ISC Security Planning And Engineering Practice Question
An ISSEP needs to secure inter-process communication (IPC) on a Linux host. Which feature should be configured to prevent unauthorized processes from accessing sensitive memory space?
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
✓
Enable and configure SELinux with restrictive policies.
SELinux (Security-Enhanced Linux) provides Mandatory Access Control (MAC) that limits process access to system resources, including memory.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable and configure SELinux with restrictive policies.
Why this is correct
SELinux enforces MAC policies that restrict IPC.
- ✗
Set file permissions to 600.
Why it's wrong here
File permissions do not control memory access between processes.
- ✗
Use a rootkit scanner.
Why it's wrong here
A rootkit scanner is for detection, not prevention of IPC access.
- ✗
Update the host kernel.
Why it's wrong here
Kernel updates improve stability/security, but don't define IPC access rules.
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
One of 209 original ISC practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² 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 ISC exam.