EC-Council 212-81 EC-Council Certified Encryption Specialist (ECES) Online Training
EC-Council 212-81 Online Training
The questions for 212-81 were last updated at Apr 22,2024.
- Exam Code: 212-81
- Exam Name: EC-Council Certified Encryption Specialist (ECES)
- Certification Provider: EC-Council
- Latest update: Apr 22,2024
Which of the following is a type of encryption that has two different keys. One key can encrypt the message and the other key can only decrypt it?
- A . Block cipher
- B . Asymmetric
- C . Symmetric
- D . Stream cipher
The reverse process from encoding – converting the encoded message back into its plaintext format.
- A . Substitution
- B . Whitening
- C . Encoding
- D . Decoding
Which of the following are valid key sizes for AES (choose three)?
- A . 192
- B . 56
- C . 256
- D . 128
- E . 512
- F . 64
A non-secret binary vector used as the initializing input algorithm for encryption of a plaintext block sequence to increase security by introducing additional cryptographic variance.
- A . IV
- B . Salt
- C . L2TP
- D . Nonce
What is Kerchoff’s principle?
- A . A minimum of 15 rounds is needed for a Feistel cipher to be secure
- B . Only the key needs to be secret, not the actual algorithm
- C . Both algorithm and key should be kept secret
- D . A minimum key size of 256 bits is necessary for security
Protocol suite provides a method of setting up a secure channel for protected data exchange between two devices.
- A . CLR
- B . OCSP
- C . TLS
- D . IPSec
Which of the following algorithms uses three different keys to encrypt the plain text?
- A . Skipjack
- B . AES
- C . Blowfish
- D . 3DES
Encryption of the same plain text with the same key results in the same cipher text. Use of an IV that is XORed with the first block of plain text solves this problem.
- A . CFB
- B . GOST
- C . ECB
- D . RC4
How did the ATBASH cipher work?
- A . By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes Y, etc.)
- B . By rotating text a given number of spaces
- C . By Multi alphabet substitution
- D . By shifting each letter a certain number of spaces
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