Drag a concept onto its matching description — or click a concept then click the description.
Concepts
Matches
Compute resource to run jobs
Logical boundary for pipeline phases
Sequence of steps on a single agent
Atomic build or deployment action
AZ-400 Pipeline Practice Question
Match each Azure Pipeline concept to its definition.
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
✓
Pipeline: A collection of stages that defines the CI/CD process.
The correct matches are: A: Pipeline → 'A collection of stages that defines the CI/CD process' (correct); B: Stage → 'A logical boundary in the pipeline used to group jobs' (correct); C: Job → 'A unit of work that runs on an agent' (correct); D: Task → 'A single operation to perform in a job' (correct). E is incorrect because Pipeline is not a logical boundary; that definition belongs to Stage. F is incorrect because Stage is not a collection of stages; that definition belongs to Pipeline. The most common confusion is swapping the definitions of Pipeline and Stage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Pipeline: A collection of stages that defines the CI/CD process.
Why this is correct
A pipeline is the highest-level resource in Azure Pipelines, defined in YAML or classic UI, that encapsulates the entire CI/CD workflow. It contains stages that group jobs and tasks, and it controls triggers, variables, and artifact publishing. The pipeline as a whole moves code from commit through build, test, and deployment.
- ✓
Stage: A logical boundary in the pipeline used to group jobs.
Why this is correct
A stage is a logical boundary inside a pipeline that groups related jobs into a named phase, such as Build, Test, or Deploy to Production. Stages can have conditional execution, approval checks, and deployment strategies, and they run sequentially unless a dependency is defined. This grouping lets teams add security checkpoints between environments.
- ✓
Job: A unit of work that runs on an agent.
Why this is correct
A job is a unit of work that runs on a single agent (or within an agent pool) and contains an ordered sequence of tasks executing sequentially in the same workspace. Jobs can also be parallelized using a strategy or matrix, but each job remains a discrete execution unit assigned to one agent.
- ✓
Task: A single operation to perform in a job.
Why this is correct
A task is the smallest unit of work in a pipeline, executed as a single step within a job's ordered sequence. Each task is a packaged script or built-in action with defined inputs, and it either succeeds or fails, immediately affecting the job's outcome. Examples include 'Command line', 'Copy Files', and 'Publish Pipeline Artifact' tasks.
- ✗
Pipeline: A logical boundary in the pipeline used to group jobs.
Why it's wrong here
This reverses the hierarchy. The definition of a logical boundary used to group jobs actually describes a stage, not a pipeline. A pipeline is the top-level container made up of stages, not the boundary that groups jobs.
- ✗
Stage: A collection of stages that defines the CI/CD process.
Why it's wrong here
This also reverses the hierarchy. A stage is a logical grouping of jobs (e.g., Build, Test, Deploy), while a pipeline is the top-level collection of stages that defines the entire CI/CD process. The description 'a collection of stages' defines a pipeline, not a stage.
Go deeper
Related to this question
Learn chapter
Introduction to DevOps and Azure DevOps
Key term
Task
A Task in Azure DevOps is a predefined, reusable step that performs a specific action during a build or release pipeline, like compiling code or running tests.
Key term
Stage
A stage is a discrete phase in a software development or deployment pipeline where code is built, tested, integrated, or released in a controlled environment.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-400 practice question is part of Courseiva's free Microsoft 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 AZ-400 exam.