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Telecommunication Networks (Bbit 242) (Cisy 231) 3Rd Trimester 2014 Question Paper

Telecommunication Networks (Bbit 242) (Cisy 231) 3Rd Trimester 2014

Course:Bachelor Of Business Information Technology

Institution: Kenya Methodist University question papers

Exam Year:2014

TELECOMMUNICATIONS NETWORKS (BBIT 242) (CISY 231) 3RD TRIMESTER 2014
KENYA METHODIST UNIVERSITY

END OF 3'rd 'TRIMESTER 2014 (PT) EXAMINATION

FACULTY : COMPUTING & INFORMATICS
DEPARTMENT : COMPUTER SCIENCE AND BUSINESS
INFORMATION
UNIT CODE : BBIT 242/CISY 231
UNIT TITLE : TELECOMMUNICATION NETWORKING
TIME : 2 HOURS

INSTRUCTIONS

Answer question one and any other two questions

Question One (compulsory)

Differentiate between synchronous and asynchronous transmission citing where each is used.
(4 marks)
Differentiate between absolute bandwidth and effective bandwidth.
(4 Marks)
List two differences between analog and digital transmission.
(4 marks)
Describe four components found in the communication model.
(4 Marks)
Briefly describe three factors/items that cause transmission errors.
(3 Marks)
Differentiate between a single bit error and a burst error.
(2 marks)
Describe predictive encoding and name one std defined by it.
(4 marks)
Which are the three techniques for switching messages through complex networks?
(3 marks)
What is the advantage of multiplexing?
(2 Marks)
Question Two

Differentiate between frequency division multiplexing and wavelength division multiplexing, defining what each term stands for.
(6 Marks)
Which type of modulation does ADSL and why is it referred to as asymmetric?
(3 Marks)
List and describe the three elements of ADSL strategy.
(6 Marks)
Describe synchronous time division multiplexing and give an example of where it is used.
(5 marks)
Question Three

Describe how message switching occurs, citing three advantages and three disadvantages of this technique.
(10 marks)
Describe how circuit switching occurs, clearly demonstrating the difference between this technique and message switching above.
(10 marks)
Question Four

Describe the following compression methods, citing an example for each method:-
Huffman coding
(8 Marks)
Run length encoding
(6 Marks)
Explain the following terms as relates to compression;
Spatial compression
(3 Marks)
Temporal
(3 Marks

Telecommunication Networks (Bbit 242) (Cisy 231) 3Rd Trimester 2014 Question Paper

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