192.168.254.1 
192.168.254.9
192.168.254.254

Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?

application
presentation
session
transport

When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data?

IP
UDP
Ethernet
a connectionless acknowledgement
an upper-layer, connection-oriented protocol or service

Refer to the exhibit. Host C is able to ping 127.0.0.1 successfully, but is unable to communicate with hosts A and B in the organization. What is the likely cause of the problem?

Hosts A and B are not on the same subnet as host C.
The IP addresses on the router serial interfaces are wrong.
The subnet mask on host C is improperly configured. 
The FastEthernet interface fa0/0 of router 1 is wrongly configured.

Refer to the exhibit. Which list refers only to end devices?

D,E,F,G
A,H,B,C
A,D,E,F
A,D,E,G

Refer to the exhibit. Host A sends a frame with the destination MAC address as FFFF.FFFF.FFFF. What action will the switch take for this frame?

It will drop the frame.
It will send the frame back to host A.
It will send the frame to all hosts except host A. 
It will forward the frame to the default gateway.

Which subnet mask will allow 2040 hosts per subnet on the IP network 10.0.0.0?

255.255.0.0
255.255.254.0
255.255.252.0
255.255.248.0 
255.255.240.0
255.255.255.128

Refer to the exhibit. RouterB is configured properly. The Ethernet interface Fa0/0 of RouterA is configured with the use of the commands that are shown. However, a ping from the Fa0/0 interface of RouterA to the Fa0/0 interface of RouterB is unsuccessful. What action should be taken on RouterA to solve this problem?

Use the description command on the FastEthernet interface Fa0/0.
Configure the clock rate of the FastEthernet interface Fa0/0.
Use the no shutdown command on the FastEthernet interface Fa0/0. 
Reboot the router.

To send data through a network, what two flags are used to establish a session? (Choose two.)

ACK 
CRC
SYN 
Ack #
Port #
Seq #

Which statement is true about the TTL value of an IPv4 packet?

It determines the priority of a packet.
It specifies the remaining “life” of the packet.
It indicates that the packet has been fragmented.
It denotes the data payload type that the packet is carrying.

Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this?

Host X is assigned a network address.
Host Y is assigned a multicast address.
Host X and host Y belong to different networks.
The gateway addresses are broadcast addresses.

What type of network is maintained if a server takes no dedicated role in the network?

mainframe
client/server
peer-to-peer
centralized

A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?

access point
host
hub
router 
switch

Which physical component is used to access and perform the initial configuration on a new unconfigured router?
Correct answer is image 2 , CONSOLE !

A user sees the command prompt: Router(config-if)# . What task can be performed at this mode?

Reload the device.
Perform basic tests.
Configure individual interfaces. 
Configure individual terminal lines.

What is the correct order for PDU encapsulation?
Correct answer is first image !

What information can be gathered by using the command netstat?

the default gateway
the routing protocol
active TCP connections
the locally configured subnet mask

How can ARP be used to help document the network?

It can list each hop on the way to a destination host.
It can show the average latency of hosts on the network.
It can provide a list of physical addresses on the network.
It can indicate which hosts are not responding to network traffic.

What is the protocol data unit that is associated with the data link layer of the OSI reference model?

data
frame
packet
segment

Which application layer protocol allows administrators to log into a server from remote locations and control a server as though logged in locally?

DNS
FTP
DHCP
SMTP
Telnet

Which statement identifies the DNS protocol?

It transmits information using TCP port 25.
It transfers and conveys information using HTML pages.
It matches a resource name with the required network address.
It requests and assigns an IP address, default gateway, and server addresses to hosts.

Which password would allow a user to establish a Telnet session with a Cisco device?

VTY password
enable password
console password
enable secret password

Which identifier is contained in the header of the Layer 2 Ethernet frame?

timing and synchronization of bits
source and destination port numbers
logical source and destination addresses
physical source and destination addresses

What happens when a node on an Ethernet network is creating a frame and it does not have the destination MAC address?

