Transcript A Big Test Result

Introduction to
Computer Networks
Network Printing
This lesson presents an overview of the network
printing process and describes how a shared
printer works within a network operating
system.
The Network Printing Process
• when network users want to print data on a shared
network printer, they send their data to a print
server. The server then feeds that data to a shared
printer.
Print Spooler & Print Queue
• A print spooler is software that intercepts a print job
on its way from the application (a word processor,
for example) to the printer, and sends it to a print
queue.
• A print queue is a buffer where the print job is
held until the printer is ready for it.
Network printing processes
• Network printing occurs in the following four steps.
• 1. An application formats its document data into a
form the printer can use, and sends it out.
• 2. The computer's redirector sends the data onto
the network, where it travels to the print server.
• 3. The print-spooler software on the print server
places the data in a print queue on the server.
• 4. The print queue stores the data until the printer
is free to print it.
Sharing a Printer
• Connecting a printer to a network print server will
not, in itself, make the printer available to network
users.
• The printer is a resource on the server, and—like
any other resource—it must be shared to the
network before anyone can access it.
• In a server-based network, access to the printer
can be controlled in the same way as access to
any other resource on the server.
• To send print jobs to a printer, users have to be
able to identify or see the printer from their
computers.
Essential Printer Information
• Every NOS has its own version of printer sharing,
but each requires the administrator to provide
printer drivers and supply the NOS with
information about the printer.
• These procedures include:
• 1. Loading printer drivers
2. Creating a share name for the printer
3. Identifying the destination of the output
4. Setting information and output format
parameters so that the NOS will know how to
handle and format the print job.
The Print-Sharing Utility
• This process can seem complex, but most network
operating systems have utilities to help
administrators enter the information.
• After a printer has been shared, users must use the
NOS to connect to it.
• The administrator needs to supply the name of the
server to which the printer has been connected ,
and the name of the printer during the sharing
process.