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This set of Information Cyber Security (ICS) Multiple Choice Questions & Answers (MCQs) focuses on Information Cyber Security Set 8

Q1 | A hacker guessing suggested password to a program is call as?
  • password guessing
  • dictionary attack
  • default password attack
  • none of these
Q2 | Symmetric key encryption is also called as?
  • public key encryption
  • private key encryption
  • both of these
  • none of these
Q3 | Conversion of Cypher text to plain text?
  • encryption
  • decryption
  • simple text
  • none of these
Q4 | __is used to create the organisation's overall security program.
  • program policy
  • purpose
  • security
  • none of these
Q5 | An act of protecting information from unauthorised disclouser to an entity.-
  • intergrity
  • avability
  • confidentiality
  • none of these
Q6 | A way to ensure that the entity is indeed what it claims to be.-
  • authentication
  • accountability
  • identification
  • security
Q7 | The__model is 7 layer architecture where each layer is having some specific functionality to perform.
  • tcp
  • osi
  • ois
  • none of these
Q8 | The full form of OSI is OSI model__.
  • open systems interconnection
  • open software interconnection
  • open connection
  • open system internet
Q9 | The technique in which when one character is replaced by another Character is called as?
  • transposition
  • substitution
  • combinational
  • none of these
Q10 | Conversion of plain text into Cipher text is called as________.
  • encryption
  • decryption
  • hidden text
  • none of above
Q11 | In Symmetric schemes requires both parties to share how many secret key?
  • one
  • two
  • three
  • four
Q12 | Blum Blum Shub Generator is based on which Algorithm?
  • private key
  • public key
  • both a & b
  • none of these
Q13 | In DES step both LPT and RPT undergoes in how much key Rounds?
  • 8
  • 16
  • 32
  • 64
Q14 | What is the 4th step in DES Algorithm?
  • key transformation
  • s-box substitution
  • p-box permutation
  • expansion permutation
Q15 | In AES in which Round Subkeys are Generated from Original key for each round?
  • key expansion
  • initial round
  • finale round
  • none of these
Q16 | AES stands for?
  • authorized encryption standard
  • advance encryption standard
  • advance encryption strategy
  • none of these
Q17 | Which of them is type of Cipher?
  • stream cipher
  • block cipher
  • both of them
  • none of these
Q18 | The message which is not understandable is called as?
  • cipher text
  • plain text
  • hidden text
  • both a & c
Q19 | The__is a polygraphic substitution cipher based on linear algebra.
  • hill cipher
  • playfair cipher
  • affine cipher
  • none of these
Q20 | __is the practice of concealing a message within another message,image or file.
  • steganography
  • cryptography
  • cipher
  • receiver
Q21 | In asymmetric key cryptography, the private key is kept by __________
  • sender
  • receiver
  • sender and receiver
  • none of these
Q22 | In cryptography the original message before being transform is called
  • simple text
  • plain text
  • empty text
  • filled text
Q23 | An asymmetric-key (or public-key) cipher uses
  • 1 key
  • 2 key
  • 3 key
  • 4 key
Q24 | In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if the message is
  • short
  • flat
  • long
  • thin
Q25 | In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to
  • other
  • data
  • keys
  • each other