Final answer:
The maximum size of an Ethernet frame is 1500 bytes.
Step-by-step explanation:
The maximum size of an Ethernet frame when it is assembled by a computer to be sent over the network is 1500 bytes. An Ethernet frame consists of various fields, including the destination and source MAC addresses, payload data, and error checking. The maximum payload size in an Ethernet frame is 1500 bytes, which is the maximum amount of data that can be transmitted in one frame.