When documents are printed to a network print queue, they are routed to a designated print server machine that handles network print queue requests. In this case, the print server machine (rather than the workstations submitting requests) must be mapped to the network print queue.
The primary advantage of network print queues is that if a job fails, you can correct the problem and then reset the print job status to reprint. You can also check the progress of large print jobs sent to a network print queue.