Final answer:
The port that receives a copy of every packet on a switch is known as a SPAN port, which stands for Switched Port Analyzer.
Step-by-step explanation:
The port on a switch that receives a copy of every packet that passes through it is known as a SPAN port. SPAN stands for Switched Port Analyzer and is also referred to as port mirroring or monitoring port. It allows the administrator to configure a port to copy traffic from one or more ports (or VLANs) to another port where the traffic can be analyzed. This is widely used for network troubleshooting, analysis, and security monitoring purposes.