COMPUTER FUNDAMENTALS

COMPUTER NETWORKS AND COMMUNICATIONS

NETWORK SECURITY AND CYBERSECURITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following accurately describes the trust model of certificate authorities?
A
An Internet user must trust that the public key they use is accurate
B
A list of trusted certificate authorities is created by a browser over time.
C
A certificate authority trusts a public key if it has been approved by a different party.
D
A certificate authority is trusted by the owner of the certificate and the party relying on the certificate.
Explanation: 

Detailed explanation-1: -In the hierarchical trust model everybody’s certificate is issued by a third party called Certificate Authority (CA). If one trust the CA then he automatically trust the certificates that CA issues. This is a simplified form of hierarchical trust model.

Detailed explanation-2: -A certificate authority trusts a public key if it has been approved by a different party. A certificate authority is trusted by the owner of the certificate and the party relying on the certificate.

Detailed explanation-3: -A certificate authority (CA) is a trusted organization that issues digital certificates for websites and other entities.

Detailed explanation-4: -The browser examines each certificate in the chain that terminates with a self-signed Trusted Root Certificate of the Certification Authority. This would be in the local certificate store.

There is 1 question to complete.