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Wednesday, September 2, 2015

Question Paper of "NETWORK SECURITY" for M. Tech (ECE) (Sem.-1st), Subject Code: CS-503, Paper ID [ E0683], PTU Question Paper.










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Roll No…….
Total No. of Questions: 08

M. Tech. (IT/CSE Engg./E-Security) (Sem.-1st)
NETWORK SECURITY
Subject Code: CS-503
Paper ID: [E0683]

Time: 3 Hrs.                                                                 Max. Marks: 100
Instruction to Candidates:
1.     Attempt any FIVE questions out of EIGHT questions.
2.     Each question carry TWENTY marks.

Q1. Write short note on the following:
(a)  DQDB
(b) IGMP
(c)  ICMP
(d) ADSL
Q2. (a) What do you mean by session high-jacking? Explain in detail with the help of example.
(b) What is role of digital signatures in security? Explain how these signatures are used to ensure security.
Q3. (a) Differentiate between IPV6 and IPV4 protocols. How is addressing done in both? Discuss by taking some examples.
(b) Discuss various Multicasting protocols in detail.
Q4. (a) How SSL protocols encounter the following attacks: Replay attack and password sniffing.
(b) Differentiate between false positive and false negative. Which is more dangerous? Which is difficult to handle and why?
Q5. (a) What is Address Resolution Protocol and what is the purpose solved by this protocol?
(b) In Secured Socket Layer (SSL) connection, is the session key chosen by the client or the server? How is it communicated to the other party?
Q6. (a) What are main components of GSM system architecture? Discuss in detail.
(b) What is GPRS? Discuss GPRS architecture and protocol.
Q7. (a) What are various services provided by IPsec?
(b) Explain in detail protocol stack of IEEE 802.11 wireless LAN.
Q8. (a) What is mobile IP? What are security issues related to mobile IP?

(b) Discuss some of the key distribution protocols.  

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