COMPUTER NETWORKING

Detailed explanation-1: -A certificate authority (CA) is a trusted entity that issues Secure Sockets Layer (SSL) certificates. These digital certificates are data files used to cryptographically link an entity with a public key. Web browsers use them to authenticate content sent from web servers, ensuring trust in content delivered online.

Detailed explanation-2: -Digital certificates contain a copy of a public key from the certificate holder, which needs to be matched to a corresponding private key to verify it is real. A public key certificate is issued by certificate authorities (CAs), which sign certificates to verify the identity of the requesting device or user.

Detailed explanation-3: -A certificate authority that verifies the website and issues the digital certificate. A digital signature that proves the SSL certificate was issued by the trusted certificate authority. A public key that your browser uses to encrypt data sent to the website.