DATA and Communications Networks

Please provide your answers to the following questions:

Question 1.

a. Construct a table that will compare each of the following network devices. You should have columns for function, network layer, address type, address length duplex, collision domain, and broadcast domain. You will be expected to put a few words against each entry. (20 Marks)

a. NIC (Network Interface Card)

b. Hub

c. Switch

d. Router

b. Explain why twisting improves the performance of network cabling (100 words). (5 Marks)

c. Explain how network data is sent over an optical fiber cable and why the light stays within the cable. List the four main benefits of optical cable, when compared with metallic cable (100 words). (9 Marks)

2	Assignment 01 – Data & Comms Networks – Spring 2015

Question 2.

a. Contrast routers and switches by explaining how each learn about the networks that they are connected to. You should include relevant factors about layers, protocols, types of addresses and tables (500 words) (24 marks)

b. Explain how a host A is able to send a packet to a host B that belongs to a different subnet 1 hop away. Your explanation should include a table showing any addresses   contained in packets or frames at switches and routers. (12 marks)