← GH-200 overviewGitHub Actions / STUDY TOOLS
Exam coverage map
The January 2026 exam outline mentions YAML merge mappings (<<). The current GitHub reuse documentation explicitly documents anchors and aliases; this guide explains merge semantics separately and does not assume every YAML feature is accepted by every Actions runtime. Validate actual workflows against current platform support.
Published objectives
| Objective |
Revision topic |
| 1A · Workflow triggers |
01 Events, Inputs and Workflow Trust |
| 1B · Workflow structure and expressions |
02 Jobs, Matrices and Evaluation Context |
| 1C · Outputs, artifacts and execution |
03 Outputs, Artifacts, Caches and Summaries |
| 2A · Diagnose workflow behavior |
04 Debugging Runs and Controlling Cost |
| 2B · Logs and artifacts |
03 Outputs, Artifacts, Caches and Summaries, 04 Debugging Runs and Controlling Cost |
| 2C · Templates and reusable workflows |
05 Reusable Workflows, Templates and Enterprise Policy |
| 3A · Custom action types |
06 Custom Actions, Metadata and Releases |
| 3B · Action metadata and commands |
06 Custom Actions, Metadata and Releases |
| 3C · Distribution and versioning |
06 Custom Actions, Metadata and Releases |
| 4A · Govern reusable automation |
05 Reusable Workflows, Templates and Enterprise Policy, 07 Hosted and Self-Hosted Runner Operations |
| 4B · Manage runners |
07 Hosted and Self-Hosted Runner Operations |
| 4C · Secrets and variables |
08 Secrets, OIDC and Artifact Trust |
| 5A · Security controls |
08 Secrets, OIDC and Artifact Trust |
| 5B · Performance and cost |
03 Outputs, Artifacts, Caches and Summaries, 04 Debugging Runs and Controlling Cost, 07 Hosted and Self-Hosted Runner Operations |