The node drops the frame.
The node sends out a Layer 3 broadcast message.
The node sends a message directly to the router for the address.
The node sends out an ARP request with the destination IP address.

An administrator makes changes to the default configuration of a router and saves them to NVRAM. After testing, it is discovered that the configurations did not have the desired effect and must be removed. What steps must be taken to remove the changes and return the router to the default configuration?

Reboot the router.
Use no version of the commands that are issued.
Issue the erase startup-config command, and then reboot the router.
Issue the erase running-config command, and then reboot the router.

A network administrator is tasked with connecting two workgroups that are configured to use different subnets. Which device should be selected to allow connectivity between users on the two networks?

hub
switch
router
wireless access point

Which two programs can be used to accomplish terminal emulation for configuring arouter from the CLI through the console port? (Choose two.)

HyperTerminal
Internet Explorer
Minicom
Secure Shell
Telnet

Which statement accurately describes file sharing in a peer-to-peer network?

A dedicated server is required.
Access control is decentralized.
Files are typically stored on the most powerful peer in the network.
Peers can either make requests, or respond to requests, but not both.

What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)

frame delimiting
data encapsulation
logical addressing
error detection
accessing the media

Which router configuration mode would an administrator use to configure the router for SSH or Telnet login access?

line
router
global
interface
privileged EXEC

Refer to the exhibit. Which device should be included in the network topology to provide Layer 2 connectivity for all LAN devices, provide multiple collision domains, and also provide a connection to the rest of the network?

server
hub
switch
PC

Refer to the exhibit. A technician has been asked to test connectivity from PC1 to a remote network. Which action will indicate if there is remote connectivity?
Correct answer is first image !

What purpose does a hostname serve on a router?

uniquely identifies a router on the internet
used by routing protocols to identify peer routers
provides device identification to users logging on remotely
determines the hosts that are allowed to connect to the device

Which prompt is associated with the privileged exec mode?

R1>
R1#
R1(config)#
R1(config-router)#

A technician wishes to connect two computers to move data from one to the other before reloading the operating system. The NICs on both PCs do not support autosensing feature. Which procedure will satisfy the requirement?

Interconnect the two PCs with a rollover cable.
Interconnect the two PCs with two rollover cables and a hub.
Interconnect the two PCs with a crossover cable.
Interconnest the two PCs with two crossover cables and a hub.

Refer to the exhibit. Interface Fa0/0 on router A is generating excessive broadcast traffic. Which LAN segments will affected by the excessive broadcasts?

Only the 192.168.1.200/30 network will be affected.
Only the link between 192.168.1.201 and port Fa0/5 on SW1 will be affected.
Both the 192.168.1.200/30 and 192.168.1.204/30 networks will be affected.
Only the links between 192.168.1.201 and port Fa0/7 on SW2 will be affected.

Two routers are connected via their serial ports in a lab environment. The routers are configured with valid IP addresses, but they cannot ping each other. The show interface serial0/0 command shows that the serial0/0 interface is up but the line protocol is down. What could be the cause of this problem?

The no shutdown command has not been applied to the interfaces.
The clock rate command has not been entered on the DCE interface.
The interface timers are not cleared.
The FastEthernet interface is emulating a serial interface by assigning it a timing signal.

Refer to the exhibit. Which layered network model is shown in the diagram?

Cisco
IETF
OSI
TCP/IP

Refer to the exhibit. Host A is unable to reach host B on the remote network. A technician attempted to ping the local gateway and the ping was successful. To verify the host configuration, the technician issued the ipconfig command. What is the likely cause of the problem?

The local NIC is incorrectly configured.
The subnet mask on host A is incorrectly configured.
The IP address on host A is incorrectly configured.
The default gateway on host A is incorrectly configured.

Which option shows how a router will route packets to a remote network?
Correct answer is image 4 !

An organization has been assigned network ID 10.10.128.0 and subnet mask 255.255.224.0. Which IP address range can be used for this organization?

