Computer Security Applicationsadvanced
Compare live capture with offline analysis, and explain why an analyst might save captured network data.
Answer
Live capture observes traffic as it flows across a selected interface. Offline analysis examines saved capture data later. Saving data allows detailed review, filtering, statistics, and documentation after the live collection has stopped.
Explanation
### The concept
Live capture collects packets while network traffic is occurring. Offline analysis works from data already saved in a capture file, so the analyst can revisit the same evidence without capturing the event again. Saving can be useful when a live capture contains too much data to analyze immediately or when the results need to be documented. Wireshark also provides statistics and filters to help inspect captured traffic.
### What a good answer covers
- Live capture observes current traffic.
- Offline analysis examines saved traffic.
- Saved data supports repeated analysis and documentation.
- Filters and statistics can help make a large capture manageable.
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