d may not incorporate all of the features exactly as they are described here.However, NFS Version 4 uses a universal character set, so it doesnt matter if the user accessing the file has a different locale than the user who created the file. This universal programming of the character makes it possible to determine what language the character is from and how to display it on the client. The server does not need to associate a locale with a pathname.IETF(1) the IETF is an open international community with evolution of the internet architecture .As such ,it is the principal body engaged in the development of anew internet standards and procedures.2.1The relation between the NFS server and Client file systemsNFS consists of the NFS server and the NFS client software. The NFS server is implemented as a daemon, waiting for requests from clients. The NFS server does not retain the state of the NFS client. The NFS server daemon is multithreaded; it processes multiple NFS client calls, in parallel. The NFS server daemon is also an event-driven, asynchronous process. Each NFS client call contains all the information necessary to complete the request see Figure ( 1 ) . The NFS client software implements a state mechanism that maintains all information required for processing client requests. Each client operation can be requested more than once and contains all the information necessary to complete the request. This model presumes no file open and close requests because these require saving the state of the object and that the server write data to the disk before returning the reply message to the user. When mounting a remote file system, an NFS client sends a message that makes the remote file system part of the local file directory. The remote host redirects operations that access files on the remote file system to the NFS client software. The NFS client and NFS server then exchange messages. Figure ...