10.10.128.0 to 10.10.160.255
10.10.128.0 to 10.10.159.255
10.10.128.0 to 10.10.192.255
10.10.128.0 to 10.10.0.159
10.10.128.0 to 10.10.159.0

A network administrator is configuring several switches for a network. The switches have similar configurations and only minor differences. The administrator wants to save all commands that are issued on the first switch to a text file for editing. Which transfer option should be selected in HyperTerminal?
Correct answer is image 3, CAPTURE TEXT !

Все версии экзаменов Cisco CCNA 1 Final 2012 (Version 2)

Cisco CCNA 1 Final 2012 версия 3

Ответы на финальный экзамен Cisco(CCNA Exploration 1 — FINAL Exam Answers Version 4.0)

Внимание! Правильные ответы обозначаются крестиком «х».  Поехали!

1 A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

Use the ipconfig /all command at the host�s command prompt.
X Use the ping 127.0.0.1 command at the command prompt.
Use the traceroute command at the command prompt to identify any failures on the path to the gateway.
Use FTP to check for connectivity to remote sites.
Download a troubleshooting tool from the PC manufacturer’s website.

2 Refer to the exhibit. Which set of devices contains only intermediary devices?

X A, B, D, G
A, B, E, F
C, D, G, I
G, H, I, J

3 Refer to the exhibit. When computer A sends a frame to computer D, what computers receive the frame?

X only computer D
only computer A and computer D
only computer B, computer C, and computer D
all computers

4 Which password is automatically encrypted when it is created?

vty
aux
console
X enable secret
enable password

5 Which three statements characterize the transport layer protocols? (Choose three.)

X TCP and UDP port numbers are used by application layer protocols.
TCP uses port numbers to provide reliable transportation of IP packets.
UDP uses windowing and acknowledgments for reliable transfer of data.
X TCP uses windowing and sequencing to provide reliable transfer of data.
X TCP is a connection-oriented protocol. UDP is a connectionless protocol.

6 Which type of media is immune to EMI and RFI? (Choose two.)

10 Base-T
10 Base-2
10 Base-5
X 100 Base-FX
100 Base TX
X 1000 Base LX

7 Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

127.0.0.1
192.168.64.196
X 192.168.254.1
192.168.254.9
192.168.254.254

8 Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correctly identifies the component or protocol used at each numbered stage of the diagram.

1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA
1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA
1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA
1.MDA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MUA 7.POP 8.MDA
X 1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA

9 Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

X address translation
DHCP services
ftpd
web server

10 Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B? What action can be preformed to correct the network issue?

issue the ip address command on interface FastEthernet 0/0
X issue the no shutdown command on interface FastEthernet 0/1
issue the clock rate command on interface Serial 0/0/0
issue the description command on interface Serial 0/0/1

11 Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)

X 172.16.4.63 /26
172.16.4.129 /26
X 172.16.4.191 /26
172.16.4.51 /27
X 172.16.4.95 /27
172.16.4.221 /27

12 What are three characteristics of CSMA/CD? (Choose three.)

Devices can be configured with a higher transmission priority.
A jam signal indicates that the collision has cleared and the media is not busy.
X A device listens and waits until the media is not busy before transmitting.
The device with the electronic token is the only one that can transmit after a collision.
X All of the devices on a segment see data that passes on the network medium.
X After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

13 In a Cisco IOS device, where is the startup-configuration file stored?

Flash
X NVRAM
RAM
ROM

14 A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?

access point
host
hub
X router
switch

15 Which OSI layer protocol does IP rely on to determine whether packets have been lost and to request retransmission?

application
presentation
session
X transport

16 Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)

Router(config)# line vty 0 3
Router(config-line)# password c13c0
Router(config-line)# login

The entries specify three Telnet lines for remote access.
X The entries specify four Telnet lines for remote access.
The entries set the console and Telnet password to «c13c0″.
Telnet access will be denied because the Telnet configuration is incomplete.
X Access will be permitted for Telnet using «c13c0″ as the password.

