University of Sargodha BS 4* Term Examination 2014. Subject: I. T Paper: Computer Communication & Network (CMP-330) Time Allowed: 2:30 Hours
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Paper text
University of Sargodha
BS 4* Term Examination 2014.
Subject: I. T Paper: Computer Communication & Network (CMP-330)
Time Allowed: 2:30 Hours
Session: 2012-16
30G0
Maximum Marks: 80
Note:
Objective part is compulsory. Attempt any four questions from subjective part.
Objective Part
Q.1.
Write short answers of the following questions in 2-3 lines only
Explain SNR with example.
What is MAC, write name of two protocols of MAC layer?
What is the difference between ISO and OSI?
Explain the difference between frequency domain and time domain with example.
y. o Why two units for bandwidth are used i.e. bps or Hz?
VI.D
What is latency?
Explain multiplexing with suitable example.
Why attenuation is much higher in twisted pair cable with lesser number of twists?
Is Circuit switched network is efficient than packet switched network? Justify your answer.
What is meant by flow control and which layer is responsible for this.
Explain the difference between TCP and UDP.
Explain scrambling with suitable example.
What is encryption? Which layer of OSI model is responsible to do this?
What is the difference between signal rate and data rate?
Describe the drawbacks of Infra-red network.
What are the different types of optical fiber?
(2*16)
Q.2.
Q.3.
0.4.
Q.5.
Q.6.
Q.7.
Subjective Part
(4*12)
Consider Telecommunication Company TEL' has thought to deploy infrastructure they have 5
main offices and in each main office they have 10 computers. One of the main office is handling
security. Security office should not have any point of failure, Draw topological diagram for given
situation. Clearly mention assumptions that you are using for above mentioned deployment
scenario, along with the design and proper justification.
Explain switching in detail along with circuit switching and packet switching.
Discuss Network Security Issues in detail.
Write a note on:
a. Virtual circuit network
b. Delta modulation
Discuss noise impairments in detail.
Discuss network topologies with appropriate exampleswebsite: ustadni.com