CCNA Intro Cert Prac Exam #2

Kunci Jawaban: CCNA2 Intro Cert Prac Exam #2

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1
Which command can be used to verify application layer connectivity between source and destination?

ping
***    Telnet
tracert
show ip route

2
Refer to the exhibit. A network administrator can successfully ping, using IP addresses, between router Jax and router Atlanta. However, when the command telnet Atlanta is entered from the Jax router, the Telnet connection fails. Which two reasons could be the cause of the failure? (Choose two.)

The Jax router is not an entry in the host table of the Atlanta router.
***    The Jax router does not have an entry for Atlanta in its host table.
The hostname command is not configured correctly on the Atlanta router.
The hostname command is not configured correctly on the Jax router.
***    Access to a DNS server is not available.

3
Refer to the exhibit. What would be a valid network address for the new subnet on RTA?

***    10.16.10.16/28
10.16.10.24/28
10.16.10.30/28
10.16.10.56/28
10.16.10.72/28

4
It is necessary that there be an easy way for routers deployed by customers to access their ISP router by name. The name of the ISP router is NewYork_HQ with an IP address 172.16.1.1. What command should be executed on the customer’s router to allow access to the ISP by name?

customer(config)# ip route 172.16.1.1 NewYork_HQ
customer(config)# ip 172.16.1.1 host NewYork_HQ
***    customer(config)# ip host NewYork_HQ 172.16.1.1
customer(config)# ip NewYork_HQ host 172.16.1.1

5
ABC company needs to connect its router to an ISP to access the Internet. What device is needed to connect the router to the ISP if the ISP supplies a T1 leased line for the connection?

***    CSU/DSU
modem
DSL router
NT1 device
ISDN modem

6
Refer to the exhibit. What is the broadcast address for the subnetwork on which host A resides?

10.255.255.255
10.144.255.255
10.149.255.255
10.149.191.255
***    10.159.255.255

7

Refer to the exhibit. How many collision domains are pictured?

1
2
3
5
***    6
7

8
Which output represents a properly connected and configured router interface?

*** prve

9
Which three statements characterize UDP? (Choose three.)

***    UDP provides connectionless, fast transmission of data at Layer 4.
UDP provides connection-oriented, fast transmission of data at Layer 3.
***    UDP relies on application layer protocols for error detection.
***    UDP works well when an application does not need to guarantee delivery of data.
UDP relies on IP for error detection and recovery.
UDP provides windowing and flow control.

10
In what order must the configuration tasks be completed to configure an IP address on an interface on a router when starting from the console prompt of “router#”?

A) Enable the interface.
B) Enter interface mode.
C) Enter global configuration mode.
D) Specify the interface address and subnet mask.

A, B, C, D
A, C, B, D
C, A, B, D
***    C, B, D, A
B, C, D, A
B, D, C, A

11

Refer to the exhibit. If all the switches have a default configuration, how many broadcast domains are in the network?

1
***    2
3
4
5
14

12
Which set of commands is used to name a router and save the configuration?

Router(config)# hostname South
South(config)# copy running-config startup-config
***    Router(config)# hostname South
South(config)# exit
South# copy running-config startup-config
Router(config)# ip host South
South(config)# copy running-config startup-config
Router(config)# ip host South
South(config)# exit
South# copy running-config startup-config

13
Why is it important for the router to maintain an accurate routing table?

to provide Layer 2 addressing information for the next hop
to prevent broadcasts from occurring on the LAN
***    to determine the best path for data
to identify all of the routers in a network

14

Refer to the exhibit. A senior engineer has entered the command show run on a Cisco 2600 series router. What can be concluded about the router output? (Choose three).

The enable password has been encrypted.
***    The service password-encryption is not configured on this router.
***    The enable secret is using MD5 to encrypt the password.
The password to access privileged mode on the router is sys#op.
***    The passwords shown are not required to establish a Telnet session to this router.

