OSPFv2 supports which two types of authentication? (Choose two.)

ITExamAnswers Editorial Team Last Updated: Jun 29, 2026

IT Exam Items Repository › Category: CCNP ENARSI v9 › OSPFv2 supports which two types of authentication? (Choose two.)

OSPFv2 supports which two types of authentication? (Choose two.)

AH
simple password
AES
SHA-256
MD5

Explanation: OSPFv2 supports three types of authentication: Type 0 (No authentication), Type 1 (Simple password/cleartext), and Type 2 (Cryptographic, which traditionally uses MD5). While newer versions also support SHA, MD5 and simple passwords are the primary methods defined in the protocol.

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