Which function sends packets at Layer 3 and does not wait for a response?

• A. sr()
• B. srp()
• C. Send()
• D. Sendp()

Answer: (C)

The key idea is one-way transmission at the IP layer without listening for replies. In Scapy, the function that sends packets at Layer 3 and does not wait for a response is the one that performs a fire-and-forget IP send. It injects the packet into the network stack and returns immediately, without attempting to receive any echo or reply. If you need a response, you’d use a send-and-receive function at Layer 3. The other options either operate at Layer 2 (Ethernet) or wait for responses, so they don’t match both conditions of Layer 3 and not waiting for a reply.