Cisco 640-821 : Introduction to Cisco Networking Technologies

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Cisco 640-821 Exam Syllabus Topics:

Cisco Introduction to Cisco Networking Technologies Sample Questions:

Question #1
An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator has entered the command shown in the exhibit. Based on the output shown, what could be the problem?

A. The serial interface does not have a cable attached.
B. The serial interface has the wrong type of cable attached.
C. The serial interface is configured for the wrong frame size.
D. The serial interface is configured for half duplex.
E. The serial interface has a full buffer.

Question #2
How does a switch differ from a hub?

A. A switch tracks MAC addresses of directly-connected devices.
B. A switch decreases the number of broadcast domains.
C. A switch decreases the number of collision domains.
D. A switch does not induce any latency into the frame transfer time.
E. A switch operates at a lower, more efficient layer of the OSI model.

Question #3
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Question #4
After the shutdown command has been issued on the serial 0/0 interface, what will be displayed when the show interface serial 0/0 command is issued by the administrator?

A. Serial0/0 is up, line protocol is up
B. Serial0/0 is administratively down, line protocol is down
C. Serial0/0 is down, line protocol is up
D. Serial0/0 is up, line protocol is down
E. Serial0/0 is administratively down, line protocol is administratively down
F. Serial0/0 is down, line protocol is down

Question #5
Which statements are true regarding ICMP packets? (Choose two.)

A. They can provide hosts with information about network problems.
B. They guarantee datagram delivery.
C. They acknowledge receipt of TCP segments.
D. They are encapsulated within UDP datagrams.
E. They are encapsulated within IP datagrams.

Solutions: