UGC NET COMPUTER SCIENCE SOLVED QUESTION
AND ANSWERS
1. Which of the following is the
function of mid-term scheduler in a time-sharing system?
(a) Process creation (b) Context
switching
(c) Swapping (d) Controlling degree of
multiprogramming
Ans.: b
2. To avoid the race condition, the
number of processes that may be simultaneously inside their critical section is
(a) 8 (b) 1 (c) 16 (d) 0
Ans.: b
3. Thrashing
(a) is a natural consequence of
virtual memory systems
(b) can always be avoided by
swapping
(c) always occurs on large computers
(d) can be caused by poor paging algorithms
Ans.: d
4. The number of entries in an
inverted page table
(a) Depends on the size of the
process.
(b) is equal to the number of
page frames in main memory.
(c) Is equal to the number of
page frames in virtual memory.
(d) Is equal to the size of the page frame.
Ans.: b
5. Water fall model for software
development is:
(a) A top down approach
(b) A bottom up approach
(c) A sequential approach
(d) A consequential approach.
Ans.: a
6. In software development, value
adjustment factors include the following among others.
(a) The criticality of the
performance and reusability of the code.
(b) Number of lines of code in
the software.
(c) Number of technical manpower
and hardware costs.
(d) Time period available and the level of user
friendliness.
Ans.: a
7. In clean room software
engineering:
(a) Only eco-friendly hardware is
used.
(b) Only hired facilities are
used for development.
(c) Correctness of the code is
verified before testing.
(d) Implementation is done only after ensuring
correctness.
Ans.: d
8. The chief Programmer method of
development of software was initially used at
(a) IBM
(b) Microsoft
(c) TCS
(d) Infosys
Ans.: a
9. The addressing mode used in
the instruction of the form ADD X, Y is
(a) Absolute
(b) Immediate
(c) Indirect
(d) Index
Ans.: a
10. The postfix expression for
the infix expression is
A + B*(C+D)/F+D*E is
(a) AB + CD + *F/D+E*
(b) ABCD + *F/DE*++
(c) A*B + CD/F*DE++
(d) A+*BCD/F*DE++
Ans.: b
11. Which of the following graph
has an eulerian circuit?
(a) Any k-regular graph where k
is an even number
(b) Any complete graph on 90
vertices
(c) The complement of a cycle on
25 vertices
(d) None of these.
Ans.: a
12. What’s the difference between
servlets and applets?
(1) Servlets executes on Servers,
where as Applets executes on Browser
(2) Servlets have no GUI, where
as an Applet has GUI
(3) Servlets creates static web
pages, where as Applets creates dynamic web pages
(4) Servlets can handle only a
single request, where as Applet can handle multiple requests
(a) 1,2,3 are correct
(b) 1,2 are correct
(c) 1,3 are correct
(d) 1,2,3,4 are correct
Ans.: b
13. AppletViewer tool is
available in which of the folder of JDK
(a) Bin
(b) Lib
(c) Source
(d) Class
Ans.: a
14. Which is the method that
starts the applet?
(a) Main()
(b) Destroy()
(c) Init()
(d) Reprint()
Ans.: c
15. Which of the following
concepts means adding new concepts to a program as it runs ?
(a) Data hiding
(b) Dynamic loading
(c) Dynamic typing
(d) Dynamic binding
Ans.: b
16. Match the following with
respect to programming languages :
List -1 List -
II
(A) Structured Language (I) AVA
(B) Non-structured Language (II)
BASIC
(C) Object Oriented Language (III) PASCAL
(D) Interpreted Language (IV)
FORTRAN
Language Codes :
(a) A-III, B-IV, C-I, D-II
(b) A-IV, B-III, C-II, D-I
(c) A-II, B-IV, C-I, D-III
(d) A-II,
B-III, C-IV, D-I
Ans.: a
17. Important advantage of using
new and delete operators in C++ is
(a) Allocation of memory
(b) Frees the memory previously
allocated
(c) Initialization of memory
easily
(d) Allocation of memory and frees the memory
previously allocated.
Ans.: d
18. Which of the following
connects segments of a LAN?
(a) switch
(b) bridge
(c) router
(d) hub
Ans.: b
19. Which of the following
operates only at the physical and data link layer?
(a) ATM
(b) Stop-and-wait ARQ
(c) Frame relay
(d) ICMP
Ans.: c
20. What is the IEEE protocl
version for ethernet?
(a) 800
(b) 801
(c) 802
(d) 803
Ans.: c
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