Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?

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Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?

transform
stream
hash
symmetric
block

Explanation: Block ciphers transform a fixed-length block of plaintext into a block of ciphertext. To decrypt the ciphertext, the same secret key to encrypt is used in reverse.

Exam with this question: Cybersecurity Essentials Chapter 4 Quiz Answers