350-701 Security Concepts Practice Question
A network administrator is configuring PKI for secure communications. Which TWO components are essential for a public key infrastructure? (Choose two.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Certificate Authority (CA)
PKI relies on a Certificate Authority (CA) to issue certificates and a CRL or OCSP to check revocation. Private keys are part of the key pair, but the PKI components are CA and revocation mechanism.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Certificate Authority (CA)
Why this is correct
CA is the trusted entity that issues digital certificates.
- ✗
Private key of the end user
Why it's wrong here
Private keys are not a PKI component; they are part of the key pair.
- ✓
Certificate revocation list (CRL) or OCSP responder
Why this is correct
Revocation checking is essential to verify certificate validity.
- ✗
Hashing function
Why it's wrong here
Hashing is used in certificates but is not a PKI component.
- ✗
Symmetric encryption algorithm
Why it's wrong here
Symmetric encryption is not a PKI component.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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