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Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2016 Question Paper

Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2016

Course:Bachelor Of Business Information Technology

Institution: Kenya Methodist University question papers

Exam Year:2016

Telcommunication network (BBIT 242) (Cisy 231) 1st trimester 2016
KENYA METHODIST UNIVERSITY

END OF 1'st 'TRIMESTER 2016 (FT) EXAMINATION

SCHOOL : SCIENCE & TECHNOLOGY
DEPARTMENT : COMPUTING AND INFORMATION SCIENCE
UNIT CODE : BBIT 242/ CISY 231
UNIT TITLE : TELECOMMUNICATION NETWORK
TIME : 2 HOURS

INSTRUCTIONS

Answer all questions in SECTION A and ANY TWO questions in SECTION B
a. Differentiate between synchronous and asynchronous transmission, citing where each is used. (4 marks)

b. Differentiate between absolute bandwidth and effective bandwidth. (4 marks)

c. List two differences between analog transmission and digital transmission. (4 marks)

d. Describe four components found in the communication model. (4 marks)

e. Briefly describe three factors/items that cause transmission errors. (3 marks)

f. Differentiate between a single bit error and a burst error. (2 marks)

g. Describe predictive encoding and name one standard defined by (4 marks)

h. Which are the three techniques for switching messages through complex networks? (3 marks)

i. What is the advantage of multiplexing? (2 marks)
SECTION B: ANSWER ANY TWO QUESTIONS FROM THIS SECTION

QUESTION 2:

a. Differentiate between frequency division multiplexing and wavelength division multiplexing, defining what each term stands for. (6 marks)

b. Which type of modulation does ADSL use and why is it referred to as asymmetric? (3 marks)
c. List and describe the three elements of ADSL strategy. (6 marks)

d. Describe synchronous time division multiplexing and give an example of where it is used. (5 marks)
QUESTION 3:

a. Describe how message switching occurs, citing three advantages and three disadvantages of this technique. (10 marks)

b. Describe how message switching occurs, clearly demonstrating the difference between this technique and message switching above. (10 marks)
QUESTION 4:

a. Describe the following compression methods; you may also use examples to explain the method (you must, however, indicate what is happening in every step)

i. Huffman coding (8 marks)
ii. Run length encoding (6 marks)

b. Explain the following terms as relates to compression:
i. Spatial compression
ii. Temporal compression

Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2016 Question Paper

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