Which method allows for packet capture in a structured format?

The method that allows for packet capture in a structured format is PCapNG. This format, which stands for Packet Capture Next Generation, is designed to provide a more flexible and extensible way to capture network traffic compared to traditional formats. PCapNG can accommodate various types of metadata about the captured packets, including packet size, timestamp, and capturing device details, which are crucial for detailed analysis. This structured approach makes it easier for network professionals to interpret and analyze the captured data effectively.

In contrast, formats like plain text, binary format, and text files do not offer the same level of organization or detail. Plain text captures may simply display raw packet data without the necessary structure for analysis. Binary formats might offer compactness but lack the metadata support found in PCapNG. Text files similarly do not adhere to a structured scheme, which limits their usefulness for comprehensive network analysis. Thus, PCapNG emerges as the definitive choice for structured packet capture.