Which of the following would best describe certificate path validation?

A.
Verification of the validity of all certificates of the certificate chain to the root certificate

B.
Verification of the integrity of the associated root certificate

C.
Verification of the integrity of the concerned private key

D.
Verification of the revocation status of the concerned certificate

Explanation:
The certification path validation algorithm is the algorithm which verifies that a given certificate path is valid
under a given public key infrastructure (PKI). A path starts with the Subject certificate and proceeds through a
number of intermediate certificates up to a trusted root certificate, typically issued by a trusted Certification
Authority (CA).
Path validation is necessary for a relying party to make an informed trust decision when presented with any
certificate that is not already explicitly trusted. For example, in a hierarchical PKI, a certificate chain starting with
a web server certificate might lead to a small CA, then to an intermediate CA, then to a large CA whose trust
anchor is present in the relying party’s web browser.
Incorrect Answers:
B: Certificate path validation is not verification of the integrity of the associated root certificate.
C: Certificate path validation is not verification of the integrity of the concerned private key.
D: Certificate path validation is not verification of the revocation status of the concerned certificate; this is a
Certificate Revocation Check.

https://en.wikipedia.org/wiki/Certification_path_validation_algorithm