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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
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Cryptography Class 12 MCQ Questions With Answers
1.
Key
algorithm for transforming plaintext to ciphertext
info used in cipher known only to sender/receiver
•recovering ciphertext from plaintext
•converting plaintext to ciphertext
2.
Authentication
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
3.
Cipher
•study of principles/methods of deciphering ciphertext without knowing key
•converting plaintext to ciphertext
•coded message
algorithm for transforming plaintext to ciphertext
4.
Document containing only text
Ciphertext
Cipher
Plaintext
Algorithm
5.
Shifting letters around to make text unreadable known as cryptographic algorithms is referred to as
Sifr
Cipher
Encryption
Plaintext
6.
Decipher
original message
algorithm for transforming plaintext to ciphertext
recovering plaintext from ciphertext
•field of both cryptography and cryptanalysis
7.
This is a mathematical procedure for performing encryption
Cipher
Algorithm
Substitution
Transposition
8.
Encrypted text
Ciphertext
Plaintext
Algorithm
Cipher
9.
This method of encryption is the replacement of an item with a different item.
Transposition
Confusion
Substitution
Diffusion
10.
Confidentiality
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
11.
This is as set of possible key values for an algorithm
Work Factor
Cipher
Keyspace
Keyfactor
12.
Encipher
converting plaintext to ciphertext
coded message
•study of principles/methods of deciphering ciphertext without knowing key
study of encryption principles/methods
13.
Cryptography is the science of encrypting or hiding information.
True
False
14.
Integrity
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
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