Monday, 3 December 2012

Please study the exhibit carefully. If host TestKingA sends an IP packet to host TestKingB, what will the source physical (MAC) address be in the frame when it reaches host TestKingB?

Exhibit:



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

Answer: F

Explanation:

When packets transfer from one host to another across a routed segment, the source IP
address always remains the same source IP address, and the source physical (MAC)
address will be the existing router's interface address. Similarly, the destination IP address
always remains the same and the destination physical (MAC) address is the destination
router's interface address.

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