Question

Q1: what is significant about the contents of the destination address field?

Answer 1

Answer:The mac address is important, its used to identify devices

Explanation:

Answer 2

The destination address field must contain the MAC address.
The MAC address is needed to help find a device for an ARP request.
All hosts on the LAN will receive this broadcast frame. The host with the IP address of 192.168.1.1 (default gateway) will send a unicast reply to the source (PC host). This reply contains the MAC address of the NIC of the Default Gateway.