17 Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

Switch-6J>
X Switch-6J#
Switch-6J(config)#
Switch-6J(config-if)#
Switch-6J(config-line)#

18 Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?

172.16.128.0 255.255.255.224
172.16.128.0 255.255.0.0
X 172.16.128.0 255.255.192.0
172.16.128.0 255.255.224.0
172.16.128.0 255.255.255.192

19 When must a router serial interface be configured with the clock rate command?

when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
X when the interface is functioning as a DCE device

20 When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?

connectionless acknowledgements
X upper-layer connection-oriented protocols
Network layer IP protocols
Transport layer UDP protocols

21 A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?

console
enable
X enable secret
VTY

22 Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on RouterA?

a FTP client
a telnet client
X a terminal emulation program
a web browser

23 Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1. Which two statements are true about the application layer protocol that is used to make this connection? (Choose two.)

The data is encrypted.
X The connection type is called a VTY session.
A server process is running on PC1.
A GET request is sent to RouterB.
X The application name is the same for the service, protocol, and client.

24 The Layer 4 header contains which type of information to aid in the delivery of data?

X service port number
host logical address
device physical address
virtual connection identifier

25 Refer to the exhibit. What two facts can be determined about the exhibited topology? (Choose two.)

X A single broadcast domain is present
Two logical address ranges are required.
Three broadcast domains are shown.
Four networks are needed.
X Five collision domains exist.

26 Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
X IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

27 Refer to the exhibit. Cable 1 and cable 2 have the ends wired for specific physical layer requirements. The table lists each segment by number and the cable which has been installed by the network technician between the network components on that segment. From the data given, which segments have the correct cable installed? (Choose three.)

X segment1
segment2
X segment3
X segment4
segment5

28 What is true regarding network layer addressing? (Choose three.)

uses a flat structure
prevent broadcasts
X heirarchical
X uniquely identifies each host
48 bits in length
X contains a network portion

29 Refer to the exhibit. A router, whose table is shown, receives a packet that is destined for 192.168.1.4. How will router treat the packet?

The packet will be dropped.
The packet will be forwarded via FastEthernet 0/0.
X The packet will be forwarded to the destination host.
The packet will be forwarded to the 192.168.1.3 next-hop address.

30 Refer to the exhibit. Which two statements describe the information that is represented in the header? (Choose two.)

This is a server response.
The UDP protocol is being used.
X The destination port indicates a Telnet session.
X The return segment will contain a source port of 23.
The next session originated from the client of this session will use the source port number 13358.

31 Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?

00-08-a3-b6-ce-46
X 198.133.219.25:80

http://www.cisco.com

C 198.133.219.0/24 is directly connected, FastEthernet0/0

32 During the encapsulation process, which identifiers are added at the transport layer?

two networks routing the packets
X two applications communicating the data
two hosts at either end of the communication
two nodes on the local network exchanging the frame

33 Refer to the exhibit. A student has wired each end of a CAT 5e cable as shown. What is the result? (Choose two.)

The cable is unusable and must be rewired.
The cable is suitable for use as a Gigabit Ethernet straight-through.
X The cable is suitable for use as a Fast Ethernet crossover.
The cable is suitable for use as a rollover cable.
The cable is suitable for use as a Gigabit Ethernet crossover.
X The cable is suitable for use between two 100 Mbps Auto-MDIX capable switches.

34 Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown?

1
X 3
4
5
7

35 Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?

Host A was assigned a network address.
Host B was assigned a multicast address.
Host A and Host B belong to different networks.
X The gateway address was assigned a broadcast address.

36 Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

Connection 1 — rollover cable
Connection 2 — straight-through cable
Connection 3 — crossover cable

Connection 1 — crossover cable
Connection 2 — rollover cable
Connection 3 — crossover cable

Connection 1 — straight-through cable
Connection 2 — crossover cable
Connection 3 — crossover cable

X Connection 1 — straight-through cable
Connection 2 — crossover cable
Connection 3 — straight-through cable
Connection 1 — crossover cable
Connection 2 — straight-through cable
Connection 3 — crossover cable

37 Refer to the exhibit. What does the IP address 192.168.33.2 represent?

The host’s default gateway.
The host’s IP address.
X The host’s primary domain name server.
The IP address of the website resolver1.mooki.local.
The IP address of the host’s homepage.

