Sim-Ex™ Practice Exams for CCST Cybersecurity: Practice questions

Block cipher

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Q9. Which of the following is true about block cipher? (Choose 2 best answers).

A. Here a cryptographic key and algorithm are applied to a block of data at once as a group rather than to one bit at a time.

B. Here a cryptographic key and algorithm are applied one bit at a time rather than to a block of data.

C. It is a port scanner

D. Blowfish algorithm uses block cipher.

Correct Answer: A,D


Block cipher derives its name from the fact that a block of data is taken at a time to cipher.

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