easyMultiple ChoiceObjective-mapped
CAS-004 Practice Question: Refer to the exhibit
Exhibit
Vulnerability Scan Report Host: 10.0.0.50 Port: 443 Vulnerability: TLS 1.0 enabled (CVE-2016-2183) Severity: High CVSS: 7.5 PCI DSS: Non-compliant (Requirement 4.1)
Refer to the exhibit. The security team has been asked to remediate the vulnerability before the next PCI DSS audit. Which of the following is the MOST appropriate action?
⚠ Common exam trap
A common CompTIA exam trap is the misconception that network segmentation (VLAN) or compensating controls (API gateway) can substitute for directly disabling an insecure protocol, but PCI DSS requires the protocol itself to be removed or disabled, not just isolated or wrapped.
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
✓
Disable TLS 1.0 and enable TLS 1.2 only
The vulnerability being remediated is likely the use of outdated TLS 1.0, which is deprecated by PCI DSS and has known weaknesses (e.g., POODLE, BEAST). Disabling TLS 1.0 and enabling only TLS 1.2 directly addresses the cryptographic protocol weakness, ensuring compliance with PCI DSS requirement 4.1 (use of strong cryptography). This is the most appropriate action because it removes the insecure protocol entirely rather than isolating or compensating for it.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Move the host to a separate VLAN
Why it's wrong here
Does not address the underlying vulnerability.
- ✓
Disable TLS 1.0 and enable TLS 1.2 only
Why this is correct
Eliminates the vulnerability and achieves compliance.
- ✗
Apply a compensating control such as an API gateway
Why it's wrong here
Compensating controls may not meet audit requirements.
- ✗
Accept the risk because the CVSS score is below 8.0
Why it's wrong here
PCI DSS requires remediation of high-severity findings.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.