1. DES follows a) Hash Algorithm b) Caesars Cipher c) Feistel Cipher Structure d) SP Networks AnswerAnswer: c [Reason:] DES follows Feistel Cipher Structure. 2. The DES Algorithm Cipher System consists of ____________rounds (iterations) each with a round key a) 12 b) 18 c) 9 d) 16 AnswerAnswer: d [Reason:] The DES Algorithm Cipher System…