show ip dhcp binding

C.

The correct command to determine the addresses that have been assigned on a DHCP server is "show ip DHCP binding".

Here is a more detailed explanation of each of the commands listed:

A. "Show ip DHCP database" - This command displays the contents of the DHCP database, which includes lease information, lease history, and configuration information. However, it does not provide information on the IP addresses that have been assigned to clients.

B. "Show ip DHCP pool" - This command displays the DHCP pool configuration, which includes the range of IP addresses that can be assigned to clients, as well as other pool-specific parameters. It does not provide information on the IP addresses that have already been assigned.

C. "Show ip DHCP binding" - This command displays the DHCP binding table, which includes information on the IP addresses that have been assigned to clients, the MAC addresses of those clients, the lease expiration times, and other related information. This is the correct command to use to determine the addresses that have been assigned on a DHCP server.

D. "Show ip DHCP server statistic" - This command displays statistics related to the operation of the DHCP server, such as the number of requests processed and the number of leases granted. However, it does not provide information on the IP addresses that have been assigned to clients.