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  1. Which of following is not a stream cipher?
  2. A.
    twofish
    B.
    RC5
    C.
    RC4
    D.
    TBONE

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  3. What is a Hash Function ?
  4. A.
    It creates a small flexible block of data
    B.
    It creates a small,fixed block of data
    C.
    It creates a encrypted block of data
    D.
    none of the mentioned

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  5. MD5 produces __ bits hash data ?
  6. A.
    128
    B.
    150
    C.
    160
    D.
    112

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  7. SHA-1 produces __ bit of hash ?
  8. A.
    128
    B.
    160
    C.
    150
    D.
    112

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  9. What is role of Key Distribution Center ?
  10. A.
    It is used to distribute keys to everyone in world
    B.
    It intended to reduce the risks inherent in exchanging keys
    C.
    a and b both
    D.
    none of the mentioned

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