問題文
An engineer finds that after a certificate replacement, some clients connect and others fail with a validation error. The new certificate is valid and issued by the same authority as before. What is the most likely cause?
選択肢
- The certificate's validity period has not started yet on some clients, because their clocks are ahead of the issuing time and the certificate will therefore be accepted only after those clients' clocks pass the start of the validity window.
- The revocation list is unreachable from some clients.
- The new certificate uses a different key algorithm.
- The server is not sending the full chain, so clients that already hold the intermediate succeed while clients that do not cannot build it.