CIS MISC ECESv2_Practice Questions

How did the ATBASH cipher work? a. By shifting each letter a certain number of spaces b. By Multi alphabet substitution c. By rotating text a given number of spaces d. By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes Y, etc.) 2. DES has a key space of what? a. 2 128 b. 2192 c. 2 56 d. 264 3. Which of the following are valid key sizes for AES (choose three)? a. 56 b. 64 c. 128 d. 192 e. 256 f. 512 EC-Council Certified Encryption Specialist Copyright © by EC-Council All Rights Reserved. Reproduction is Strictly Prohibited. 4. Which of the following algorithms uses three different keys to encrypt the plain text? a. AES b. 3DES c. Blowfish d. Skipjack 5. Which of the following is a block cipher? a. AES b. RC4 c. DH d. RSA 6. Which of the following i