EX188 Registry And Security Practice Question
An organization mandates that all container images produced internally must be signed using local GPG keys before being pushed to the production registry. Which tool and configuration file must be used to enforce that Podman rejects unsigned images during a pull operation?
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
✓
/etc/containers/policy.json
To enforce signature verification on pull, the policy file /etc/containers/policy.json must be updated to specify 'reject' by default and configure a 'transport' and 'signedBy' requirement for specific registry scopes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
/etc/containers/policy.json
Why this is correct
The policy.json file defines signature verification policies, allowing administrators to reject unsigned images.
- ✗
/etc/containers/registries.conf
Why it's wrong here
registries.conf manages registry endpoints and search paths, not signature policies.
- ✗
/var/lib/shared/sigstore
Why it's wrong here
This is a directory where signatures are stored, not the configuration file that enforces the security policy.
- ✗
~/.config/containers/auth.json
Why it's wrong here
auth.json stores authentication credentials, not cryptographic signature verification rules.
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.