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Computer Networks
Symmetric Key Cryptography
Q
What are the two broad categories of symmetric key cryptography?
AA. Transposition and substitution
BB. Classical and modern
CC. Stream and block
DD. Classical and block
Correct Answer:
B. B. Classical and modern
Explanation:
Symmetric key cryptography has two types; classical and modern. Classical cryptography again divided into two types; transposition and substitution. Modern cryptography is of two types; stream cipher and block cipher.
