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University of Barishal

Department of Computer Science and Engineering

1st Mid Exam

Course Title: Data Communication (CSE-2205)

Semester: 4th | Session: 20-21

Time: 60 minutes | Marks: 20.00

Course Teacher: Md Mahbub E Noor

(Answer all of the following questions)

1.


1)

What do you mean by data communication? Write shortly about the main components of a data communication system.

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Topics: Basic Data Communication Solution is Coming!
2 Marks
2)

What is data representations? Write shortly about different modes of data flow.

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3 Marks
3)

When two or more devices connected through links, there is a term called "physical topology". So what do you mean by this term? Write the advantages and the disadvantages of those topologies.

For n devices in a network, what is the number of cable links required for each of those topologies?

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5 Marks
4)

What do you mean by switching? Write the advantages and the disadvantages of different switching techniques.

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3 Marks
5)

What do you mean by network models and protocol layering?

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2 Marks
6)

Write shortly about the responsibilities of different layers of the OSI model.

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5 Marks

Contributors of this Question:

Role Name Date
Prepared By (Teacher): Md Mahbub E Noor N/A
Uploaded By: Onebyzero Edu (Test User) Aug. 17, 2024, 12:54 p.m.
Converted By (Img/PDF to Text): Baishakhi Bir Nov. 29, 2025, 12:29 a.m.
Reviewed By: Obaydul Hasan Nayeem Nov. 29, 2025, 10:45 a.m.