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Cisy 437:Network Performance And Optimization Question Paper

Cisy 437:Network Performance And Optimization

Course:Computer Information Systems

Institution: Kenya Methodist University question papers

Exam Year:2013

KENYA METHODIST UNIVERSITY

END OF 2ND TRIMESTER 2013 EXAMINATION

FACULTY : COMPUTING & INFORMATICS
DEPARTMENT : CIS & BI
UNIT CODE : CISY 437
UNIT TITLE : NETWORK PERFORMANCE AND OPTIMIZATION
TIME : 2 HOURS

Instructions:
• Attempt question one and any other two questions
Question One
(a) .
i. Distinguish between packet switching and circuit switching architectures. (4 marks)
ii. Describe the two main windows tools/models used in network measure and analysis and explain where each can be used. (8 marks)
(b) Describe the seven layers of open system interconnection models.
(14 marks)
(c) Explain any four ethical issues in use of internet. (4 marks)

Question Two
(a) Describe any five internet immerging technologies. (10 marks)
(b) Discuss the three impediments in use of passive network measuring tools. (6 marks)
(c) Explain the “hand shaking” concept as used in networking. (4 marks)

Question Three
(a) Explain any five main issues in use of internet. (10 marks)
(b) .
i. Describe the internet queiuing model and explain when it can be used. (3 marks)
ii. Explain the little’s law theorem. (4 marks)
iii. Calculate the mean number of packets buffered in the router given the following data.
Packets rate = 200K
Router reaction time = 200ms (3 marks)

Question Four
(a) Explain any five sources of jitter. (10 marks)
(b) Discuss the following
i. Three types of jitters (6 marks)
ii. Two main components of jitters. (4 marks)

Question Five
(a) Describe two types of computer networks in each of the following categories
i. Geographical coverage
ii. Types of communication path
iii. Transmission technology. (12 marks)
(b) Explain the advantages of using traffic measure in determining performance of a network. (8 marks)

Cisy 437:Network Performance And Optimization Question Paper

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