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CCNA 4 Chapter 3 v5.0 Exam Answers 2014

by OTHMAN OMER OTHMAN ALAMODI , at 9:01 PM , have 0 comments
1.

Which address is used in the Address field of a PPP frame?

a single byte of binary 10101010

a single byte of binary 11111111*


the IP address of the serial interface


a single byte of binary 00000000

2

How does PPP interface with different network layer protocols?

by specifying the protocol during link establishment through LCP


by encoding the information field in the PPP frame

by using separate NCPs*


by negotiating with the network layer handler

3



Place the options in the following order:

Compression

Multilink

Maximum Receive Unit

– not scored –

Authentication Protocol

4

Which command can be used to view the cable type that is attached to a serial interface?

Router(config)# show controllers*


Router(config)# show ip interface


Router(config)# show interfaces


Router(config)# show ip interface brief

5

In which situation would the use of PAP be preferable to the use of CHAP?

when plain text passwords are needed to simulate login at the remote host*


when router resources are limited


when multilink PPP is used


when a network administrator prefers it because of ease of configuration

6

Which protocol will terminate the PPP link after the exchange of data is complete?

IPCP

LCP*


IPXCP


NCP

7



Refer to the exhibit. Which statement describes the status of the PPP connection?

Both the link-establishment and network-layer phase completed successfully.*


Only the network-layer phase completed successfully.


Only the link-establishment phase completed successfully.


Neither the link-establishment phase nor the network-layer phase completed successfully.

8

Which is an advantage of using PPP on a serial link instead of HDLC?

option for session establishment


higher speed transmission

option for authentication*


fixed-size frames

9

Which three statements are true about PPP? (Choose three.)

PPP can use synchronous and asynchronous circuits.*


PPP carries packets from several network layer protocols in LCPs.


PPP can only be used between two Cisco devices.

PPP uses LCPs to agree on format options such as authentication, compression, and error detection.*

PPP uses LCPs to establish, configure, and test the data link connection.*

10

When configuring Multilink PPP, where is the IP address for the multilink bundle configured?

on a subinterface


on a physical serial interface


on a physical Ethernet interface

on a multilink interface*

11

Which field marks the beginning and end of an HDLC frame?

FCS

Flag*


Control


Data

12



Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.

Both PAP and CHAP authentication were attempted.

A PPP session was successfully established.*


CHAP authentication failed because of an unknown hostname.


The debug output is from router R2.

13

During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)

Configure-Reject*


Code-Reject


Discard-Request

Configure-Nak*


Protocol-Reject

14

A network administrator is evaluating authentication protocols for a PPP link. Which three factors might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)

uses an unpredictable variable challenge value to prevent playback attacks*

uses a three-way authentication periodically during the session to reconfirm identities*

transmits login information in encrypted format*


control by the remote host of the frequency and timing of login events


establishes identities with a two-way handshake


makes authorized network administrator intervention a requirement to establish each session

15



Place the options in the following order:

Step 3

Step 2

Step 4

Step 1

– not scored –

Step 5

Step 6

16

What are three components of PPP? (Choose three.)

LCP*


multilink

NCP*


HDLC-like framing*



compression


authentication

17



Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?​

The passwords do not match.*


The usernames do not match.


The passwords should be longer than 8 characters.


The interface IP addresses are in different subnets.

18

Which PPP option can detect links that are in a looped-back condition?

Magic Number*


Callback


MRU


ACCM

19

Which three are types of LCP frames used with PPP? (Choose three.)

link-negotiation frames


link-acknowledgment frames

link-maintenance frames*

link-termination frames*

link-establishment frames*


link-control frames

20

At which layer of the OSI model does multiplexing take place?

Layer 3


Layer 4


Layer 2

Layer 1*

21



Place the options in the following order:

Phase 3

– not scored –

Phase 1

Phase 2

22

Which three physical layer interfaces support PPP? (Choose three.)

GigabitEthernet

asynchronous serial*

HSSI*


synchronous serial*



POTS


FastEthernet

23



Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Why is the serial link between router R1 and router R2 not operational?

The encapsulation in both routers does not match.


The passwords are different in both routers.

In each case the expected username is not the same as the remote router hostname.*


The authentication type is not the same in both routers.

24

Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?

Serial 0/0/0 is up, line protocol is down


Serial 0/0/0 is administratively down, line protocol is down


Serial 0/0/0 is up (disabled)


Serial 0/0/0 is up, line protocol is up

Serial 0/0/0 is down, line protocol is down*


Serial 0/0/0 is up (looped)
OTHMAN OMER OTHMAN ALAMODI
CCNA 4 Chapter 3 v5.0 Exam Answers 2014 - written by OTHMAN OMER OTHMAN ALAMODI , published at 9:01 PM, categorized as CCNA 4 V5 , CCNA 4 V5 Answers , CCNA V5 , Routing And Switching Connecting Networks V5 Answers . And have 0 comments
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