Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device?

The term that describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device is “source IPv4 address.” The source IPv4 address is a 32-bit value that identifies the source of the IP packet and is typically associated with the interface or network adapter on the sending device through which the packet is transmitted. This address helps routers and other network devices determine the origin of the packet and where replies should be sent.