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350-201(NEW-127Q) · Question #46

350-201(NEW-127Q) Question #46: Real Exam Question with Answer & Explanation

The correct answer is D. Implement rate limiting and traffic filtering rules.. Implementing rate limiting and traffic filtering (D) is the correct first response because a DDoS attack works by overwhelming your server with traffic - stopping that flood at the network/firewall layer is the only action that immediately reduces harm to the affected system whil

Incident Response

Question

An incident responder must mitigate a DDoS attack on a company web server. Which step from the playbook must the responder apply first to counteract this threat effectively?

Options

  • AConduct a comprehensive log analysis.
  • BGather and preserve evidence for legal purposes.
  • CIsolate and disconnect affected servers.
  • DImplement rate limiting and traffic filtering rules.

Explanation

Implementing rate limiting and traffic filtering (D) is the correct first response because a DDoS attack works by overwhelming your server with traffic - stopping that flood at the network/firewall layer is the only action that immediately reduces harm to the affected system while it's still under attack.

Why the distractors are wrong:

  • A (Log analysis) is valuable for understanding the attack, but analyzing logs while the server is being hammered doesn't stop the damage - it's a post-stabilization step.
  • B (Preserve evidence) is a legal/forensic concern that comes after you've contained the threat; evidence collection during active attack is premature and delays mitigation.
  • C (Isolate/disconnect servers) sounds decisive but is counterproductive for a web server - taking it offline means the attacker wins by achieving the same result as the DDoS itself (unavailability).

Memory tip: Think "stop the bleeding before the autopsy." In DDoS response, traffic filtering is your tourniquet - everything else (logging, evidence, analysis) happens once the flood is controlled. The order is: Filter → Analyze → Document.

Topics

#DDoS Mitigation#Incident Response#Rate Limiting#Traffic Filtering

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