Which of the following defines format for Public Key Infrastructure?
2025
Which of the following defines format for Public Key Infrastructure?
- A.
X.25
- B.
X.509
- C.
IEEE 802.11
- D.
IEEE 802.3
Attempted by 154 students.
Show answer & explanation
Correct answer: B
The question asks for the specific standard that defines the format used within Public Key Infrastructure systems. X.509 is the internationally recognized ITU-T standard specifically designed for managing digital certificates and authentication within PKI environments. In contrast, X.25 is a packet-switching protocol, while IEEE 802.11 and 802.3 define wireless and wired networking standards respectively.