Basic Digital Communications Online Exam Quiz
Basic Digital Communications GK Quiz. Question and Answers related to Basic Digital Communications. MCQ (Multiple Choice Questions with answers about Basic Digital Communications
For n input bits the number of substitution patterns are
Options
A : 2n
B : (2n)!
C : 1/2n!
D : 2n!
Synchronous ciphers uses
Options
A : Confusion
B : Diffusion
C : Confusion & Diffusion
D : None of the mentioned
Encryption transformations are known as
Options
A : Diffusion
B : Confusion
C : Diffusion & Confusion
D : None of the mentioned
Which should be kept as a secret in public key cryptosystem?
Options
A : Encryption key
B : Decryption key
C : Encryption & Decryption key
D : None of the mentioned
Public key cryptosystem is also known as
Options
A : One way function
B : Two way function
C : Feedback function
D : None of the mentioned
Euler’s totient function is determined by
Options
A : pq
B : (p-1)(q-1)
C : (p+1)(q+1)
D : p/q
The substitution of the letters are done
Options
A : Serially
B : Parallel way
C : Serially & Parallel way
D : None of the mentioned
In cipher feedback method, encryption is done on
Options
A : Single individual bits
B : Characters
C : Single individual bits & Characters
D : None of the mentioned
In transposition, the plaintext letters are
Options
A : Substituted
B : Rearranged
C : Removed
D : None of the mentioned
In which method, key-stream is generated independently?
Options
A : Synchronous
B : Self synchronous
C : Synchronous & Self synchronous
D : None of the mentioned
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