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EC-COUNCIL 212-81 certification exam is ideal for professionals who are working in the field of IT security, including network administrators, security analysts, and security engineers. Certified Encryption Specialist certification is also suitable for individuals who are interested in pursuing a career in IT security and wish to demonstrate their expertise in encryption technologies. 212-81 exam is designed to test the candidate's practical skills and knowledge and is conducted online. Candidates are required to complete 50 multiple-choice questions within 90 minutes. 212-81 exam also includes scenario-based questions that test the candidate's ability to apply their knowledge to real-world situations. Overall, the EC-COUNCIL 212-81 certification exam is an excellent way for professionals to validate their skills and knowledge in encryption technologies and enhance their career prospects.

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EC-COUNCIL Certified Encryption Specialist Sample Questions (Q106-Q111):

NEW QUESTION # 106
Modern symmetric ciphers all make use of one or more s-boxes. Both Feistel and non-Feistel ciphers use these s-boxes. What is an s-box?

  • A. A black box for the algorithm implementation
  • B. Another name for the round function
  • C. A shifting box where input bits are shifted
  • D. A substitution box where input bits are replaced

Answer: D

Explanation:
Substitution box where input bits are replaced
https://en.wikipedia.org/wiki/S-box
In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the ciphertext - Shannon's property of confusion.


NEW QUESTION # 107
Which one of the following attempts to hide data in plain view?

  • A. Cryptography
  • B. Asymmetric cryptography
  • C. Steganography
  • D. Substitution

Answer: C

Explanation:
Steganography
https://en.wikipedia.org/wiki/Steganography
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography comes from Greek steganographia, which combines the words steganós , meaning "covered or concealed", and -graphia meaning "writing".


NEW QUESTION # 108
A 160-bit hash algorithm developed by Hans Dobbertin, Antoon Bosselaers, and Bart Preneel for which there are 128, 256 and 320-bit versions is called what?

  • A. FORK
  • B. MD5
  • C. SHA1
  • D. RIPEMD

Answer: D

Explanation:
RIPEMD
https://en.wikipedia.org/wiki/RIPEMD
RIPEMD (RIPE Message Digest) is a family of cryptographic hash functions developed in 1992 (the original RIPEMD) and 1996 (other variants). There are five functions in the family: RIPEMD, RIPEMD-128, RIPEMD-160, RIPEMD-256, and RIPEMD-320, of which RIPEMD-160 is the most common.
The original RIPEMD, as well as RIPEMD-128, is not considered secure because 128-bit result is too small and also (for the original RIPEMD) because of design weaknesses. The 256- and 320-bit versions of RIPEMD provide the same level of security as RIPEMD-128 and RIPEMD-160, respectively; they are designed for applications where the security level is sufficient but longer hash result is necessary.


NEW QUESTION # 109
A real time protocol for verifying certificates (and a newer method than CRL).

  • A. Public Key Infrastructure (PKI)
  • B. Registration Authority (RA)
  • C. Server-based Certificate Validation Protocol (SCVP)
  • D. Online Certificate Status Protocol (OCSP)

Answer: D

Explanation:
Online Certificate Status Protocol (OCSP)
https://en.wikipedia.org/wiki/Online_Certificate_Status_Protocol
The Online Certificate Status Protocol (OCSP) is an Internet protocol used for obtaining the revocation status of an X.509 digital certificate. It is described in RFC 6960 and is on the Internet standards track. It was created as an alternative to certificate revocation lists (CRL), specifically addressing certain problems associated with using CRLs in a public key infrastructure (PKI).
Incorrect answers:
Public Key Infrastructure (PKI) - set of roles, policies, hardware, software and procedures needed to create, manage, distribute, use, store and revoke digital certificates and manage public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for a range of network activities such as e-commerce, internet banking and confidential email. It is required for activities where simple passwords are an inadequate authentication method and more rigorous proof is required to confirm the identity of the parties involved in the communication and to validate the information being transferred.
Registration Authority (RA) - сomponent of PKI that validates the identity of an entity requesting a digital certificate.
Server-based Certificate Validation Protocol (SCVP) - Internet protocol for determining the path between an X.509 digital certificate and a trusted root (Delegated Path Discovery) and the validation of that path (Delegated Path Validation) according to a particular validation policy.


NEW QUESTION # 110
The reverse process from encoding - converting the encoded message back into its plaintext format.

  • A. Encoding
  • B. Whitening
  • C. Substitution
  • D. Decoding

Answer: D

Explanation:
Decoding
Decoding - reverse process from encoding,converting the encoded message back into its plaintext format.


NEW QUESTION # 111
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