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Cisy 434:Telecommunication Networks 11 Question Paper

Cisy 434:Telecommunication Networks 11

Course:Computer Science

Institution: Kenya Methodist University question papers

Exam Year:2010

FACULTY : SCIENCE AND TECHNOLOY

DEPARTMENT : CIS AND BIT

TIME : 2 HOURS

INSTRUCTIONS Answer Question ONE in Section A and ANY Other TWO Questions in Section B

SECTION A

Question 1

a) Explain the following terminologies as used in telecommunication.

i) Circuit switching (2Marks)

ii) Trunk (2Marks)

iii) Switch (2Marks)

b) Differentiate between a de facto standard and a de jure standard. (4Marks)

c) Give any three advantages of wireless networks (3Marks)

d) State any two disadvantages of wireless communication. (2Marks)

e) Describe the three phases of a circuit switched network. (3Marks)

f) Explain the four main areas of the network management function. (4Marks)

g) Describe three factors that make the traditional approach to network design inappropriate for modern networks. (3Marks)

h) Distinguish between Direct Sequence Spread Spectrum(DSSS) and Frequency Hopping Spread Spectrum (FHSS) as spread spectrum techniques. (5Marks)

SECTION B

Question 2

a) Explain the following two main switching techniques. (4Marks)

i) Time Division

ii) Space Division

b) Given a 150 x 150 switch:

i) Calculate the number of cross-points if the switch is a crossbar (2Marks)

ii) Given a three stage multi-switch with each crossbar having 30 input lines in the first stage and three crossbar switches in the middle stage, Calculate the total number of cross-points in this multi-stage switch. (6Marks)

c) Explain any four characteristics of a virtual circuit network. (8Marks)

Question 3

a) State any four functions of a network manager. (4Marks)

b) i) Distinguish between fault management and performance management. (2Marks)

ii) Describe four types of failure metrics. (8Marks)

c) Explain three factors that comprise the Total Cost of Ownership (TCO) of a single computer within a network. (6Marks)

Question 4

a) Describe four services that can be offered by Advanced Intelligent Networks (AIN). (8Marks)

b) As the networks converge, leading to a unification of different networks and services, several challenges arise due to the complexity resulting from this convergence. Discuss any four of the challenges. (8Marks)

c) State four broad objectives of the 3G wireless networks. (4Marks)

Cisy 434:Telecommunication Networks 11 Question Paper

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