38 Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)

This exchange is part of the three-way handshake.
The source port indicates that a Telnet session has been initiated.
The data is flowing from server to client.
X The destination port indicates that an HTTP session has been initiated.
X The data listed is associated with the transport layer.
The source port does not support communication with the destination port that is listed.

39 Which of the following are the address ranges of the private IP addresses? (Choose three.)

X 10.0.0.0 to 10.255.255.255
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
X 172.16.0.0 to 172.31.255.255
X 192.168.0.0 to 192.168.255.255
127.16.0.0 to 127.31.255.255

40 Which two functions of the OSI model occur at layer two? (Choose two.)

X physical addressing
encoding
routing
cabling
X media access control

41 Which range of port numbers are reserved for services that are commonly used by applications that run on servers?

0 to 255
X 0 to 1023
1024 to 49151
49152 to 65535

42 As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?

255.255.0.0
255.255.248.0
255.255.252.0
X 255.255.254.0
255.255.255.0
255.255.255.128

43 Refer to the exhibit. The tracert command is initiated from PC1 to the destination PC4. Which device will send a response to the initial packet from PC1?

X London
Paris
Athens
Ankara
PC4

44 Refer to the exhibit. Host A is transmitting data to host B. What addresses will host A use to for the destination IP and MAC addresses in this communication?

Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.62
Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.75
Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.62
Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.75
X Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.75
Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.94

45 Refer to the exhibit. Which logical topology best describes the exhibited network?

star
ring
point-to-point
X multiaccess
mesh

46 Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

IP address incorrectly entered
network cables unplugged
X subnet mask incorrectly entered
network card failure

47 Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three.)

192.168.18.38
192.168.18.48
X 192.168.18.49
X 192.168.18.52
X 192.168.18.59
192.168.18.63

48 Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.)

X The address that is assigned to the computer represents private addressing.
X The computer is unable to communicate outside of the local network.
The network of this computer can have 126 hosts.
X The prefix of the computer address is /27.
The IP address that is assigned to the computer is routable on the Internet.
The IP address that is assigned to the computer is a broadcast address.

49 Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

leaving host A
leaving ATL
X leaving Dallas
leaving NYC

50 Which of the following OSI layers offers reliable, connection-oriented data communication services?

application
presentation
session
X transport
network

CCNA CISCO ANSWERS

1. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
• show running-config
• show startup-config
• show interfaces
• show ip route
• show version
• show memory

2. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
• enable password classline console 0password ccna
• enable secret ciscoenable password classline console 0password ccna
• enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password classline console 0password ccna
• enable secret ciscoenable password 7 14141E0A1F17line console 0password 7 020507550A • enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password 7 14141E0A1F17line console 0password 7 020507550A

1. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
• Host B can transmit immediately since it is connected on its own cable segment.
• Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
• Host B must send a request signal to Host A by transmitting an interframe gap.
• Host B must wait until it is certain that Host A has completed sending its frame.

1. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
• Presentation
• Transport
• Data Link
• Physical

2. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
• light injector
• OTDR
• TDR
• multimeter

1. Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)
• the Layer 3 protocol selected
• the geographic scope of the network
•  the PDU defined by the transport layer
• the physical layer implementation
• he number of hosts to be interconnected

2. Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server?
• 00-1c-41-ab-c0-00
• 00-0c-85-cf-65-c0
• 00-0c-85-cf-65-c1
• 00-12-3f-32-05-af

3. Which options are properties of contention-based media access for a shared media? (Choose three.)
• non-deterministic
• less overhead
• one station transmits at a time
• collisions exist
• devices must wait their turn
• token passing

4. What is true concerning physical and logical topologies?
• The logical topology is always the same as the physical topology.
• Physical topologies are concerned with how a network transfers frames.
• Physical signal paths are defined by Data Link layer protocols.
• Logical topologies consist of virtual connections between nodes.

