EC-Council
312-50V9 · Question #130
312-50V9 Question #130: Real Exam Question with Answer & Explanation
The correct answer is C: Bulk data encryption. AES is a symmetric block cipher standardized by NIST and is the primary algorithm used for encrypting large volumes of data efficiently and securely.
Question
Advanced encryption standard is an algorithm used for which of the following?
Options
- AData integrity
- BKey discovery
- CBulk data encryption
- DKey recovery
Explanation
AES is a symmetric block cipher standardized by NIST and is the primary algorithm used for encrypting large volumes of data efficiently and securely.
Common mistakes.
- A. Data integrity is provided by hashing algorithms such as SHA-256 or HMAC constructs, not by AES, which is a confidentiality-focused encryption algorithm.
- B. Key discovery is not a defined cryptographic function - AES neither generates nor recovers keys; key management is handled by separate key exchange protocols such as Diffie-Hellman.
- D. Key recovery refers to mechanisms for retrieving lost encryption keys and is a key management concern, not a function performed by AES itself.
Concept tested. AES symmetric cipher role in bulk data encryption
Reference. https://csrc.nist.gov/publications/detail/fips/197/final
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