200-201 Question 133
Single answerA cybersecurity analyst is tasked with investigating a suspected data exfiltration incident. To analyze the network traffic during the suspected time frame, they decide to use full packet capture. Which of the following statements best describes the primary benefit of using full packet capture in this scenario?
- A
It provides metadata about the network traffic, enabling the analyst to identify the source and destination of the communication.
- B
It captures and stores the entire content of network traffic, allowing the analyst to reconstruct and analyze the data within the packets.
- C
It summarizes network traffic into statistical patterns, helping the analyst identify anomalies more efficiently.
- D
It detects and blocks malicious traffic in real-time, preventing further data exfiltration.
Show answer and explanation
Correct answer: B
Explanation
Full packet capture is a critical tool in incident response because it records the entirety of network traffic, including headers and payloads, during the capture period. This enables cybersecurity analysts to perform deep investigations, such as reconstructing data or identifying malicious content within the packets, which is essential for understanding the scope and details of incidents like data exfiltration.
- A. Incorrect.
This option describes metadata collection, such as NetFlow, which focuses on headers and traffic patterns rather than full content analysis.
- B. Correct.
This is the correct answer. Full packet capture records the complete payload and headers of network traffic, enabling the analyst to perform deep analysis, including reconstructing files or inspecting the data exfiltrated.
- C. Incorrect.
This option refers to traffic analysis techniques like statistical anomaly detection, which is not the focus of full packet capture.
- D. Incorrect.
This describes Intrusion Prevention Systems (IPS) or similar tools, which are not the purpose of full packet capture.