ALLAMA IQBAL OPEN UNIVERSITY
Level: BCS / BS (CS) / BIT: Spring 2008
Paper: Data and Network Security (Code 3484) Maximum marks: 100
Time allowed: 3 Hours Pass marks: 40
Note: ATTEMPT ANY FIVE QUESTIONS. ALL QUESTIONS CARRY EQUAL MARKS
a) Discuss modern security trends and importance of Network security?
b) Explain the different types of network attacks.
a) How the confidentiality of information be achieved? Discuss different techniques to achieve confidentiality.
b) What components are involved in Physical and Data security safeguards?
a) What is encryption? Discuss Classical & Modern encryption techniques.
b) Differentiate between DES and triple-DES.
Discuss following security standards and protocols:
a) What are the back-doors and trap-doors?
b) Discuss sniffing and its applications.
a) Define digital signatures and its potential applications
b) Define authentication. Its importance and applications
a) How the software exploitation works?
b) Discuss TCP/IP hijacking?
a) Reply Attack
b) Password guessing
c) Hash function
d) Physical security
e) Integrity models
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