Final answer:
Three characteristics of a DHCP Discover message are: broadcast transmission, sent by the DHCP client, and unicast transmission.
Step-by-step explanation:
Three characteristics of a DHCP Discover message are:
- Broadcast transmission: The DHCP Discover message is sent as a broadcast signal, which means it is sent to all devices on the network.
- Sent by the DHCP client: The DHCP Discover message is initiated by the client device that is looking for an IP address.
- Unicast transmission: Although the initial message is broadcast, the DHCP server will respond to the client's request with a unicast transmission.