What is Scapy primarily used for?

• A. Packet crafting, sniffing, and editing packets
• B. Network performance monitoring
• C. Web application scanning
• D. Password cracking

Answer: (A)

Scapy is a Python-based tool for constructing, sending, sniffing, parsing, and editing network packets. The key idea is that you can build custom packets from scratch, inject them onto the network, capture responses, and modify or replay packets to test how protocols and devices respond. This makes packet crafting, sniffing, and editing packets the best description of its primary use. It’s not primarily a network performance monitor, web application scanner, or password cracker, which are typically handled by other specialized tools.