When using a PC on a Windows Domain, which of the following is the MOST critical service when connecting to multiple file, print, and email servers?

Internet Connection Sharing allows one PC to share its internet connection with others and is not relevant to resolving internal server names on a domain.

The Windows Firewall Service controls inbound and outbound traffic filtering but does not resolve server hostnames or enable discovery of domain resources.

The Computer Browser Service maintains a legacy NetBIOS browse list of network computers but is not the primary or most critical service for connecting to named servers in a modern domain environment.

DNS (Domain Name System) translates human-readable server names into IP addresses, which is required before any network connection to a file, print, or email server can be established. Without a functioning DNS service, the client cannot resolve server names to addresses and all server-based services will fail. Every other connectivity service depends on DNS resolution succeeding first.