Final answer:
Ports that have numbers in the range of 49152 - 65535 are referred to as dynamic ports. They are allocated by the operating system on-demand.
Step-by-step explanation:
Ports that have numbers in the range of 49152 - 65535 are referred to as Dynamic ports. These ports are used by client applications to establish communication with server applications. Unlike well-known ports or registered ports, dynamic ports are not predefined and are allocated by the operating system on-demand.