5. What is true regarding media access control? (Choose three.)
• Ethernet utilizes CSMA/CD
defined as placement of data frames on the media
contention-based access is also known as deterministic
802.11 utilizes CSMA/CD
• Data Link layer protocols define the rules for access to different media
controlled access contains data collisions

6. Which statements describe the logical token-passing topology? (Choose two.)
• Network usage is on a first come, first serve basis.
• Computers are allowed to transmit data only when they possess a token.
• Data from a host is received by all other hosts.
• Electronic tokens are passed sequentially to each other.
• Token passing networks have problems with high collision rates.

7. A network administrator has been asked to provide a graphic  representation of exactly where the company network wiring and equipment are located in the building. What is this type of drawing?
• logical topology
• physical topology
• cable path
• wiring grid
• access topology

8. What is the purpose of the preamble in an Ethernet frame?
is used as a pad for data
identifies the source address
identifies the destination address
marks the end of timing information
• is used for timing synchronization with alternating patterns of ones and zeros

9. What statements are true regarding addresses found at each layer of the OSI model? (Choose two.)
• Layer 2 may identify devices by a physical address burned into the network card
• Layer 2 identifies the applications that are communicating
• Layer 3 represents a hierarchical addressing scheme
• Layer 4 directs communication to the proper destination network
• Layer 4 addresses are used by intermediary devices to forward data

10. Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?
• All three networks use CSMA/CA
• None of the networks require media access control.
• Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.
• Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.
• Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.

11. Refer to the exhibit. How many unique CRC calculations will take place as traffic routes from the PC to the laptop?
• 1
• 2
• 4
• 8

12. Refer to the exhibit. A frame is being sent from the PC to the laptop. Which source MAC and IP addresses will be included in the frame as it leaves RouterB? (Choose two.)
• source MAC — PC
• source MAC — S0/0 on RouterA
• source MAC — Fa0/1 on RouterB
• source IP — PC
• source IP — S0/0 on RouterA
• source IP — Fa0/1 of RouterB

13. Which sublayer of the data link layer prepares a signal to be transmitted at the physical layer?
• LLC
• MAC
• HDLC
• NIC

14. What two facts are true when a device is moved from one network or subnet to another? (Choose two.)
The Layer 2 address must be reassigned.
• The default gateway address should not be changed.
• The device will still operate at the same Layer 2 address.
• Applications and services will need additional port numbers assigned.
• The Layer 3 address must be reassigned to allow communications to the new network.

15. What is a function of the data link layer?
• provides the formatting of data
• provides end-to-end delivery of data between hosts
• provides delivery of data between two applications
• provides for the exchange data over a common local media

16. What is a characteristic of a logical point-to-point topology?
The nodes are physically connected.
The physical arrangement of the nodes is restricted.
• The media access control protocol can be very simple.
The data link layer protocol used over the link requires a large frame header.

17. What is a primary purpose of encapsulating packets into frames?
• provide routes across the internetwork
• format the data for presentation to the user
• facilitate the entry and exit of data on media
• identify the services to which transported data is associated

18. What is the primary purpose of the trailer in a data link layer frame?
• define the logical topology
• provide media access control
• support frame error detection
• carry routing information for the frame

19. What are three characteristics of valid Ethernet Layer 2 addresses? (Choose three.)
• They are 48 binary bits in length.
• They are considered physical addresses.
• They are generally represented in hexadecimal format.
• They consist of four eight-bit octets of binary numbers.
• They are used to determine the data path through the network.
• They must be changed when an Ethernet device is added or moved within the network.

CCNA CISCO ANSWERS

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 1)

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 2)

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 3)

1 . How many bits make up an IPv4 address?

128

64

48

32  **

2 .

Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?

