Microsoft MCITP Test Prep - WIndows 7 Client

Answer - C - You should configure the BranchCache for Network Files policy if you want the clients to use BranchCache only if the round-trip network latency when attempting to access files hosted over the WAN exceeds 140 ms.

Key Takeaway: The BranchCache option can be used to improve application responsiveness within a remote office setup. When the BranchCache option is enabled, a copy of data accessed from an intranet website or a file server is cached locally within the branch office. When another user on the same network requests the file, the user gets access to the content almost immediately as it is downloaded from the local cache.