Which of the following command is used to mount NFS filesystems? A. nfsmount B. knfsd C. mount D. All of the above E. None of the above

The correct answer is: C. mount

The mount command is used to mount filesystems on a Linux system. It can be used to mount local filesystems, network filesystems, and remote filesystems.

The nfsmount command is a deprecated command that was used to mount NFS filesystems. It is no longer recommended to use this command, as it has been superseded by the mount command.

The knfsd command is a kernel module that provides support for NFS. It is not a command that is used to mount NFS filesystems.

Therefore, the correct answer is C. mount.