Final answer:
The ARP (Address Resolution Protocol) command can be used to display mappings between IP addresses and MAC addresses in a network.
Step-by-step explanation:
The command that can be used to display the mappings between different layers of the network architecture is ARP (Address Resolution Protocol). ARP is responsible for resolving the association between Internet Layer addresses and Link Layer addresses (IP to MAC address mappings).
When a host needs to communicate with another host on the same local network, it uses ARP to find the MAC address associated with the destination IP address. If the mapping is not known, ARP sends out a broadcast message to the network to discover the MAC address corresponding to the given IP address.