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DCA · Question #93
DCA Question #93: Real Exam Question with Answer & Explanation
The correct answer is A: Yes. Docker Trusted Registry (DTR) allows administrators to configure repositories to make image tags immutable.
Submitted by stefanr· Apr 18, 2026Image Creation, Management, and Registry
Question
In Docker Trusted Registry, is this how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository? Solution: Use the DTR web Ul to make all tags in the repository immutable.
Options
- AYes
- BNo
Explanation
Docker Trusted Registry (DTR) allows administrators to configure repositories to make image tags immutable.
Common mistakes.
- B. DTR offers a specific setting in its web UI to enforce tag immutability, which prevents existing image tags from being overwritten.
Concept tested. DTR immutable tags
Reference. https://docs.docker.com/datacenter/dtr/2.7/guides/admin/configure/set-tag-immutability/
Topics
#Docker Trusted Registry#Image Immutability#Image Management#Repository Configuration
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