Longest Prefix Matching
Consider a datagram network using 8-bit host addresses.
Suppose a router uses longest-prefix matching, and has the following forwarding table:
Question List
1. Suppose a datagram arrives at the router, with destination address 11101010. To which interface will this datagram be forwarded using longest-prefix matching?
2. Suppose a datagram arrives at the router, with destination address 10000000. To which interface will this datagram be forwarded using longest-prefix matching?
3. Suppose a datagram arrives at the router, with destination address 10100101. To which interface will this datagram be forwarded using longest-prefix matching?
Solution
1. Since the address is 11101010, it will go to interface 6.
2. Since the address is 10000000, it will go to interface 1.
3. Since the address is 10100101, it will go to interface 3.
That's incorrect
That's correct
The answer was: 6
The answer was: 1
The answer was: 3