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UGC NET COMPUTER SCIENCE MODEL SOLVED PAPER FOR JUNE 2015

1. Consider the following transaction involving two bank accounts x and y

read(x); x := x -50; write(x); read(y); y := y - 50; write(y)

The constraint that the sum of the accounts x and y should remain constant is that of

(A) Atomicity

 (B) Consistency

(C) Isolation

(D) Durability

Ans : B

2. Consider the following two statements

S1:If a candidate is known to be corrupt, then he will not be elected.

S2:If a candidate is kind, he will be elected

Which one of the following statements follows from S1 and S2 as per sound inference

rules of logic?

(A) If a person is known to be corrupt, he is kind

(B) If a person is not known to be corrupt, he is not kind

(C) If a person is kind, he is not known to be corrupt.

(D) If a person is not kind, he is not known to be corrupt.

Ans : C

3. A software requirements specification (SRS) document should avoid discussing which

one of the following?

(A) User Interface issues

(B) Non-functional requirements

(C) Design Specification

(D) Interfaces with third party software

Ans : C

4.  Which allows you to create a derived class that inherits properties from more than one base class?

(a) Multilevel inheritance

 (b) Multiple inheritance

(c) Hybrid Inheritance

(d) Hierarchical Inheritance

Ans.: b

5.  Unix operating system is based on

(a) Language structure

(b) Kernel approach

(c) Virtual machine

(d) Time sharing

Ans.: b

6. TLB is acronym for

(a) Translation Looking Buffer

(b) Translation Look aside Buffer

(c) Translation Left Buffer

(d) Translation Look Block

Ans.: b

7. The principle of ‘locality of references’ justify the use of

(a) DMA

 (b) Polling

 (c) Cache memory

 (d) Virtual memory

Ans.: c

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