ISC Practice Question: Systems Security Implementation Verification And Validation
When conducting a security validation of a cloud-based infrastructure, which TWO of the following tasks are essential for verification?
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
✓
Verifying that security group ingress rules are restrictive.
Verifying IAM roles and network security groups are critical, foundational steps in cloud security validation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Verifying that security group ingress rules are restrictive.
Why this is correct
Restricting ingress traffic is the primary network defense in cloud environments.
- ✓
Reviewing IAM role definitions for the principle of least privilege.
Why this is correct
Ensuring roles have minimal permissions is a core verification activity.
- ✗
Ensuring the billing account is audited for cost anomalies.
Why it's wrong here
Cost auditing is not a primary security implementation verification task.
- ✗
Checking the physical server hardware for tamper evidence.
Why it's wrong here
Physical security is the responsibility of the cloud provider.
- ✗
Validating the OS patch level of the underlying host.
Why it's wrong here
The cloud provider manages the underlying host OS in IaaS/PaaS models.
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.