EX188 Registry And Security Practice Question
Which THREE mechanisms are part of Podman's image signature verification framework on RHEL 9? (Choose three.)
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
✓
Signature storage backends (such as sigstore) where detached signatures are stored.
Image verification relies on policy.json, signature storage transports (sigstore), and public keys.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Signature storage backends (such as sigstore) where detached signatures are stored.
Why this is correct
Signatures are stored in independent sigstore locations or container registries.
- ✗
Automatic kernel SELinux policy compilation during image pull.
Why it's wrong here
SELinux policies are not compiled during image signature verification.
- ✗
Built-in TLS client certificate authorities for registry TCP handshakes.
Why it's wrong here
TLS certificates secure transport encryption, whereas signature verification is cryptographic data validation.
- ✓
The policy configuration file (/etc/containers/policy.json) that defines required verification checks.
Why this is correct
policy.json is the core file defining signature requirements.
- ✓
GnuPG public key rings or signature verification keys used to validate cryptographic signatures.
Why this is correct
Verification uses public keys associated with the signing entity.
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 Red Hat exam blueprint
This EX188 practice question is part of Courseiva's free Red Hat 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 EX188 exam.