Attempting to crack encryption by simply trying as many randomly generated keys as possible is referred to as what?

Frank is trying to break into an encrypted file… He is attempting all the possible keys that could be used for this algorithm.

Attempting to crack encryption by simply trying as many randomly generated keys as possible is referred to as what?
A . Rainbow table
B. Frequency analysis
C. Brute force
D. Kasiski

Answer: C

Explanation:

Brute force

https://en.wikipedia.org/wiki/Brute-force_attack Brute-force attack consists of an attacker submitting many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. Alternatively, the attacker can attempt to guess the key which is typically created from the password using a key derivation function. This is known as an exhaustive key search.