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

University of Sargodha

BS 5th Term Examination 2024

Subject: I.T Paper: Information Security (CMPC-303)

Time Allowed: 02:30 Hours

ustatin set 1s computers, Atep any have questions from seligets par.

Maximum Marks: 60

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(Compulsory)

Q.1.

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

What is a Digital Signature?

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(2*12)

What is out-of-band attack?

What is a trapdoor? Give an example.

iv.

W.

Discuss distributed Firewalls.

Difference between software quality and software secunity.

What is a one-way function?

What services are provided by IPsec?

Discuss Secure Sockets Layer (SSL),

Define an extended service set.

Differentiate between substitution and transposition.

Discuss active attack vs passive attack.

What is a message authentication code?

0.2-

Q.3.

Q.4.

Q.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, also discuss the functionalities and certificate

meant by firewall draw the general model diagram of it? Also discuss different types of

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- LK-6740/31-05-24

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