Cyber Fundamentals Block 1 Practice Exam 2026 – Complete Study Guide

Security Technical Implementation Guides, or STIGs, define the exact security configuration baselines that DoD systems—across networks, servers, and devices—should follow. They provide the detailed settings and checklists used to harden systems and ensure a consistent security posture. STIGs are commonly assessed with STIG Viewer, a tool that loads the guidance, maps actual configurations to each check, and helps document compliance findings. This combination—clear, DoD-specific configuration requirements plus a dedicated viewer for assessment—makes STIG the standard framework for enforcing configurations and verifying them across diverse DoD assets. Other options address broader or different contexts: MIL-STD covers general military standards, NIST SP 800-53 lists federal security controls without the DoD-specific configuration baselines or viewer workflow, and CIS Controls are general security practices rather than DoD’s implementation and assessment framework.