CCNA And CCENT Cisco Certification Exam Training Questions –10 Questions On HDLC, PPP, And Point-To-Point Connections

Posted on August 26, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam | Tags: , , , |


Exam Source

Reference Post

Video Explanation

 

1. Identify the correct statements regarding HDLC and PPP running on a point-to-point connection.

A. If HDLC is running on one end, HDLC must be running on the other end as well.

B. If HDLC is running on one end, the other end can run HDLC or PPP.

C. If PPP is running on one end, PPP must be running on the other end as well.

D. If PPP is running on one end, the other end can run HDLC or PPP.

2. If a point-to-point connection is physically fine but there is a timer or encapsulation mismatch issue, which of the following will appear in the output of show interface serial?

A. Serial0 is up, line protocol is up

B. Serial0 is up, line protocol is down

C. Serial0 is down, line protocol is up

D. Serial0 is down, line protocol is down

3. Which of the following cannot appear in the output ofshow interface serial?

A. Serial0 is up, line protocol is up

B. Serial0 is up, line protocol is down

C. Serial0 is down, line protocol is up

D. Serial0 is down, line protocol is down

4. Which of the following is offered by PPP but not by HDLC?

A. PAP

B. multilink capabilities

C. dialer callback

D. CHAP

5. Name both debug commands that could produce the following output.

2d04h: Se1 CHAP: O CHALLENGE id 82 len 23 from “R3”
2d04h: Se1 CHAP: I CHALLENGE id 222 len 23 from “R1”
2d04h: Se1 CHAP: O RESPONSE id 222 len 23 from “R3”
2d04h: Se1 CHAP: I RESPONSE id 82 len 23 from “R1”
2d04h: Se1 CHAP: O SUCCESS id 82 len 4
2d04h: Se1 CHAP: I SUCCESS id 222 len 4

“debug ppp negotiation” and “debug ppp authentication”.

The debug ppp negotiation command will give more information.

6. What is the net result of the following command?

R3(config-if)#ppp authentication chap pap

A. CHAP authentication will be attempted before PAP.

B. CHAP and PAP authentication attempts will be made at the same time.

C. If the CHAP authentication attempt results in a failed authentication, a PAP attempt will be made.

D. If the remote router isn’t running CHAP, a PAP authentication attempt will be made.

E. The password for CHAP authentication has been set to “pap”.

7. What protocol is sometimes referred to as the manager of a PPP connection?

Link Control Protocol (LCP)

 

8. PPP allows you to select one of two compression techniques. What are they?

stacker or predictor

9. Identify the true statements.

A. PAP sends a clear-text password across the WAN.

B. PAP sends a hash result across the WAN rather than a password.

C. CHAP sends a clear-text password across the WAN.

D. CHAP sends a hash result across the WAN rather than a password.

10. What is the default encapsulation for a Cisco router serial interface?

HDLC

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