Wednesday, December 24, 2014

Computer Organization And System Maintenance - Question Paper of BCA 1st Year April 2011 - Panjab University

Panjab University Chandigarh
Computer Organization And System Maintenanc

Paper : BCA 1st Year
Time : 3 Hrs.
M.Marks : 90

Note : Attempt five questions in all. select one question each from Sections A-D and the ninth compulsory question

Section - A

1. (a) Why various codes are required and used to represent information ? Explain various types codes also. 9
(b) What are Flip-Flops ? Explain the working of Rs Flip-Flop. 9

2. (a) How addition is performed for 2's complement numbers ? Explain. 9
(b) Explain Encoder and Decoder combinatorial circuits with their importance. 9

Section - B

3. (a) How data transfer take place in direct memory access mechanism ? 9
(b) What are Addressing Models ? Explain various Register Based Communication. 9

4. (a) Explain vector and priority interrupts. 9
(b) Draw difference between Stroke based and Handshake based Communication. 9

Section - C

5. (a) How static and dynamic RAM are organized ? Explain. 9
(b) Write an Assembly language program for integer multiplication. 9

6. (a) Explain Virtual Memory Organization in detail. 9
(b) Explain Booth's algorithm in detail with its execution with suitable inputs. 9

Section - D

7. (a) Define and Explain System maintenance in detail. 9
(b) Briefly give the functional description of various cards used in PC. 9

8. (a) Which are various internal cards used in PC ? Explain in detail. 9
(b) How viruses are detected and how computers are protected from them ? Explain. 9

Section - E

9. Compulsory question. Explain the following :
(a) Gates
(b) Sequential Circuits
(c) Micro-operation
(d) Register Transfer
(e) Instruction format
(f) Peripherals used in PC
(g) Diagnostics on a PC
(h) Associative Memory
(i) Floating representation of a number 9*2=18



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