When IPSec uses certificate authentication, it is necessary to verify the legitimacy of the peer certificate. Which of the following is not a factor that needs to be considered to verify the legitimacy of the certificate?

When IPSec uses certificate authentication, it is necessary to verify the legitimacy of the peer certificate. Which of the following is not a factor that needs to be considered to verify the legitimacy of the certificate?
A . Whether the certificate is applied for in the same way
B . Whether the certificate is within the validity period
C . Whether the certificate is located in the CRL repository
D . Whether the certificate is issued by the same CA

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Answer: D