91. The range of the function f(x) x2/1+x2 is
A. (-infinity, +infinity)
B. (0, infinity)
C. (-infinity, 0)
D. (0,1)
92. A and B are two 8-bit numbers such that A+B <=28, the numbers of possible combinations of A and B is
A. 2^9su
B. 2^8
C. 2^16
D.2^4-1
93.Which of the following is tautology?
A. (a v b) -> (b^c)
B. (a^b) -> (b v c)
C. (a v b) -> (b ->c)
D. None of the above
94. From a complete graph by removing maximum ____ edges, we can construct a spanning tree.
A. e – n + 1
B. n – e + 1
C. n + e – 1
D. e – n – 1
95. In how many ways can 8 Indians, 4 Americans and 4 Englishmen be seated in a row so that all persons of sane nationality sit together?
A. 3! 4! 8! 4!
B. 3! 8!
C. 4! 4!
D. 8! 4! 4!
96. The total number of words by 2 vowels and 3 consonants taken from 4 vowels and 5 consonants is
A. 60
B. 120
C. 7200
D. None of the above
97. The output F of the circuit
is given by
A. 1
B. 0
C. x
D. x’
98. Which of the following is a memory element?
A. NAND gate
B. SR flip-flop
C. NOT gate
D. Universal gate
99. Which of the following is Universal gate?
A. NOT
B. NAND
C. OR
D. AND
100. The binary equivalent of the gray code 11100 is
A. 10111
B. 00111
C. 01011
D. 10101
101. Which of the following is not necessarily a property of a group?
A. Commutativity
B. Associativity
C. Existence of inverse for every element
D. Existence of identity
102. What is the possible number of reflexive relations on a set of 5 elements?
A. 2^10
B. 2^15
C. 2^20
D. 2^25
103. From the given digits
2, 2, 3, 3, 3, 4, 4, 4, 4
How many 4-digit numbers greater than 3000 can be formed?
A. 50
B. 51
C. 52
D. 54
104. What is the maximum number of different function involving n Boolean variables?
A. n^2
B. 2^n
C. 2^n^n
D. 2^2^n
105. The number of equivalence relations of the set {1, 2, 3, 4} is
A. 4
B. 24
C. 25
D. 15
106. What is the range of the following function?
{(4, 8), (9, 2), (-3,-4)
A. {4, 9, -3}
B. {8}
C. {(4, 8), (9, 2), (-3,-4)
D. {8, 2, -4}
107. In the given graph identify the cut vertices:
A. B and E
B. C and D
C. A and E
D. C and B
108. ______ monitors user’s activity on internet and transmits that information in the background to someone else.
A. Malware
B. Spyware
C. Adware
D. None of the above
109. A portion of the polymorphic virus, generally called a ______, creates a random encryption key to encrypt the remainder of the virus.
A. polymorphic engine
B. multiple engine
C. mutual engine
D. mutation engine
110. SSID stands For
A. Secure service identifier
B. Secure set independent device
C. Service set identifier
D. Service set independent device
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