File and print servers / Internet and Networking

File and print servers :- control and share printers and files among clients on the network.  File and print servers were the original reason to have a network; a large number of users needed access to the same files,  so the files were placed on a server,  and all clients were connected to the server when they needed to work with the files.  File server often have the following characteristics;

•  Large amounts of memory 
•  Fast hard disks 
•  Multiple CPUs 
•  Fast I/O buses 
•  High-capacity tape drive 
•  Fast network adapters
•  Redundant power supplies
•  Hot-swappable hard disks and power supplies 

File and print servers also check the access control list (ACL)  of each resource before allowing a user to access a file or use a printer.  If the user or a group to which the user belongs is not listed in the ACL,  the user is not allowed to use the resource,  and an "access denied" message appears on the user's screen.