Instructions: Answer two questions: one from Section A and one from Section B. You should try not to substantially repeat what you say in one answer in what you say….
. Packet switching, in contrast to circuit switching has gradually grown to dominate data communication networks. i. State and describe two disadvantages of packet switched networks
a. The following are devices commonly used in setting up a network; shielded twisted pair (UTP)
cables, network interface card (NIC), hubs repeaters, bridges, switches, routers and access point.
Sketch a network diagram that makes use of all the devices. Briefly explain the function of each
and at what layer of the open systems interconnection (OSI) reference model each device
functions. (10 Marks)
b. Give an overview of the distance vector method of updating routing table information. In
particular explain using an example how information about a node failure propagates using this
algorithms. (6 Marks)
c. Describe the following terms as used in data flow control. (4 Marks)
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