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Cisco 640-821 Exam Syllabus Topics:

Cisco Introduction to Cisco Networking Technologies Sample Questions:

Question 1

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

A. 10.168.10.99
B. B2:B2:B2:B2:B2:B2
C. C3:C3:C3:C3:C3:C3
D. 10.168.11.88
E. D4:D4:D4:D4:D4:D4
F. A1:A1:A1:A1:A1:A1

Question 2

DRAG DROP
drag drop

Question 3

Refer to the output of the three router commands shown in the exhibit.A new technician has been told to add a new LAN to the company router. Why has the technician received the error message that is shown following the last command?

A. The interface was already configured.
B. The interface type does not exist on this router platform.
C. The command was entered from the wrong prompt.
D. The IOS software loaded on the router is outdated.
E. The router does not support LAN interfaces that use Ethernet.

Question 4

What is the purpose of flow control?

A. to reassemble segments in the correct order at the destination device
B. to ensure data is retransmitted if an acknowledgment is not received
C. to provide a means for the receiver to govern the amount of data sent by the sender
D. to regulate the size of each segment

Question 5

Refer to the exhibit. SwitchA receives the frame with the addressing shown in the exhibit.
According to the command output also shown in the exhibit, how will SwitchA handle this frame?

A. It will forward the frame out port Fa0/6 only.
B. It will flood the frame out all ports.
C. It will drop the frame.
D. It will flood the frame out all ports except Fa0/3.
E. It will forward the frame out port Fa0/3 only.

Solutions: