## Monday, 9 October 2017

### UGC Net Computer Science Paper 3 Dec 13 Page 7

61. Which of the following is not true with respect to a trackball and/or spaceball ?
I. A trackball is a two dimensional positioning device while as a spaceball provides six degrees of freedom.
II. Unlike the trackball a spaceball does not actually move.
III. A trackball is a three dimensional positioning device while as a spaceball provides six degrees of freedom.

(A) I & II
(B) II & III
(C) II only
(D) III only

62. Which of the following statement(s) is (are) true ?
I. Two successive translations are additive.
II. Two successive rotations are additive.

III. Two successive scaling operations are multiplicative.
(A) I and II
(B) I and III
(C) II and III
(D) All the above

63. Given below are three basic rules :
I. Squash and Stretch
II. Slow-in and Slow-out
III. To stage the action properly
These rules are applied in case of
(A) Rendering
(B) Morphing
(C) Animation
(D) All the above

64. Which of the following points lies on the same side as the origin, with reference to the line 3x + 7y = 2 ?
(A) (3, 0)
(B) (1, 0)
(C) (0.5, 0.5)
(D) (0.5, 0)

65. The transformation matrix required for conversion of CMY colour model to RGB colour model is given as :

66. What steps shall be required to rotate an object about the point P1 (as shown in fig. 1) and its placement such that what was at P1 is now reduced and is at P2 (as shown in fig. 2) ?

I. Translate P1 to origin
II. Scale as required
III. Rotate
IV. Translate to the final position P2.
(A) I, II and III
(B) II, III and IV
(C) I, III & IV
(D) All of the above

67. In Unix, how do you check that two given strings a and b are equal ?
(A) test \$a –eq \$b
(B) test \$a –equal \$b
(C) test \$a = \$b
(D) Sh –C test \$a = = \$b

68. In windows 2000 operating system all the processor-dependent code is isolated in a dynamic link library called
(A) NTFS file system
(B) Hardware abstraction layer
(C) Microkernel
(D) Process Manager

69. To place a sound into a word document, following feature of windows is used :
(A) Clip board
(C) C Win App
(D) OLE

70. Translation Look-aside Buffer (TLB) is
(A) a cache-memory in which item to be searched is compared one-by-one with the keys.
(B) a cache-memory in which item to be searched is compared with all the keys simultaneously.
(C) an associative memory in which item to be searched is compared one-by-one with the keys.
(D) an associative memory in which item to be searched is compared with all the keys simultaneously.

71. Simplest way of deadlock recovery is
(A) Roll back
(B) Preempt resource
(C) Lock one of the processes
(D) Kill one of the processes

72. The directory structure used in Unix file system is called
(A) Hierarchical directory
(B) Tree structured directory
(C) Directed acyclic graph
(D) Graph structured directory

73. Which statement is not true about process O in the Unix operating system ?
(A) Process O is called init process.
(B) Process O is not created by fork system call.
(C) After forking process 1, process O becomes swapper process.
(D) Process O is a special process created when system boots.

74. Which of the following commands would return process_id of sleep command ?
(A) Sleep 1 and echo \$?
(B) Sleep 1 and echo \$#
(C) Sleep 1 and echo \$×
(D) Sleep 1 and echo \$!

75. Possible thread states in Windows 2000 operating system include :