How to Resolve a Router CPU Vulnerability Alert?
A network engineer receives a vendor alert regarding a vulnerability in a router CPU. Which of the following should the engineer do to resolve the issue?
Community Votes
100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
This question evaluates hardware vulnerability remediation procedures, with the common trap being the selection of immediate system isolation instead of the permanent resolution method.
When a vendor discloses a router CPU vulnerability, applying a firmware update is the standard remediation to patch hardware-level flaws and secure the control plane. CompTIA Network+ candidates must recognize that firmware upgrades address low-level hardware issues more effectively than OS patches or hardware replacements.
Candidates frequently choose isolate the system because it is a critical initial step in incident response, but the question explicitly asks how to resolve the vulnerability itself rather than contain an active exploit.
Community Discussion (4 comments)
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Expert Analysis
Why the Answer Is Correct
Router CPU vulnerabilities typically stem from microcode flaws, ASIC bugs, or control-plane processing weaknesses that cannot be fixed by traditional software patches. Updating the firmware applies vendor-provided microcode and low-level security fixes directly to the hardware management layer. This permanently mitigates the disclosed risk and restores the device to a secure operational state.Why the Other Options Are Wrong
Replacing the system board is an extreme, cost-prohibitive measure that bypasses the standard practice of applying vendor patches. Patching the operating system targets network stack or application-layer vulnerabilities, not hardware or CPU-level defects. Isolating the system serves as a containment strategy during active compromise, but it does not eliminate the underlying vulnerability once traffic resumes.Community Comment Notes
The majority of voters correctly identified firmware updates as the definitive fix for hardware-level alerts. One highly upvoted comment notes that isolation should precede patching during active incidents, but clarifies that this is a triage step rather than a resolution method. The community consensus aligns with CompTIA’s testing framework, which expects candidates to select the permanent remediation action when asked how to resolve a disclosed issue.Official Reference
Exam Strategy
Always scan for action verbs like resolve, remediate, or fix to distinguish between temporary containment measures and permanent solutions. Prioritize vendor-approved patches and firmware updates when addressing hardware or infrastructure vulnerabilities on certification exams.
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