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    Computer Science and Engineering

    Uploaded by

    Ravikumar Bhimavarapu
    This document is an exam paper for an Information Security course. It contains 11 questions across 2 sections - Part A contains 10 short answer questions covering topics like Caesar cipher, encryption methods, and network security concepts. Part B contains 5 long answer questions, with students required to answer 1 question from each unit. Topics covered include cryptographic algorithms, key exchange protocols, authentication methods, firewalls and intrusion detection. Students are given 3 hours to complete the exam.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Computer Science and Engineering

    Uploaded by

    Ravikumar Bhimavarapu
    41 views2 pages
    This document is an exam paper for an Information Security course. It contains 11 questions across 2 sections - Part A contains 10 short answer questions covering topics like Caesar cipher, encryption methods, and network security concepts. Part B contains 5 long answer questions, with students required to answer 1 question from each unit. Topics covered include cryptographic algorithms, key exchange protocols, authentication methods, firewalls and intrusion detection. Students are given 3 hours to complete the exam.

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    Original Title

    126ZQ042018

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    This document is an exam paper for an Information Security course. It contains 11 questions across 2 sections - Part A contains 10 short answer questions covering topics like Caesar cipher, encryption methods, and network security concepts. Part B contains 5 long answer questions, with students required to answer 1 question from each unit. Topics covered include cryptographic algorithms, key exchange protocols, authentication methods, firewalls and intrusion detection. Students are given 3 hours to complete the exam.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    41 views2 pages

    Computer Science and Engineering

    Uploaded by

    Ravikumar Bhimavarapu
    This document is an exam paper for an Information Security course. It contains 11 questions across 2 sections - Part A contains 10 short answer questions covering topics like Caesar cipher, encryption methods, and network security concepts. Part B contains 5 long answer questions, with students required to answer 1 question from each unit. Topics covered include cryptographic algorithms, key exchange protocols, authentication methods, firewalls and intrusion detection. Students are given 3 hours to complete the exam.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    JJ JJ JJ JJ JJ JJ JJ J

    Code No: 126ZQ


    R15
    JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
    B. Tech III Year II Semester Examinations, April - 2018

    JJ JJ
    Time: 3 hours
    JJ JJ
    INFORMATION SECURITY
    JJ
    (Computer Science and Engineering) JJMax. Marks: 75
    JJ J
    Note: This question paper contains two parts A and B.
    Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
    consists of 5 Units. Answer any one full question from each unit. Each question carries

    JJ JJ JJ JJ JJ JJ JJ J
    10 marks and may have a, b, c as sub questions.

    PART - A
    (25 Marks)

    1.a) Explain the Caesar cipher. [2]


    b) Define confidentiality and authentication [3]

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    c) Differentiate conventional & public key encryption. [2]
    d) What is traffic Padding? What is its purpose? [3]
    e) What is the purpose of X.509 standard? [2]
    f) In the content of Kerberos, what is realm? [3]
    g) Explain the reasons for using PGP. [2]
    h) Compare Transport mode and Tunnel Mode. [3]
    i) What do you mean by malicious software? [2]
    j) What is application level gateway? [3]

    JJ JJ JJ JJ
    PART - B JJ JJ JJ
    (50 Marks)
    J
    2.a) Explain how gateway works in internetwork security model.
    b) Explain the various types of cryptanalytic attacks. [5+5]
    OR

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    3. Explain symmetric and asymmetric key criptography. [10]

    4.a) Explain how key exchange is done using Diffie-Hellman key exchange.
    b) Discuss the “man-in-the-middle” attack. [5+5]
    OR
    5. Explain Blowfish algorithm. [10]

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    6.a) What is HMAC and what are its advantages over MAC?
    b) Discuss different approaches to Message Authentication. [5+5]
    OR
    7. Discuss the requirements of Kerberos. Explain the Kerberos ver-4 message exchanges.
    [10]

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    JJ JJ JJ JJ JJ JJ JJ J
    8.a) Explain the different MIME content types.
    b) Explain S/MIME certificate processing method. [5+5]
    OR

    JJ 9.a)
    b) JJ JJ JJ
    What are the applications of IP security?
    JJ JJ JJ
    Describe the general structure of IPSEC authentication header. Discuss how anti-reply
    service is supported. [5+5]
    J
    10. Explain the different types of firewalls with neat diagrams. [10]
    OR
    11. Discuss about Intrusion Detection and approaches of Intrusion Detection. [10]

    JJ JJ JJ JJ JJ JJ JJ J
    ---ooOoo---

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