1. And client processes can ask for service from server processes by various IPC mechanisms. 2. A new client process reusing this persistent connection will get the connection " as is ". 3. Doors are created by server processes ( which must use threads ) and called by client processes . 4. This means its state can change for reasons unrelated to the behavior of a single sender or client process . 5. A Linux kernel module and pvfs-client process allow the file system to be mounted and used with standard utilities. 6. Note that each client processes the data independently on its machine in a process that is called stabilization of the portal. 7. So how could a client process asking for service communicate with a non-process or a binary file via IPC? 8. The doors concept is very similar to X / Open XATMI API specification, where client processes invokes server processes exposed functions. 9. Unlike kill, xkill does not request that the client process , which may be running on a different machine, be terminated. 10. With the assistance of operating system and network agents, a client process sends a message to a server process and receives a reply.