BigMAC Bits

What this MAC address first-octet question tests

This is an easy networking question that tests whether you understand the structure and meaning of Ethernet MAC addresses at the bit level. It probes your familiarity with how the first octet encodes critical information about the address type and scope.

To answer questions like this, you need to recognize that the least significant bits of the first octet carry specific flags—particularly whether an address is unicast or multicast, and whether it is globally unique or locally administered. Interpreting these flags requires converting hexadecimal values to binary and understanding what each bit position signifies in the IEEE 802 standard.

• Unicast vs. multicast addresses
• Globally unique vs. locally administered addresses
• Hexadecimal-to-binary conversion and bit-level interpretation