Which is a valid Ethernet MAC (adapter) address?

A valid Ethernet MAC address is represented in a specific format, consisting of six pairs of hexadecimal digits, typically separated by colons or hyphens. The correct representation contains values ranging from 0-9 and A-F, reflecting the hexadecimal system.

The choice that aligns with this format is the representation that utilizes hyphens and contains six pairs of hexadecimal digits: 00-0C-59-F3-0D-26. Each pair corresponds to one byte of the 48-bit MAC address, which is crucial for unique identification of devices on a network.

The other choices do not conform to the correct MAC address format. The first choice is an IPv4 address format, which demonstrates a different addressing system not applicable for MAC addresses. The third choice, using colons and mixed formats, does not correctly represent a valid MAC address as it contains an insufficient number of pairs and includes inappropriate formatting. Thus, the only valid Ethernet MAC address provided in the options is the one correctly formatted with hyphens and six pairs of hexadecimal values.