To increase security, MD5 authentication is added to an OSPF virtual link. Company security policies dictate that all passwords must be changed after 90 days. What will be the effect on the OSPF network of changing the MD5 key?
A.
A second MD5-authenticated virtual link should be created.Once that is operational, the old virtual link can be removed.
B.
Once a MD5 key is configured a hash is created.For security purposes, this hash can only be removed by clearing the MD5 configuration and resetting the OSPF adjacency.
C.
A new MD5 key can be configured after removing the old one.This will momentarily disable MD5 authentication until the new key is learned in updated LSAs.
D.
if a second MD5 key is configured OSPF will authenticated both keys allowing the first key to be removed with no effect on OSPF
E.
if a new MD5 key is configured using the same key-id, it automatically replaces the existing one with no effect on OSPF