Top 150+ Solved Information and Network Security MCQ Questions Answer
Q. The number of unique substitution boxes in DES after the 48 bit XOR operationare___.
a. 4
b. 8
c. 12
d. 16
Q. What is the number of possible 3 x 3 affine cipher transformations?
a. 840
b. 168
c. 1344
d. 1024
Q. The S-Box is used to provide confusion, as it is dependent on the unknown key.
a. True
b. False
c. none
d. all
Q. In an RSA system the public key of a given user is e = 31, n = 3599. What is the privatekey of this user?
a. 1023
b. 2432
c. 2412
d. 3031
Q. Compute private key (d, p, q) given public key (e=23, n=233 ´ 241=56,153).
a. 32432
b. 19367
c. 12543
d. 35212
Q. For p = 11 and q = 19 and choose e=17. Apply RSA algorithm where message=5 andfind the cipher text.
a. C=23
b. C=56
c. C=92
d. C=80
Q. Perform encryption on the following PT using RSA and find the CT. p = 3; q = 11; M= 5.
a. 18
b. 12
c. 26
d. 28
Q. Perform encryption on the following PT using RSA and find the CT. p = 5; q = 11; M= 9.
a. 43
b. 14
c. 112
d. 54
Q. Perform encryption on the following PT using RSA and find the CT. p = 7; q = 11; M= 8.
a. 58
b. 34
c. 123
d. 57
Q. Perform encryption on the following PT using RSA and find the CT. p = 11; q = 13;M = 7.
a. 78
b. 45
c. 124
d. 25
Q. Perform encryption on the following PT using RSA and find the CT. p = 17; q = 31;M = 2.
a. 128
b. 124
c. 127
d. 167