NFS Interview Questions & Answers part 3


Q: – What is NFS ?

NFS stands for Network File System. NFS was originally developed by Sun Microsystems in the 1980's. NFS allows remote hosts to mount file systems over a network and interact with those file systems as though they are mounted locally. This enables system administrators to consolidate resources onto centralized servers on the network.

Q: – Which NFS versions are available ?

NFS Version 2
NFS Version 3
NFS Version 4

Q: – What is the role of "rmtab" File for NFS Server?

For every mount request received from an NFS client, rpc.mountd adds an entry to the /var/lib/nfs/rmtab file. When receiving an unmount request, that entry is removed.

Q: – What is "portmap"?

The portmapper keeps a list of what services are running on what ports. This list is used by a connecting machine to see what ports it wants to talk to access certain services.

Q: – What is different between NFS Version 2 & 3 ?

nfs 2 default 8kb transfer rate,it did not check the authentication at the time connection.client wants to access unauthorized file it shows error messages like "write error","read error" nfs 3 32kb transfer rate. It check at the time connection- ACL Support

Q: – What do you understand by "nfsstat –nfs –server -3" command?


It will show statistics for NFS version 3 server.

Q: – Can NFS share mounted on Window XP and Justify your answer?


No, Window XP operating system doesn’t support nfs protocol.

Submitted By:-Jai Kundu           Email-ID: –