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Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2015 Question Paper

Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2015

Course:Bachelor Of Business Information Technology

Institution: Kenya Methodist University question papers

Exam Year:2014

Telecommunication Networks (BBIT 242) (CISY 231) 1st trimester 2015
KENYA METHODIST UNIVERSITY

END OF 1'st 'TRIMESTER 2015 (PT) EXAMINATION

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

INSTRUCTIONS:

Answer question One and any other Two
Question One

Distinguish between the following.
(6 marks)
Parallel and serial transmission
Synchronous and Asynchronous transmission
Digital and analog
Describe the following terms
(4 marks)
Baud
Baud rate
Differentiate between parallel and serial transmission.
(4 marks|)
Describe any two modes in which data can be transmitted across a transmission media.
(4 marks)
Describe two international bodies that provide specifications for the data transmission.
(4 marks)
What is packet switching
(2 marks)
Outline any four advantages of packet switching technology
(4 marks)
Differentiate between Frequency Division Multiplexing FDM and Time Division Multiplexing TDM
(2 marks)
Question Two

Compare and contrast between switch and router in context of their operation and functionality.
(6 marks)
Describe the three switching techniques and outline the advantages and disadvantages of each.
(9 marks)
Describe the ATM technology.
(5 marks)
Question Three

When designing or updating a computer network, the selection of one type of media over another is an important issue. State and explain four principal factors to consider in your decision.
(4 marks)
Describe the X.25 protocol
(2 marks)
Distinguish between PSTN and PSDN technologies of data transmission.
(4 marks)
A medium access control protocol is part of the software that allows a workstation to place data onto a LAN. Depending on the network’s topology, several types of protocols may be applicable. Explain the operation of (CSMA/CD and Token Passing
(6 marks)
Compare the implications of using connection oriented communication with connectionless communication.
(4 marks)
Question Four

Describe the concept of Cyclic Redundancy Check CRC method of transmission error connection.
(4 marks)
State and explain the three methods of error control used with data communications.
(6 marks)

Data communication can be transmitted on a number of technologies. Discuss the following techniques.
(10 marks)
Frame relay
ADSL
FDDI

Telecommunication Networks (Bbit 242) (Cisy 231) 1St Trimester 2015 Question Paper

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