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Dit 402: Fundamentals Of Computer Networks Question Paper

Dit 402: Fundamentals Of Computer Networks

Course:Diploma In Information Technology

Institution: Kca University question papers

Exam Year:2012

INSTRUCTIONS:
1. Answer Any THREE Questions.
2. All Questions Carry EQUAL Marks.
3. Time Allowed is 1hr 30mins.

Question One
a) Define the following networking terms: [5 marks]
i. Computer network
ii. Protocol
iii. Bandwidth
iv. Point to point network
v. Half duplex transmission

b) State factors that necessitate a computer network. [4 marks]

c) List two types of routing algorithms. [2 marks]

d) List and explain four characteristics of a LAN. [4 marks]

e) Explain the difference between the following terms as used in networking:
i. Intranet and internet [2 marks]
ii. Client server and peer to peer network [2 marks]

f) State your understanding of a physical address. [1 mark]

Question Two
a) List four examples of specialized servers. [2 marks]

b) State four advantages of using a fibre optic over a STP cable. [2 marks]

c) Describe two categories of Congestion Control Solution. [4 marks]

d) A network consists of devices that must share the networks transmission capacity. Some means of controlling access to the transmission medium is required. Explain the following medium access methods: [4 marks]
i. Token passing
ii. CSMA/CA

e) Explain performance measures of routing algorithms [4 marks]

f) Describe data link sub layers of the OSI: [4 marks]
i. MAC
ii. Logical Link Control (LLC)

Question Three
a) Discuss the following routing algorithms: [12 marks]
i. Flooding
ii. Distance-vector routing
iii. Link state routing

b) Explain the optimality principle. [2 marks]

c) Congestion occurs when a router receives data faster than it can send it. State factors that may lead to this situation. [4 marks]

d) Briefly explain the term ATM network. [2 marks]

Question Four
a) Explain the difference between flow control and congestion control. [4 marks]

b) Switches can be designed to forward frames in one of two ways. List and explain the two ways. [4 marks]

c) Discuss the TCP/IP protocol suite. [5 marks]

d) List two examples of network operating system. [1 mark]

e) Explain the following terms as used in congestion control: [6 marks]
i. Warning bits
ii. Choke packets
iii. Random Early Discard (RED)

Question Five
a) State factors to be considered when selecting a transmission medium. [4 marks]

b) Discuss the following switching techniques stating their advantages and disadvantages: [8 marks]
i. Packet switching
ii. Circuit switching

c) Compare and contrast the OSI and TCP/IP [4 marks]

d) Explain the following network protocols: [4 marks]
i. HTTP
ii. UDP
iii. TCP
iv. DNS
v. SMTP

Dit 402: Fundamentals Of Computer Networks Question Paper

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