ISC Identity And Access Management Architecture Practice Question
Which TWO components are critical for an identity-centric Zero Trust architecture?
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
✓
Policy Decision Point (PDP).
A central Identity Provider (IdP) and a Policy Decision Point (PDP) are the structural heart of a ZT identity architecture.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A standard network firewall.
Why it's wrong here
Network firewalls are not sufficient for ZT identity enforcement.
- ✓
Policy Decision Point (PDP).
Why this is correct
The brain that makes access decisions.
- ✗
Public IP address allow-listing.
Why it's wrong here
IP-based security is insufficient for ZT.
- ✓
Centralized Identity Provider (IdP).
Why this is correct
The source of truth for identities.
- ✗
A localized directory service without replication.
Why it's wrong here
Local, non-replicated directories are not scalable or resilient.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ISC exam.