255.255.255.248

255.255.255.224

255.255.255.192

255.255.255.240

255.255.255.128

255.255.255.252

3 .

Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the  router  interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server’s properties to allow connectivity to the network?

IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.39

IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.33

IP address: 192.168.10.38 subnet mask: 255.255.255.248 default gateway: 192.168.10.33

IP address: 192.168.10.39 subnet mask: 255.255.255.248 default gateway: 192.168.10.31

IP address: 192.168.10.254 subnet mask: 255.255.255.0 default gateway: 192.168.10.1

4 .

Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic.

/24

/16

/20

/27

/25

/28

5 .

Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?

The router has an incorrect gateway.

Host A has an overlapping network address.

Host A has an incorrect default gateway configured.

Host A has an incorrect subnet mask.

NAT is required for the host A network.

6 . What subnet mask would a network administrator assign to a network address of 172.30.1.0 if it were possible to have up to 254 hosts?

255.255.0.0

255.255.255.0

255.255.254.0

255.255.248.0

7 . Given the IP address and subnet mask of 172.16.134.64 255.255.255.224, which of the following would describe this address?

This is a useable host address.

This is a broadcast address.

This is a network address.

This is not a valid address.

8 . What three facts are true about the network portion of an IPv4 address? (Choose three.)

identifies an individual device

is identical for all hosts in a broadcast domain

is altered as packet is forwarded

varies in length

is used to forward packets

uses flat addressing

9 . What is the network address of the host 172.25.67.99 /23 in binary?

10101100. 00011001.01000011.00000000

10101100. 00011001.01000011.11111111

10101100. 00011001.01000010.00000000

10101100. 00011001.01000010.01100011

10101100. 00010001.01000011. 01100010

10101100. 00011001.00000000.00000000

10 . A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?

172.16.0.0

172.16.192.0

172.16.192.128

172.16.192.160

172.16.192.168

172.16.192.176

11 .

Refer to the exhibit. Why would the response shown be displayed after issuing the command ping 127.0.0.1 on a PC?

The IP settings are not properly configured on the host.

Internet Protocol is not properly installed on the host.

There is a problem at the physical or data link layer.

The default gateway device is not operating.

A router on the path to the destination host has gone down.

12 . What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)

The router will discard the packet.

The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.

The router will send a time exceeded message to the source host.

The router will increment the TTL value and forward the packet to the next router on the path to the destination host.

The router will send an ICMP Redirect Message to the source host.

13 . Which of the following are features of IPv6? (Choose three.)

larger address space

faster routing protocols

data types and classes of service

authentication and encryption

improved host naming conventions

same addressing scheme as IPv4

14 . Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?

binary adding

hexadecimal anding

binary division

binary multiplication

binary ANDing

15 . What is the primary reason for development of IPv6?

security

header format simplification

expanded addressing capabilities

addressing simplification

16 . Which three IP addresses are private? (Choose three.)

172.168.33.1

10.35.66.70

192.168.99.5

172.18.88.90

192.33.55.89

172.35.16.5

17 . Which statements are true regarding IP addressing? (Choose two.)

NAT translates public addresses to private addresses destined for the Internet.

Only one company is allowed to use a specific private network address space.

Private addresses are blocked from public Internet by router.

Network 172.32.0.0 is part of the private address space.

IP address 127.0.0.1 can be used for a host to direct traffic to itself.

18 . Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)

172.16.4.127 /26

172.16.4.155 /26

172.16.4.193 /26

172.16.4.95 /27

172.16.4.159 /27

172.16.4.207 /27

19 . What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?

an internet

a network

an octet

a radi

20 .

Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?

The host subnet mask is incorrect.

The default gateway is a network address.

The default gateway is a broadcast address.

The default gateway is on a different subnet from the host.

21 . Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)

LAN workstations

servers **

network printers **

routers **

remote workstations

laptops

 CCNA CISCO ANSWERS

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 1)

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 2)

CCNA Exploration 1 : Network Fundamentals (Version 4.0) (Chapter 3)