What does a host on an Ethernet network do when it is creating a frame and it does not have the
destination address?
A.
Drops the frame
B.
Sends out a Layer 3 broadcast message
C.
Sends a message to the router requesting the address
D.
Sends out an ARP request with the destination IP address
Explanation:
In this case, it will send out an ARP request for MAC address of the destination IP (assuming it
doesn’t already have it in its table) and then address it to the destination’s MAC address.
The Address Resolution Protocol uses a simple message format containing one address resolution request or response.
ARP is a telecommunication protocol used for resolution of network layer addresses into link layer addresses, a critical function in multiple-access networks.