Full packet capture provides the complete recording of all the packets that are transmitted over the network.
This data is essential for in-depth analysis during an investigation, as it allows investigators to reconstruct the session, observe the content of the traffic, and determine if data exfiltration has occurred.
References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) study materials would typically cover the importance of full packet capture in network forensics and incident response.