You work as the network administrator at Domain.com. The Domain.com network consists of a single Active Directory domain named Domain.com. Domain.com has its headquarters located in London and branch office located in Paris. All servers on the Domain.com network run Windows Server 2008 and all client computers run Windows Vista. Domain.com currently makes use of a computer named CERTKILLER-SR01 in the London office as the network DNS server.
Domain.com currently has the network configured with each office containing a file server used to access and store files. During the course of the day you receive complaints from network users complaining about the long wait when connecting to network resources. You later checked the WAN bandwidth and discovered no problems. Domain.com requested that you ensure the network users are able to access resources quickly as possible.
What should you do? (Choose two)