GH-200 Microsoft GitHub Actions Exam Free Practice Exam Questions (2026 Updated)

GitHub-hosted runners have a limit on the number of concurrent workflows (typically 20 for free-tier accounts and 5 for enterprise). If your organization needs to run more workflows simultaneously, you would need to use self-hosted runners to increase the available concurrency.

Self-hosted runners allow you to configure specialized hardware or software setups that are necessary for certain workflows. GitHub-hosted runners may not have access to custom hardware configurations like GPUs or other specialized resources, so self-hosted runners are required in such cases.

To target a specific self-hosted runner, the job must use runs-on with labels that match that runner. A self-hosted runner normally has the self-hosted label plus default labels and any custom labels you assign. Since the runner is labeled runner1, the workflow should specify both self-hosted and runner1: runs-on: [self-hosted, runner1]. GitHub Actions will then route the job only to a self-hosted runner matching all specified labels. Option A targets a different custom label. Option B is malformed and also mixes a self-hosted label with a GitHub-hosted runner label. Option D targets any self-hosted runner, not specifically runner1. GitHub documents that an array of runs-on labels requires a runner matching all listed labels.

You can define environment variables for the entire workflow by using the env key at the top level of the workflow file. These environment variables will be available to all jobs and steps within the workflow.

Environment variables can also be set within the run attribute of a job step, and these variables will be scoped only to that specific step.

You can set environment variables for specific steps within a job by using jobs. < job_id > .steps[*].env, which allows you to define variables that will only be available to that step.

If a workflow depends on an external service that is down, disabling the workflow temporarily will prevent it from running and sending requests to the service, thus avoiding failed requests or unnecessary retries.

If a workflow is causing a negative impact on external services by generating too many requests or incorrect data due to a bug, temporarily disabling the workflow will stop this behavior while the issue is fixed.

You can enable specific actions for the organization by identifying them and providing version control, ensuring only trusted versions are used in workflows.

GitHub-verified actions can be enabled at the enterprise level, providing an extra layer of security by ensuring that only trusted actions are available to workflows.

Actions can be published to an internal marketplace, allowing organizations to share reusable actions securely within their enterprise without exposing them to the public.

The correct native GitHub Actions method for passing files between jobs in the same workflow is artifact storage. Workflow artifacts are designed to persist files produced by one job so they can be downloaded and used by another job later in the workflow. Job outputs are better suited for passing small values, strings, IDs, flags, or metadata between jobs, not full files. Caching is intended to speed up repeated workflow runs by reusing dependencies or build outputs; it is not the proper mechanism for transferring job-produced files. An external blob store can work architecturally, but it is not the native GitHub Actions method. Therefore, artifact storage is the best and most exam-aligned answer for passing files between jobs.

A composite action allows you to bundle multiple steps into a single reusable action within a workflow. It is composed of multiple run steps or other actions and can be reused across workflows, making it the perfect choice for bundling a series of steps.

The best design is to use environment-scoped secrets with the same secret name, such as DEPLOY_KEY, in separate environments such as DevCloud and TestCloud. This lets the same reusable deployment logic reference one consistent secret name while the selected environment supplies the correct value. Option A is invalid because GitHub secret names should not be designed around dotted property access, and reusable workflows should not parse secret names dynamically. Option C introduces unnecessary marketplace dependency and weak secret handling. Option D is also wrong because GitHub secrets are opaque strings; ${{ secrets.DEPLOY_KEY.DevCloud }} is not valid secret property access. Reusable workflows can define and receive named secrets through the secrets mapping.

The key is required because it uniquely identifies the cache. It is used to store and retrieve cached data. When creating or restoring a cache, you need to define a key that will be used to identify the cache.

The path is the file path on the runner that you want to cache. This is where the cached files or dependencies are located and should be specified to tell GitHub where to store or retrieve the cache from.

The provided event trigger block specifies two types of events:

For issues: the workflow triggers on opened or edited issues.

For issue_comment: the workflow triggers when an issue comment is created.

This configuration ensures the workflow will run when either an issue is opened or edited, or an issue comment is created.