N10-005 · Question #674
Which of the following is described by the MAC address FF:FF:FF:FF:FF:FF?
The correct answer is D. Broadcast MAC address. In Ethernet networking, the MAC address FF:FF:FF:FF:FF:FF (all binary 1s) is the reserved Layer 2 broadcast address. A frame sent to this address is delivered to all devices on the local network segment. It is used by protocols such as ARP (Address Resolution Protocol) when a…
Question
Which of the following is described by the MAC address FF:FF:FF:FF:FF:FF?
Options
- AUnicast MAC address.
- BInvalid MAC address.
- CMulticast MAC address.
- DBroadcast MAC address.
How the community answered
(63 responses)- A2% (1)
- B3% (2)
- C2% (1)
- D94% (59)
Explanation
In Ethernet networking, the MAC address FF:FF:FF:FF:FF:FF (all binary 1s) is the reserved Layer 2 broadcast address. A frame sent to this address is delivered to all devices on the local network segment. It is used by protocols such as ARP (Address Resolution Protocol) when a device needs to discover the MAC address associated with a given IP address. A unicast MAC address (A) identifies a single, specific network interface. An invalid MAC address (B) is incorrect - this is a perfectly valid and purposefully defined address. A multicast MAC address (C) begins with 01:00:5E for IPv4 multicast and identifies a group of devices, not all devices.
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