15
Which command is used with an encrypted password to restrict access to the privileged EXEC mode of a Cisco router?

RouterA(config)# password encrypted cisco
RouterA(config)# config password encrypted cisco
RouterA(config)# enable password cisco
***    RouterA(config)# enable secret cisco
RouterA(config)# service-password encryption cisco

16

Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?

RouterB(config)# enable secret class
RouterB(config)# line vty 0 4
RouterB(config-if)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0 2
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
***    RouterB(config)# enable secret class
RouterB(config)# line vty 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-vty)# password cisco
RouterB(config-vty)# login

17
A critical network must be designed for constant connectivity. The chosen topology must allow the network to continue to function even when several links are broken. Which type of topology will best meet this requirement?

bus
hierarchical
ring
***    mesh

18
Which of the following can be modified by the system administrator to determine from where the Cisco IOS loads? (Choose two.)

system ROM
***    startup configuration file
system image file
***    configuration register
bootloader image file

19

Refer to the exhibit. Workstation A sends an IP packet to workstation B. What changes occur to the encapsulation of the packet during data transfer? (Choose two.)

***    The Layer 2 header is stripped from the packet by each router.
The destination Layer 2 address of the packet does not change.
The source Layer 3 address of the packet changes for each router.
***    The source Layer 2 address changes for each router.
The Layer 3 header is stripped from the packet by each router.

20

Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.)

***    1
2
3
***    4
5
6

21

Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?

create a Layer 1 jam signal
resend all the data
send a RESET bit to the host
***    change the window size in the Layer 4 header

22
To which subnetwork would a host belong given an IP address of 160.16.240.69 /27?

160.0.0.64
160.16.0.64
160.16.64.64
***    160.16.240.64
160.16.255.64

23
What type of problem would the accompanying output indicate? (Choose two.)

Serial0/0 is up, line protocol is down

***    clockrate problem
physical connection problem
carrier problem
***    Layer 2 problem
Layer 1 problem

24
A network administrator views the configuration register setting in a router and determines it is set to 0x2100. What will the end result be when the router reloads?

The system boots the first image in flash.
The system examines NVRAM for boot system commands.
The system loads a limited IOS located in ROM.
***    The system enters ROM monitor mode and waits for user intervention.

25
From a CLI session, what key sequence can be used to escape the traceroute command?

Ctrl-Alt-Esc
Ctrl-Shift-6
Ctrl-Del
Ctrl-Z
***    Ctrl-C

26
What are two requirements to establish a console communication session between a computer and a router? (Choose two.)

A console cable must be used from the console port of the router to the NIC of the computer.
***    A rollover cable must be used from the console port of the router to the serial port of the computer.
A default gateway must be configured on the computer.
The IP addresses assigned to the router and computer must be on the same subnetwork.
***    There must be a terminal emulator application on the computer.

27

Refer to the exhibit. Four hosts are being added to the 172.16.112.0 network. Which IP address is invalid as a host address for this network?

172.16.113.55
172.16.112.255
***    172.16.127.255
172.16.112.89
172.16.120.96

28
Which two statements correctly describe the components of a router? (Choose two.)

RAM permanently stores the configuration file used during the boot sequence.
***    ROM contains diagnostics executed on hardware modules.
NVRAM stores a backup copy of the IOS used during the boot sequence.
***    Flash memory does not lose its contents during a reboot.
ROM contains the most current and most complete version of the IOS.
Flash contains boot system commands to identify the location of the IOS.

29

Refer to the exhibit. While troubleshooting a connectivity problem, a technician issues the show cdp neighbors command on the SwMain switch. Select the option that contains the correct line output from this command.

*** druhe
30
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.
***    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.
***    All of the devices on a segment see data that passes on the network medium.
***    After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

31

Refer to the exhibit. The router named myhome has received a frame from the host 192.168.254.7. The contents of this frame are being sent to host 172.16.14.243. What is the Layer 2 destination address of the frame as it leaves the myhome router?

