Final answer:
The subject of this question is Computers and Technology. When verifying a digital certificate, it is important to check if the subject name in the certificate matches the URL, if the certificate has expired, and if the client trusts the issuing CA.
Step-by-step explanation:
The subject of this question is Computers and Technology as it pertains to digital certificates and internet security.
When verifying a digital certificate, it is important to check if the subject name in the certificate matches the URL. This ensures that the certificate is issued to the correct entity and is not being used for fraudulent purposes.
Furthermore, it is crucial to determine if the certificate has expired. An expired certificate may indicate that the website's security is outdated or compromised.
Lastly, it is essential to check if the client trusts the issuing Certification Authority (CA). The CA's reputation and trustworthiness play a significant role in determining the reliability of the certificate.