www.alagappauniversity.ac.in MCA Alagappa University Model Question Paper : Distance Education

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DISTANCE EDUCATION
M.C.A. DEGREE EXAMINATION, MAY 2011.
Non-Semester
DIGITAL COMPUTER ORGANISATIONS
(2001 onwards)

Time : Three hours Maximum : 100 marks

http://www.alagappauniversity.ac.in/files/question_paper/MCA%20(NS).doc
http://www.alagappauniversity.ac.in/...tion_paper.php

Answer any FIVE questions.
All questions carry equal marks. (5 ? 20 = 100)

1.(a)Describe the different types of complements.
(b)Write about error detection codes.

2.(a)State and prove De Morgan’s theorems.
(b)Reduce the following function by Karnaugh map and represent the reduced function in sum of products and products of sums forms :
.
3.(a)Draw the logic diagram of master-slave flip-flop and explain.
(b)Write about shift registers. Also explain how can you perform serial transfer between registers.

4.(a)Draw the circuit for half adder and explain.
(b)How can you perform addition and subtraction in a parallel arithmetic element?

5.(a)Describe the different types of RAM.
(b)Explain the organization of magnetic disk memory.

6.(a)Explain how the instructions are executed.
(b)List out the sequence of operations of control register and explain.

7.(a)What is interrupt? How can you establish priority interrupt?
(b)Explain the DMA transfer with an example.

8.(a)Design a encoder and explain.
(b)Design a BCD counter and explain.

DISTANCE EDUCATION
M.C.A. (NS) DEGREE EXAMINATION, MAY 2011.
PRINCIPLES OF INFORMATION TECHNOLOGY
(2001 & 2002 Batches Onwards)

Time : Three hours Maximum : 100 marks

Answer any FIVE questions.
(5 ? 20 = 100)
1.(a)How analog computer differs from digital computer?
(b)Write a note on WWW.

2.(a)What are the four types of applications software?
(b)Discuss the salient features of database software.

3.(a)Define Network. Discuss its categories.
(b)Give the importance of virtual office.

4.(a)Write short notes on :
(i)Modems.
(ii)E-Mail.
(b)List various factors affecting data transmission. Explain.

5.(a)List out various types of constants in C. Explain with examples.
(b)State the arithmetic operators in C and explain their precedence relationships.

6.(a)Describe the different specifiers of Scanf ( ) and Printf ( ) functions.
(b)Explain any three decision control statements in C.

7.(a)Distinguish between one dimensional arrays and multidimensional arrays.
(b)Write short notes on pointers.

8.(a)Briefly explain about recursive functions with an example.
(b)Explain the advantages of using functions.

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