Which of the following is inserted in the middle of a MAC address when converting it to EUI-64?

When converting a MAC address to an EUI-64 format, the hexadecimal string "FFFE" is inserted in the middle of the MAC address. The EUI-64 format is used for creating IPv6 addresses from a 48-bit MAC address.

Here’s how the conversion process works: a standard MAC address is made up of 6 bytes (48 bits). To create an EUI-64 identifier, the MAC address is split into two parts. The first three bytes remain as they are, and the "FFFE" string is inserted between the first three bytes and the last three bytes of the MAC address.

For example, if you had a MAC address of 00:1A:2B:3C:4D:5E, the conversion to EUI-64 would involve taking the first half (00:1A:2B), adding "FFFE," and then attaching the second half (3C:4D:5E), resulting in 00:1A:2B:FF:FE:3C:4D:5E.

This process helps in the unique identification of devices within the IPv6 protocol environment by ensuring that each device has a distinct EUI-64 identifier,