Tribhuvan University

Institute of Science and Technology


Bachelor Level / first-semester / Science

Computer Science and Information Technology( CSC114 )

Introduction to Information Technology

Full Marks: 60 + 20 + 20

Pass Marks: 24 + 8 + 8

Time: 3 Hours

Candidates are required to give their answers in their own words as far as practicable.

The figures in the margin indicate full marks.

Group A (3 x 10)

Attempt any two questions


Discuss the concept behind the fixed point number representation. What can be the fixed point representation of a signed number 8? Convert (14.14)10 into binary and octal.


What is switching? How can you differentiate packet switching from circuit switching? What are the advantages of using optical fibers?


Why system software is needed in computers? Discuss various types of operating system.

Group B (8 x 5)

Attempt any eight questions


What is the role of Control Unit in CPU? How analog computer differs from digital?


How RISC architecture differs from CISC architecture?


What is the purpose of cache memory? How sequential access differs from direct access?


Explain the working mechanism of a keyboard.


Why IP address is used in internet? Mention the significance of domain names in internet


Define computer network. Suppose you have a two story building having 15 computers in each of two floors. Now if you are asked to create a network of these computers, what type of network will you create? Give proper justification to your answer.


What is malicious software? How virus differs from worms?


Discuss the characteristics of multimedia.


What is database system? How data can be stored using relational model.