Technical interview guide

Zero Trust Architecture

Verifying every request explicitly instead of trusting anything by network location.

Read: 29 min
Practice MCQs: 25
Interview QA: 25
Edition: v4
Editorial status: Reviewed
Relevant for: Security Architect

Scope: NIST SP 800-207; NIST SP 800-207A; NIST SP 1800-35 final (June 2025); CISA Zero Trust Maturity Model 2.0.

Interview QA

Treat each question like a live interview question: answer out loud first (structure, assumptions, tradeoffs), then open the model answer to spot gaps and rehearse a tighter follow-up.

Curated: 2026-10-05 · Written: 2026-10-03 · Reviewed: 2026-10-03

QA-1

Explain zero trust architecture to an engineering team.

QA-2

Design a zero trust migration program for a hybrid enterprise.

QA-3

Design the policy decision, administration, and enforcement architecture.

QA-4

Create a zero trust access policy for a sensitive production database.

QA-5

Design workload identity and service-to-service authorization across multiple clouds.

QA-6

Use microsegmentation without recreating small trusted perimeters.

QA-7

Incorporate device posture into access decisions.

QA-8

Design zero trust access for unmanaged personal devices.

QA-9

Migrate a legacy application that supports only shared passwords and network allowlists.

QA-10

Design partner and supplier access under zero trust principles.

QA-11

Choose fail-open, fail-closed, and cached behavior for policy outages.

QA-12

Secure the zero trust policy and identity control plane itself.

QA-13

Implement continuous access evaluation and session revocation.

QA-14

Apply zero trust principles to data access and exfiltration risk.

QA-15

Design visibility and analytics for a zero trust architecture.

QA-16

Test zero trust policies and enforcement before rollout.

QA-17

Operate policy as code safely at enterprise scale.

QA-18

Design and govern emergency break-glass access.

QA-19

Use CISA's maturity model without turning it into checkbox compliance.

QA-20

Define meaningful zero trust architecture metrics.

QA-21

Threat-model a zero trust architecture.

QA-22

Respond to a compromised zero trust policy engine or identity issuer.

QA-23

Resolve conflicting authorization policies across enforcement layers.

QA-24

Review a vendor's claim that its product delivers zero trust.

QA-25