GSEC Windows Security Infrastructure Practice Question
Which component of the Windows Security Infrastructure is responsible for checking the user's token against the Security Descriptor of an object to authorize access?
⚠ Common exam trap
Candidates often select the 'Local Security Authority' (LSA) or 'Active Directory', confusing the high-level authentication provider with the low-level kernel component that performs the actual access check.
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
✓
Security Reference Monitor (SRM)
The Security Reference Monitor (SRM) is the core component within the Windows executive that enforces security policies. It performs the critical task of Access Check, comparing the user's security token against the object's Discretionary Access Control List (DACL). Understanding this mechanism is fundamental for any security professional, as it is the final gatekeeper for every single request to access files, registry keys, or services on a Windows system.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Local Security Authority (LSA)
Why it's wrong here
The LSA is responsible for authentication and generating access tokens during the login process. While it provides the token to the SRM, it does not perform the actual access check against file system objects. The LSA focuses on identity verification and policy enforcement, not object-level authorization.
- ✓
Security Reference Monitor (SRM)
Why this is correct
The SRM is the kernel-mode component that enforces access control. It validates the user's access token against the DACL on a requested object. It is the definitive authority for authorization decisions within the Windows operating system, ensuring that permissions are strictly followed for all resource access requests.
- ✗
Security Account Manager (SAM)
Why it's wrong here
The SAM is a database that stores local user accounts and their associated password hashes. It is utilized during the initial authentication phase to verify credentials, but it plays no role in the subsequent authorization checks or object-level access control performed once the user has successfully logged in.
- ✗
Active Directory Domain Services (AD DS)
Why it's wrong here
AD DS is a distributed database used for network-wide identity and access management. While it manages group memberships and user objects, it does not perform the real-time, per-object access check on a local Windows system. That function is handled locally by the kernel-level Security Reference Monitor.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
About these practice questions
This GSEC question is part of Courseiva's 351-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official GIAC exam blueprint
This GSEC practice question is part of Courseiva's free GIAC 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 GSEC exam.