Which two statements regarding OSPFv2 or OSPFv3 authentication are correct? (Choose two.)
A.
OSPFv2 supports MD5 authentication.
B.
OSPFv2 supports MD5 or SHA authentication.
C.
OSPFv2 relies on the native security stack that uses IPsec.
D.
OSPFv3 relies on the native security stack that uses IPsec.
Explanation:
A, D
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OSPFv3 does not have a built-in authentication method and relies on the IP Security (IPsec) suite to provide this functionality. IPsec provides such functionality as authentication of origin, data integrity, confidentiality, replay protection, and nonrepudiation of source. You can use IPsec to secure specific OSPFv3 interfaces and protect OSPFv3 virtual links.
A & D is correct.
OSPFv2 support MD5 & ipsec
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