How many responses does a computer expect to receive when it broadcasts an ARP request? why?

Answer: The response that is expected when it broadcast an ARP request is one or zero.

Explanation: ARP request means Address Resolution Protocol which is a protocol responsible for the mapping of the IP (Internet protocol) address of a system to the MAC (Media Access Control) layer. Only one response is received only if the IP address is present in the ARP otherwise if the IP address does not matches then no response is returned. Thus only one or zero response can be received when a ARP request is process.