hardMultiple Choice
CS0-003 Practice Question: During a post-incident review, the team…
During a post-incident review, the team identifies that the incident response plan was not followed correctly due to unclear communication channels. Which recommendation BEST addresses this issue?
⚠ Common exam trap
The CS0-004 exam often tests the distinction between procedural improvements (like updating the IR plan) versus technical controls (like MFA or SIEM upgrades), and the trap here is that candidates mistakenly choose a technical solution (e.g., faster SIEM) when the root cause is a process/communication failure.
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
✓
Update the incident response plan to define specific communication channels and escalation paths
The root cause identified in the post-incident review is unclear communication channels, which directly violates the communication and escalation procedures defined in the incident response plan. Updating the plan to specify exact communication channels (e.g., dedicated Slack channel, email distribution list, or phone tree) and escalation paths (e.g., tier-1 analyst → SOC manager → CISO) ensures that all team members know how and when to communicate during an incident, preventing delays and miscoordination.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Update the incident response plan to define specific communication channels and escalation paths
Why this is correct
Post-incident reviews (PIRs) often highlight breakdowns in coordination and reporting. Updating the incident response plan (IRP) to explicitly detail communication protocols, designated channels (such as out-of-band messaging), and escalation matrices directly addresses these organizational bottlenecks. This ensures that future incidents are handled with clear lines of authority and minimal delay.
- ✗
Implement multi-factor authentication for all accounts
Why it's wrong here
While enforcing multi-factor authentication (MFA) is a critical identity and access management (IAM) control that mitigates credential stuffing and unauthorized access, it does not address the procedural communication failures identified during the post-incident review. Technical controls cannot substitute for well-defined administrative workflows and incident coordination procedures.
- ✗
Replace the current SIEM tool with a faster one
Why it's wrong here
Upgrading or replacing a Security Information and Event Management (SIEM) system may improve log ingestion rates and correlation speeds, but it does not resolve human-centric communication issues. A faster SIEM will still fail to streamline incident response if the security team lacks clear escalation paths and defined communication channels to report findings.
- ✗
Conduct more frequent vulnerability scans
Why it's wrong here
Increasing the frequency of vulnerability scanning helps identify unpatched systems and configuration drift earlier in the lifecycle. However, this proactive assessment measure does nothing to resolve the reactive communication and coordination gaps that occur once an active security incident is underway.
Go deeper
Related to this question
Learn chapter
Communication and Chain of Custody
Key term
Incident response
Incident response is the structured approach an organization uses to identify, contain, and recover from cybersecurity incidents like data breaches or ransomware attacks.
Key term
SOC
A Security Operations Center (SOC) is a centralized team that monitors, detects, analyzes, and responds to cybersecurity incidents to protect an organization's information systems.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CS0-004 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 CS0-004 exam.