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Comp 222:Telecommunications And Computers November 2010 Question Paper

Comp 222:Telecommunications And Computers November 2010

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2010

KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2010/2011 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF EDUCATION SCIENCE

COURSE CODE: COMP 222

INSTRUCTIONS:
Attempt Question ONE and Any other TWO

QUESTION ONE: (30 marks)

a) Explain the criteria used in network selection [ 6 marks]

b) Describe the following using a suitable diagrams
(i) Simplex
(ii) Half duplex
(iii) Full duplex [6 marks]
c) Explain the roles of them following layers in a network
(i) Physical layer [3 marks]

(ii) Data link layer [3 marks]
d) What is a protocol? Describe its key elements [5 marks]

e) Describe analog and digital signals using suitable diagrams [ 6 marks]

f) Describe Metropolitan Area Network [1 mark]

QUESTION TWO ( 20 marks)

a) Describe five communication components [5 marks]

b) Describe serial data transmission [4 marks]

c) What is sampling? Why is it done? [4 marks]

d) Describe line coding [4 marks]

e) State and explain advantages of a network [3 marks]

QUESTION THREE ( 20 marks)

a) Describe network connections type’s available [4 marks]

b) Describe Manchester coding system [4 marks]

c) Describe the following
(i) Mesh topology
(ii) Star topology
(iii) Ring topology [6 marks]
d) Briefly describe the functions of the transport layer in the OSI model. [4 marks]

e) Differ rate between Bit interval and Bit Rate types [2 marks]

QUESTION FOUR ( 20 marks)

a) Describe the following guided media
(i) Twisted pair cable
(ii) Coaxial cable
(iii) Fiber optic [ 6 marks]
b) Explain the following terms
i) Phase
ii) Bandwidth [6 marks]

c) Describe devices used in wireless transmission [6 marks]

d) Describe WAN network [2 marks]

Comp 222:Telecommunications And Computers November 2010 Question Paper

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