Final answer:
BranchCache does not support the NFS protocol. It supports HTTP/HTTPS, SMB, and BITS which are used to optimize bandwidth usage by caching content in a corporate network.
Step-by-step explanation:
The protocol not supported by BranchCache is D) NFS (Network File System). BranchCache is a feature that allows computers in a corporate network to cache accessed content from remote servers to optimize bandwidth usage.
It supports the following protocols: A) HTTP/HTTPS (HyperText Transfer Protocol/Secure), B) SMB (Server Message Block), and C) BITS (Background Intelligent Transfer Service). NFS, which is primarily used for file sharing in UNIX/Linux environments, is not supported by BranchCache.