Paper 3 UGC NET Computer Science MCQS 2013

Paper 3 UGC NET Computer Science MCQS 2013

1. A virtual function is generally defined in
Ans.: Derived class

2. A Nor gate generally recognizes inputs whose bits are
Ans.: 0's
Explanation: NOR Gate

A	B	___ A+B
0	0	1
0	1	0
1	0	0
1	1	0

3. The output of a logic gate is 1 when all its inputs are at logic 0 then the gate is

Ans.: a NOR or an EX-NOR

Explanation:NOR Gate

A	B	___ A+B
0	0	1
0	1	0
1	0	0
1	1	0

EX-NOR Gate:

A	B	Ex-Nor
0	0	1
0	1	0
1	0	0
1	1	1

4. An optimal scheduling algorithm in terms of minimizing average waiting time of a given set of processes is

Ans.: Shortest Job First scheduling algorithm

5. A combinational logic circuit used to send data coming from a single source to two or more separate destinations is 

Ans.: De-multiplexer

Explanation: De-multiplexer has n inputs and 2^n outputs.

6. The process of converting digital data to digital signal is

Ans.: Line Coding

7. The transmission channel where bits are sent one after another without start and stop loop is

Ans.: Synchronous transmission

8. FDDI(Fiber Distributed Data Interconnect) is an example of

Ans.: Token ring

9. Which TCP/IP protocols are used to monitor IP gateways and networks

Ans.: SGMP(Simple Gateway Monitoring Protocol)

 and SUMP(Secure Unicast Messaging Protocol)

10. Radix sort also called as

Ans.: Card sort

11. Objective of testing is
Ans.: To Uncover errors

12. In object oriented design of software, objects have
Ans.: Attributes,names,operations

13. Spiral model developed by
Ans.: Barry boehm

14. Which provides a mechanism  to allow processes to communicate and to synchronise their actions without sharing the same address space?
Ans.: Inter process communication

15. Round Robin scheduling gives
Ans.: Each task the same chance at the processor.

16. Thrashing can be avoided if
Ans.: Pages, belonging to the working set of the programs are in main memory.

17. The field that investigates the mechanics of human inteligence is
Ans.: Cognitive science

18. The method of programming a computer to exhibit human intelligence is called as
Ans.: Modeling or simulation

19. Components of expert system
Ans.: Production rules
Rule interpreters
control rules

20. Frequency dependent code is
Ans.: Huffman code

Incase of any doubts, Please leave a comment  in the comments box.