CDM Practice Test

The CDM certification from GSDC evaluates technical and operational capabilities across modern software delivery environments. There are no mandatory prerequisites, though DevOps experience or foundational knowledge is recommended. This page provides free practice questions, exam specifications, and targeted topic reviews to help candidates prepare. You can explore questions covering continuous integration, infrastructure automation, deployment, and monitoring to assess your understanding before taking the official examination.

CDM Exam at a Glance

What changed for CDM in 2026

• Oct 25, 2026: Eligibility changed to No mandatory prerequisites; DevOps experience recommended (previously No mandatory prerequisites).^[1]

What the CDM is and how it works

According to GSDC, “Prior work experience or foundational knowledge in DevOps practices is recommended”^[1]

The CDM credential from GSDC assesses proficiency in DevOps principles, practices, and collaborative tooling. The program aims to validate an individual's capability to align software development cycles with operational workflows. Candidates do not face mandatory prerequisites before sitting for the test, although prior work experience or foundational knowledge in DevOps practices is recommended by GSDC.

The examination consists of 40 multiple-choice questions. Test takers have a time limit of 90 minutes to finish all questions. To earn the credential, candidates must achieve a passing score of 65%. If an applicant does not attain the required passing mark on an initial attempt, the registration includes 1 free retake. Following the evaluation, the official certificate is emailed within 2 business days to successful candidates. Once awarded, the credential remains valid for 5 years.

Because testing environments, exam delivery policies, and remote proctoring procedures can vary or undergo updates, candidates should check the official GSDC website for current administrative guidance before scheduling their testing session.

Worked examples: how to reason through CDM questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: What is the MOST important factor when selecting assessment tools for CDM certification work?

1. The cost of the assessment tool
2. Validity, reliability, and appropriateness for the specific context
3. How quickly the tool can be administered
4. Personal familiarity with the tool

Answer: B. Validity, reliability, and appropriateness for the specific context

Explanation:

Option B is correct because assessment tools must demonstrate validity, reliability, and contextual fit to produce meaningful and defensible evaluation results. Option A is incorrect because cost is a practical constraint rather than the primary factor governing measurement quality. Option C is incorrect because administration speed does not substitute for accuracy or sound evaluation design. Option D is incorrect because personal familiarity reflects subjective convenience rather than objective suitability. The general rule is to select evaluation instruments based on sound measurement properties and alignment with target objectives rather than operational convenience or expense.

Example 2

Question: When new equipment is introduced in Certified DevOps Master, what is REQUIRED before staff use it?

1. A brief verbal overview
2. Formal training, competency verification, and documentation
3. Watching a colleague use it once
4. Reading the manual independently

Answer: B. Formal training, competency verification, and documentation

Explanation:

Option B is correct because introducing new equipment requires formal instruction, verification of operational competence, and recorded documentation to ensure safe, repeatable usage across technical environments. Option A is incorrect because a brief verbal overview lacks the depth and verification needed to ensure safe handling. Option C is incorrect because informal observation does not confirm that an individual possesses necessary operational skills. Option D is incorrect because self-directed manual reading provides no objective validation of operational competence. The general rule is that operational changes require structured preparation, verified ability, and auditable records before independent execution.

Example 3

Question: Which statement BEST describes the relationship between Certified DevOps Master certification and industry evolution?

1. Certification requirements never change
2. Requirements evolve periodically to reflect advances in knowledge and practice
3. Changes only occur when government mandates them
4. Requirements become less stringent over time

Answer: B. Requirements evolve periodically to reflect advances in knowledge and practice

Explanation:

Option B is correct because technical certifications must periodically update their standards to incorporate emerging tools, collaborative workflows, and evolving industry standards. Option A is incorrect because static requirements would cause credentials to become obsolete as technologies advance. Option C is incorrect because professional bodies adjust standards based on technological progress and practitioner practices, not merely regulatory directives. Option D is incorrect because certification criteria aim to reflect modern technical complexity rather than reducing rigorous expectations. The general rule is that professional credentials evolve alongside industry practices to maintain relevance and technical validity.

How to use these practice tests

To prepare effectively for the CDM examination, combine official documentation review with topic-focused practice. Begin by assessing core cultural and delivery concepts using CDM DevOps Principles & Culture alongside CDM Continuous Integration & Continuous Delivery. Reviewing these topics establishes a solid grasp of automation pipelines and collaborative workflows.

Next, focus on operational execution and infrastructure management. Work through CDM Infrastructure Automation & Configuration Management, followed by CDM Cloud & Containerization and CDM Deployment & Operations. Concurrently, review CDM Security & Compliance (DevSecOps) and CDM Monitoring, Logging & Incident Response to address observability and governance.

As test day approaches, simulate pacing by answering question sets within the official 90 minutes limit. Make sure you consistently exceed the 65% passing score across 40 questions before sitting for the evaluation.

Sources & last verified

1. GSDC — number of questions, time limit, passing score, retake policy (official source). “Exam Questions 40” Verified Oct 25, 2026.
2. GSDC — score release (official source). “Certificates are emailed within 2 business days.” Verified Oct 25, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.