Information Security BS/MPhil Information Technology/MS Information Technology University Of Sargodha (UOS) 2022
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Paper text
University of Sargodha
19BSIT 29394
BS 50 Term Examination 2022
Paper: Information Security (CMPC-303)
Maximum Marks: 80
usto
Subject: Information Technology
Time Allowed: 02:30 Hours
Note:
Objective part is compulsory. Attempt any three questions from subjective part.
Objeetive Part
•(Compulsory)
Q.1.
Write short answers of the following in 2-3 lines each on your answer sheet.
(2*16)
Define the Computer Security.
ii.
ili.
Iv.
V.
vi.
vil.
How many keys are required for 2 people to communicate via a symmetric cipher?
What is Digital Signature?
What is Brute Force attack"
Explain the functionality of 3DES.
ustadni.com
What is Hash Function?
Write the function of Handshake Protocol.
What is Timing Attack?
ix.
x.
xi.
xii.
xili.
xiv.
XV.
xvi.
Define Feistel Structure.
How Host Based Intrusion Detection works?
Define the Logic Bomb.
Discuss about Bots and Zombie.
How User Input SQLi works?
Give an example of Command Injection.
How Stateful Inspection Firewall works?
Which clements of communication are encrypted in HITPS?
Subjective Part
(3*16)
Q.2.
Q.3.
Q.4.
Discuss the TLS according to Architecture and Protocols.
What is Intrusion Detection System? Give difference between Host Based and Network Based IDS?
In RSA if e-13 and n=100
Verify n is correct?
b. Encrypt the message "HAPPY" using 0-25 for A to Z
C.
Can the obtained ciphered text be decrypted?
1.5.
Discuss the following parts:
How Trojan Horses and Phishing work?
b. Discuss about Worms and Viruses.
c. Counter measures for Malware.
.б.
Perform the AES Encryption and give output of the Round 1 by using following data:
State Matrix = 54 4F 4E 20
Round No 0=
54 73 20 67
77 6E 69 54
68 20 4B 20
6F 65 6E 77
61 6D 7546
20 20 65 6F
74 79 6E 75
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Round No le
E2 91 BI D6
32 12 59 79
FC 91 E4 A2
F1 88 E6 93
com
(16)
(16)
(5)
(6)
(5)
(5)
(5)
(6)
(16
7C
77
781
717
12
FA
CA
117
111
1D
17
311
AT>
34
67
26
AF
FE
D
A1
AS
1A
53
dni.com
CH
BE
15
15
17
DA
TE
40
LE
21
10
14
71
En
30
501
10
DE
31
112
2F
15
75
CF
AN
SD
SE
DS
Ex
91
DD
167
IE
00
74
IF
65
4B
50
CE
50
BD
C1
55
54
14
0B
E4
AE
1D
73
DB
BA
SE
202
BB
DF
16
TV.A740 ..
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