An engineer must set the DNS name for a Cisco Unity Connection system. Which CLI command accomplishes this task?

'set network domain' configures the server's network domain membership context and is not the command used to set the DNS name options in Cisco Unity Connection.

'set network name-service' is not a valid command in the Cisco Unity Connection CLI.

'set network dns' is used to set the IP addresses of the primary and secondary DNS servers, not to configure the system's DNS domain name or hostname options.

'set network dns options' in the Cisco Unity Connection CLI is the specific command for configuring DNS name-related options including the domain name component used to form the system's fully qualified DNS identity, distinguishing it from commands that set server addresses or general network domain membership.