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EX188 practice examsIn development

Red Hat Certified Specialist in Containers

Red Hat · intermediate · 2 hours

In developmentThis course is still being brought to our full standard. The questions and notes are usable, but they have not yet been checked line by line against the vendor’s own training.

Containers on the Red Hat toolchain: isolated host processes rather than virtual machines, daemonless and rootless Podman with Buildah and Skopeo, images as cached layers where a digest is immutable and a tag is not, and Containerfile ordering that decides whether a build is fast; then running and limiting containers, volumes with the SELinux relabel option behind the permission error that looks like something else, published ports and user-defined networks, pods and generated systemd units.

What you get

180practice questions
3full papers of 60
2course chapters · 13 minutes
100%answers explained

Papers are cut from the bank and weighted like the real exam, and no question appears in two of them. Every wrong answer comes back on later days until you have it right.

What the exam covers

The domains our question bank is built on. We have not yet transcribed this vendor’s own outline for this exam.

Container fundamentals and building imagesNot published
Running containers, storage, networking and compositionNot published

Two sample questions

Two of the 180, with the answer and the explanation.

1. What does a restart policy of always do?

  1. Brings the container back only after a failure
  2. Brings the container back once per boot
  3. Brings the container back on a schedule
  4. Brings the container back whenever it stops — correct

Why: On-failure restarts only when the exit code is non-zero.

2. What does ENTRYPOINT define?

  1. The fixed executable — correct
  2. The default arguments
  3. The exposed port
  4. The base image

Why: ENTRYPOINT sets the executable that always runs; CMD gives default arguments.

The real EX188 exam

Length2 hours
QuestionsNone. Every Red Hat exam is performance based: you do the work on live systems and there are no multiple-choice questions.
Pass mark210 of 300
PricePurchased per attempt, or included in a Red Hat Learning Subscription
Recommended before you sit itNone enforced. Linux command line skills at system administrator level are assumed.
Valid for3 years

Exam facts as published by Red Hat; always check the vendor’s page before you book.

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