An administrator changed an NFS mount point to read/write capability by adding the -rw option in /etc/exports. Clients are still unable to write to the Network File System. How can this be resolved?

The exportfs -a command instructs the NFS server to export all directories currently listed in /etc/exports, applying any configuration changes such as the newly added -rw option. Without running this command, the kernel's export table still reflects the old read-only configuration. Clients will not see the updated permissions until the server re-publishes the share via exportfs.

There is no standard Linux NFS command called 'refresh -g nfs'; this is not a valid utility for refreshing NFS exports.

Unmounting and remounting the filesystem on the server affects local mount state, not the exported share permissions advertised to NFS clients.

The mount -o rw command controls how a filesystem is locally mounted on the server, not what permissions the NFS server advertises to remote clients via its export table.