(2 points) Consider a datagram network using 32-bit host addresses. Suppose a ro

Question

(2 points) Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows:

Prefix Match

Link Interface

11100000 000

11100000 00100000

11100000 0011

11100000 00110001 10

Describe how your forwarding table determines the appropriate link interface for datagrams with destination addresses:

11000000 00110001 01010001 01010101

11100001 00100000 00010001 01110111

Prefix Match

Link Interface

11100000 000

11100000 00100000

11100000 0011

11100000 00110001 10

Explanation / Answer

Prefix match for first address is 3rd entry: link interface 2

Prefix match for second address is 5th entry: link interface 3

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Destination Address Prefix Match Link Interface 11000000 00110001 01010001 01010101 11100000 2 11100001 00100000 00010001 01110111 otherwise 3

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