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What is a characteristic of using the Electronic Code Book mode of DES encryption?
Correct Answer: A
Explanation/Reference: Explanation: With Electronic Code Book (ECB) Mode, a 64-bit data block is entered into the algorithm with a key, and a block of ciphertext is produced. The same block of ciphertext will always result from a given block of plaintext and a given key. Incorrect Answers: B: This option refers to Cipher Block Chaining (CBC). C: This option is not a characteristic of using the Electronic Code Book mode of DES encryption, as ECB allows for ciphertext to be produced from a given block of plaintext and a given key. D: This option refers to Cipher Block Chaining (CBC). References: Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 800-807