A cybersecurity company wants to prevent attackers from gaining information about its encrypted traffic patterns.

According to the CEH Cryptography module, strong symmetric encryption algorithms are essential for protecting data confidentiality and obscuring traffic content.

AES (Advanced Encryption Standard) is the industry-standard symmetric encryption algorithm approved by NIST and recommended by CEH for encrypting data in transit and at rest. AES provides strong resistance against cryptanalysis and prevents attackers from deriving meaningful information from encrypted traffic.

Option D is correct because AES is efficient, secure, and widely implemented.

Option A (HMAC) provides integrity and authentication, not encryption.

Option B (RSA) is computationally expensive and not suitable for bulk traffic encryption.

Option C (DES) is deprecated due to weak key length.

CEH materials clearly recommend AES over legacy algorithms.