CompTIA Network+ Exam Review

Category - Networking

Which of the following protocols provides best encryption in an IPsec VPN?
  1. HMAC-MD5
  2. DES
  3. 3DES
  4. AES
Explanation
Answer - D - AES is the protocol that provides encryption in an IPsec VPN.

Key Takeaway: AES, or Advanced Encryption Standard, is an encryption scheme used as a replacement for DES. It is a symmetric-block cipher that can be used with 128, 192, and 256-bit keys. AES is the best among the ones specified, because it is both cryptographically strong and efficient to implement.
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