Which cipher rearranges letters of the plaintext to form the ciphertext?

Which cipher rearranges letters of the plaintext to form the ciphertext?

• A. Encryption
• B. Substitution Cipher
• C. Cipher Text
• D. Transposition Cipher

Answer: (D)

Rearranging letters is what a transposition cipher does. It keeps the same characters but changes their order according to a rule. For example, reversing the letters of HELLO gives OLLEH, which shows the letters are the same, just in a different arrangement. Substitution ciphers, on the other hand, replace each letter with a different letter or symbol, so the actual characters change, not just their order. Encryption is the overall process of turning plaintext into ciphertext, and ciphertext is the resulting text, not the method. So the technique that rearranges letters to form the ciphertext is the transposition cipher.

Rearranging letters is what a transposition cipher does. It keeps the same characters but changes their order according to a rule. For example, reversing the letters of HELLO gives OLLEH, which shows the letters are the same, just in a different arrangement. Substitution ciphers, on the other hand, replace each letter with a different letter or symbol, so the actual characters change, not just their order. Encryption is the overall process of turning plaintext into ciphertext, and ciphertext is the resulting text, not the method. So the technique that rearranges letters to form the ciphertext is the transposition cipher.