***    0008.a3b6.ce05
0009.1281.18a8
000a.8a47.e612
172.16.14.129
172.16.14.243
192.168.254.7

32
Which statements are true about TCP operation? (Choose three.)

uses the destination port field to identify remote host
***    uses positive acknowledgments to confirm data delivery
***    uses windowing to control data flow
uses sequence numbers to establish transmission priority
***    uses the senders’ source port number to respond to data requested
uses the SYN flag to terminate session

33
The router receives a packet with the destination address of 172.16.30.79/22. To which subnetwork does this packet belong?

172.16.30.0/22
172.16.30.64/22
172.16.30.76/22
***    172.16.28.0/22
172.16.28.56/22
172.16.0.0/22

34

Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?

DD:DD:DD:DD:DD:DD
172.168.10.99
CC:CC:CC:CC:CC:CC
172.168.10.65
***    BB:BB:BB:BB:BB:BB
AA:AA:AA:AA:AA:AA

35

Refer to the exhibit. A switch with a default configuration connects four hosts. The ARP table for the 10.55.5.8 host is shown. What happens when the host assigned the IP address of 10.55.5.8 wants to send an IP packet to the host with the address of 10.55.5.11?

The 10.55.5.11 host sends out a RARP request to the 10.55.5.8 host.
The 10.55.5.11 host responds with an ARP request to the 10.55.5.8 host.
The 10.55.5.8 host sends out the packet to the switch. The switch sends the packet only to the 10.55.5.11 host, which in turn responds.
The 10.55.5.8 host sends out a broadcast of 255.255.255.255. Every other host connected to the switch receives the broadcast and the 10.55.5.11 host responds with its MAC address.
***    The 10.55.5.8 host sends out a broadcast of FF:FF:FF:FF:FF:FF. Every other host connected to the switch receives the broadcast and the 10.55.5.11 host responds with its MAC address.

36

Refer to the exhibit. Host A sends a data packet to Host B. What will be the correct frame format when host B receives the data packet?

*** prve

37
When would UDP be the preferred transport protocol over TCP? (Choose two.)

when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated
***    when a faster delivery mechanism is needed
when delivery overhead is not an issue
***    when applications do not need to guarantee delivery of the data
when destination port numbers are dynamic

38

What type of cable is used for connectivity between a model 2620 router and a model 2950 switch (point A), a model 2950 switch and a model 1900 switch (point B), and a model 2950 switch and a host (point C)?

A – straight-through; B – rollover; C – straight-through
A – crossover; B – straight-through; C – straight-through
A – straight-through; B – straight-through; C – crossover
A – crossover; B – straight-through; C – crossover
***    A – straight-through; B – crossover; C – straight-through
A – straight-through; B – crossover; C – crossover

39
Which router component holds the routing table, ARP cache, and fast-switching cache?

***    DRAM
Flash
NVRAM
ROM

40
What are three valid host addresses given a subnet mask of 255.255.254.0? (Choose three.)

***    27.15.2.255
172.55.33.255
***    55.16.129.0
***    190.187.162.255
77.165.55.255
145.59.62.0

41

Refer to the exhibit. The network shown is using classful subnetting. The serial link between routers A and B is configured with addresses from the 172.16.6.0/23 subnet. How many valid IP addresses are wasted on this subnetwork?

252
254
256
***    508
510
512

42
What is the purpose of the sequence numbers in a TCP segment? (Choose two.)

***    to identify missing segments at the destination
***    to reassemble the segments at the remote location
to identify the order for the segments to travel to the destination
to limit the number of segments that can be sent at one time on an interface
to determine if the packet changed during transit

43
A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?

STP
***    UTP
coaxial
single-mode fiber
multimode fiber

3 Responses to “CCNA Intro Cert Prac Exam #2”

  1. Wirahma Says:

    You’re bad-GOOD guys !!!
    Thx a lot but very much !

  2. el final ccna 3 v4.0 es de 50

  3. answer to question 25 is wrong.

    It is Ctrl-Shift-6

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