Question: 1. Briefly explain the following terms and concepts: a. Maximum Transfer Size (MTU) b. Longest Prefix Matching c. CIDR and Subnet Mask d. Switching Fabric

1. Briefly explain the following terms and concepts:

a. Maximum Transfer Size (MTU)

b. Longest Prefix Matching

c. CIDR and Subnet Mask

d. Switching Fabric

e. Difference between forwarding and routing

2. Considering the following figure as a schematic view of some parts of a network. Also, assume that the datagram X of size 5,000 bytes has just arrived at router C with the destination IP of 116.24.123.324.

1. Briefly explain the following terms and concepts: a. Maximum Transfer Size

a. Assuming that router C forwards X to router B and the following table summarizes the forwarding table of router B, at which link interface, X (or its fragments) is (are) forwarded by router B? Why?

Destination Address	Link Interface
116.23.8.0/21	O1
116.24.96.0/19	O2
116.24.64.0/18	O3
otherwise	O1

b. Assuming that router C forwards X to router B and router B decides to forward the datagram toward router A, explain how X is is fragmented at router B before getting forwarded. Also, specify the length of each fragment assuming that IP header is 20 bytes long.

02: 116.23.15.131 16.23.12.11 116.23 MTU = 5KB 01:1(623.14.151

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