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Which of the following has Sara selected?

A network stream needs to be encrypted. Sara, the network administrator, has selected a cipher which will
encrypt 8 bits at a time before sending the data across the network. Which of the following has Sara selected?

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A.
Block cipher

B.
Stream cipher

C.
CRC

D.
Hashing algorithm

Explanation:
With a block cipher the algorithm works on chunks of data—encrypting one and then moving to the next.
Example: Blowfish is an encryption system that performs a 64-bit block cipher at very fast speeds.

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