Final answer:
Full packet capture refers to storing entire data packets for analysis, whereas extracted content involves taking specific information from those packets for focused analysis. Statements (a) and (b) accurately describe these terms, while statements (c) and (d) do not.
Step-by-step explanation:
In NSM (Network Security Monitoring) data types, full packet capture and extracted content are important concepts. The statements (a) and (b) are accurate descriptions of these concepts. Statement (a) correctly indicates that full packet capture involves storing entire data packets, which includes headers, payloads, and trailers, if present. This allows for a comprehensive analysis of what was transmitted over the network at any given time. On the other hand, statement (b) reflects that extracted content refers to specific information that is selected and taken from stored data for analysis. This could include things like file objects, session data, and key header information.
Statements (c) and (d) are incorrect. Full packet capture does in fact capture complete packets, not just headers, as suggested by statement (c). Extracted content is directly related to the original packet's data and is extracted for ease of analysis or due to its significance; this is contrary to what is claimed in statement (d).