EC-Council CSA-312-39 Practice Test

CSA-312-39 practice test: what's covered

• SOC Operations
• Threat Intel
• Logging
• SIEM Detection
• Triage
• Incident Response

Free CSA-312-39 sample questions

1. A Tier 1 SOC analyst receives an automated alert indicating multiple failed SSH login attempts from an internal IP address targeting a sensitive database server. After verifying that the source host belongs to a system administrator who is currently on scheduled leave, what is the MOST appropriate next action for the analyst?

   • A. Escalate the ticket to Tier 2 with correlated authentication logs and isolate the source host per playbook
   • B. Ignore the alert because administrative credentials frequently trigger false positives during scheduled backups
   • C. Close the alert ticket immediately and email the administrator on leave to request verification upon return
   • D. Delete the authentication logs from the SIEM indexer to reduce disk consumption and clear the alert queue
   Show answer

   Correct: A. Escalating to Tier 2 with full context and isolating the compromised source host follows standard SOC escalation hierarchy when credential misuse occurs. Ignoring the alert is incorrect because unauthorized administrative logins present severe risk. Closing the ticket without investigation violates SLA policies, and deleting authentication logs destroys critical forensic evidence.

2. A SOC Manager is reviewing key performance metrics for the previous quarter. The reporting dashboard indicates a high Mean Time to Detect (MTTD) but a low Mean Time to Respond (MTTR). Which strategic initiative would BEST help the SOC reduce its MTTD?

   • A. Deploy automated correlation rules and integrate high-fidelity threat intelligence feeds into the SIEM
   • B. Decrease the retention period of SIEM security logs from 90 days down to 7 days to speed up search queries
   • C. Disable all low and medium severity alert rules to ensure analysts only focus on critical notifications
   • D. Replace the automated Incident Response platform with manual spreadsheet tracking for all security incidents
   Show answer

   Correct: A. High MTTD indicates delayed threat identification, which is directly improved by automated correlation rules and threat intelligence integration. Decreasing log retention limits historical threat analysis, disabling low/medium rules creates monitoring blind spots, and manual tracking increases operational overhead and response latency.

3. During a shift handover in a 24/7 Security Operations Center, a departing Tier 1 analyst is transferring an active, unresolved investigation involving a potential ransomware outbreak to the incoming shift. What information is MOST critical to include in the shift handover report?

   • A. Current containment status, affected host IPs, established timeline, and specific next investigative actions
   • B. Full personal background of the affected workstation user and their annual performance evaluation notes
   • C. Unmodified raw PCAP files attached via email without any contextual summary or diagnostic findings
   • D. A verbal confirmation that all alerts were cleared from the console without documented ticket numbers
   Show answer

   Correct: A. A structured shift handover must contain actionable incident details including containment state, impacted scope, incident timeline, and pending steps to maintain operational continuity. Personal performance notes are irrelevant to incident management, attaching raw PCAPs without context delays analysis, and unrecorded verbal handovers lead to dropped investigations.

4. A medium-sized enterprise requires 24/7 security monitoring but lacks the capital budget to recruit and retain a full internal night-shift SOC team. Which SOC deployment model BEST satisfies these operational constraints?

   • A. Hybrid SOC model utilizing internal staff during business hours and an MSSP for after-hours co-management
   • B. Fully decentralized SOC model where individual department managers review their own local event logs daily
   • C. Completely offline SOC model operating exclusively without internet connectivity or external log sources
   • D. Ad-hoc SOC model relying entirely on third-party security vendor notifications without any active monitoring
   Show answer

   Correct: A. A Hybrid SOC leverages internal context during primary business hours while utilizing a Managed Security Service Provider (MSSP) for 24/7 coverage, matching budget constraints. Decentralized monitoring lacks expertise and oversight, offline SOCs cannot protect connected infrastructure, and ad-hoc monitoring leaves the organization vulnerable between vendor alerts.

5. A SOC has established a Service Level Agreement (SLA) requiring initial triage within 15 minutes for Critical alerts, 1 hour for High alerts, and 4 hours for Medium alerts. An analyst console displays four queued alerts simultaneously. Which alert should the analyst triage FIRST?

   • A. Critical alert indicating domain controller database access from an unauthorized internal IP address
   • B. Medium alert reporting a software update check failure on an isolated printer management VLAN host
   • C. Low alert reporting an expired SSL certificate on an internal non-production testing web server host
   • D. High alert noting a single failed HTTP 404 access log entry on a public static marketing website
   Show answer

   Correct: A. SLA prioritization dictates that Critical severity alerts—especially those targeting core infrastructure like Domain Controllers—must be processed first. Lower severity items like printer updates or 404 errors have wider SLA windows and lower operational impact.

Last updated: 2026-10-19

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