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Cisy 333:Wireless Communication Question Paper

Cisy 333:Wireless Communication

Course:Bachelor Of Computer Science

Institution: Kenya Methodist University question papers

Exam Year:2013

KENYA METHODIST UNIVERSITY

END OF 3RDTRIMESTER 2013 (DAY) EXAMINATION
FACULTY : COMPUTING & INFORMATICS
DEPARTMENT : COMPUTER SCIENCE AND BUSINESS
INFORMATION
UNIT CODE : CISY 333/BBIT 444
UNIT TITLE : WIRELESS COMMUNICATION
TIME : 2 HOURS

INSTRUCTIONS

Answer question one and any other two question

Question one (30 marks)

Define a wireless channel

(2 Marks)

Briefly describe the following terms as used in wireless communication
Cell
Hand off
Frequency reuse
Eaves dropping

Delayed acknowledgement

(10 marks)

Briefly describe the two types of wireless networks

(4 marks)

Congestion control in wireless networks introduces certain challenges that make implementation difficult
Outline two challenges in implementing congestion control (2 marks)

Outline the three option in solving the problems relating to implementing congestion control

(3 marks)

Distinguish between soft handoff and hard handoff as used with mobile wireless networks

(4 marks)

Briefly describe the following technologies for wireless networks

Mobile IP

(2 marks)

Bluetooth

(3 marks)

Question Two (20 marks)

With the help of a diagram, describe the direct-TCP implementation for wireless communication

(10 marks)

Define a wireless LAN and describe how it differs from wireless local loop

(4 marks)

Wireless communication largely employs spread spectrum for communication. Briefly describe the three techniques used

(6 marks)

Question Three (20 marks)

State and briefly describe the five characteristics of a wireless channel. Use example where possible

(10 marks)

Wireless wide area networks (WWAN) employ two fundamental modes of transmitting data. Outline these two modes

(2 marks)

Distinguish between cellular based WWANs and space based WWANs

(2 marks)

State and briefly describe the three types of wireless ad-hoc networks

(6 marks)

Question Four (20 marks)

Briefly describe the following protocols of wireless network security
WPA
WEP

WIDS

(6 Marks)

Define the wireless application protocol (WAP) and outline the five layers of the WAP protocol suite

(6 marks)

State and briefly describe the four multiplexing techniques used in wireless wide Area networks (WWANs)

(8 marks)

Cisy 333:Wireless Communication Question Paper

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