Consider sending a 4000-byte datagram into a link that has an MTU of 500 bytes. Suppose the original datagram is…

1. Consider sending a 4000-byte datagram into a link that has an MTU of 500 bytes. Suppose the original  datagram is stamped with the identification number 526. How many fragments are generated? What are their characteristics? Please show work (Assume IPv4 is used so the IP header is 20 bytes in length)

 

2. A datagram network uses a 16-bit host addresses. Assume a router uses longest prefix matching and has the following forwarding table:

———————————————–

Prefix Match                Interface

———————————————–

1                                  0

11                                1

111                              2

 

 

Give the associated range of destination host addresses for each of the four interfaces and the number of addresses in the range. Please provide solution similar to the following 8-bit table:

 

8-bit

Prefix                   Min Number                      Max Number                    Range

1                             10000000 = 128              10111111 = 191             64 = 26

11                           11000000 = 192              11011111 = 224             32 = 25

111                        11100000 = 224              11111111 = 255             32 = 25

Otherwise             00000000 = 0                   01111111 = 127              128 = 27