Information Security BS/MS Information Security 5 Semester/Term University Of Sargodha (UOS) 2024

University of Sargodha

BS 5' Terma Examination 2024

Subject: 1.T

Paper: Information Security (CMPC-303)

Time Allowed: 02:30 Hours

Maximum Marks: 60

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 each on your answer sheet

%.

•p.

What is a Digita! Signature?

What is our-of-band attack?

What is a trapdoor? Give an example.

-

iv.

Y.

-V1.

yA.

Discuss distnibuted Firewalls.

Difference between software quality and software security.

What is a one-way function?

What services are provided by IPsec?

Discuss Secure Sockets Layer (SSL).

Define an extended service set.

Differentiate between substitutien and transposition.

Discuss active attack vs passive aitack.

What is a message authentication code?

(2"12)

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I.COI

Q.4.

.5.

Subjective Part

(3*12)

Discuss in detail DES structure also draw a single DES encryption round.

Discuss in detail cloud security risk and countermeasures. Also how data protection is done on

cloud?

Discuss how S/MIME is different from PGP, aiso discuss the functionalities and certificate

processing of S MIME.

Discuss in detail about IEEE 802.1 li Wireless LAN security, services and phase of operations.

What is meant by firewal! draw the general model diagram of it? Also discuss different types of

Firewalls in detail.

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