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BSc (IV Semester) Examination
PHYSICS
Paper : PHYSK–242 (Skill-based Course)
( Fundamentals of Computers )
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
Note : 1. Section—A is compulsory and answer any four questions from Section—B.
2. The figures in the margin indicate full marks for the questions.
1. Answer the following questions : 2×10=20
(a) Name different components of a computer.
(b) Distinguish between primary and secondary memory.
(c) Write the truth table of NAND gate.
(d) Distinguish between hardware and software.
(e) What is the difference between LAN and WAN?
(f) What do you mean by computer virus?
(g) Mention different operating systems of a computer.
(h) Convert to decimal.
(i) What is hard disk?
(j) Convert to octal.
Answer any four of the following questions : 15×4=60
2. (a) What is programming language? Write about different types of programming language. 5
(b) Write an algorithm to pick the largest of four numbers. 5
(c) What is a flowchart? Draw the flowchart to classify the types of triangle. 5
3. (a) Using only NAND gate, how OR gate, AND gate and NOT gate can be created? 8
(b) Prove the following Boolean identity : 7
4. (a) State and prove De Morgan’s theorem. 8
(b) Write a C program to calculate the area of a circle. 7
5. (a) What are different types of computer network? Write the characteristics of different computer network topologies. 8
(b) Discuss different types of memory of a computer. 7
6. Write short notes on any five of the following : 3×5=15
(a) MS-Office
(b) E-mail
(c) Internet
(d) Multiplexer
(e) Barcode reader
(f) Smart card
