Which port number is used by the Line Printer Daemon (LPD) protocol?

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Multiple Choice

Which port number is used by the Line Printer Daemon (LPD) protocol?

Explanation:
LPD uses TCP port 515. This is the standard port assigned to the Line Printer Daemon service (commonly shown as printer 515/tcp) and defined for UNIX printing. When a client submits a job, it connects to the printer on this port using the LPD protocol, and the daemon handles queuing and sending the data to the printer. Other common printing ports serve different protocols: 631 is for IPP (Internet Printing Protocol) over HTTP, 9100 is often used for raw/JetDirect-style printing, and 633 is not a standard LPD port. So the port number associated with LPD is 515.

LPD uses TCP port 515. This is the standard port assigned to the Line Printer Daemon service (commonly shown as printer 515/tcp) and defined for UNIX printing. When a client submits a job, it connects to the printer on this port using the LPD protocol, and the daemon handles queuing and sending the data to the printer. Other common printing ports serve different protocols: 631 is for IPP (Internet Printing Protocol) over HTTP, 9100 is often used for raw/JetDirect-style printing, and 633 is not a standard LPD port. So the port number associated with LPD is 515.

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