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Information Security BS/MS Information Security 5/1 Semester/Term Islamia University Bhawalpur (IUB) 2024

Information Security BS/MS Information Security 5/1 Semester/Term Islamia University Bhawalpur (IUB) 2024 — page 1

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Paper text

23 B$(IT) 64

University of Sargodha

BS (5"" Intake) 1" Term Exam 2024

Paper: Information Security (CMPC-4542)

Subject: 1.1

Maximum Marks: 60

Time Allowed: 2:30 Hours

Note: Objective part is compulsory. Attempt any three questions from subjective part.

Objective Part

(Compulsory)

Q.1. Write short answers of the following in 2-3 lines of each on your answer sheet.

What is the difference between an attack surface and an attack tree?

What is a digital signature?

What are two common techniques used to protect a password file?

How does RBAC relate to DAC and MAC?

Explain the nature of the inference threat to an RDBMS.

What is a "logic bomb"?

What is a honeypot?

What is a circuit-level gateway?

Define an injection attack.

Define asset, control, threat, risk, and vulnerability.

What is digital rights management?

What is a one-way function?

(2*12)

Subjective Part

(3*12)

Q.2

Q,3.

Q.4.

Q.5.

Q.6.

Perform encryption-and decryption using the RA algorithm, for p= 11, 9 = 13, with key e = 11,

for message M=

7.

Write an algorithm for RC4.

The following PHP code is vutherable to an attack. Write the attack name and write a code for the

same purpose which is safer.

Sname = $_REQUEST['name'];

Squery = "SELECT * FROM suppliers WHERE name = '"' Sname. ''';

Sresult = mysql_query(Squery);

What is an SSL certificate? How does this certificate work?

What is the purpose of a HASH function? Discuss properties of a HASH function.

- LK-9016/05-07-24 -