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

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Study for the CPSA Port Numbers Exam. Practice with flashcards and multiple choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

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

Explanation:
The question tests understanding of which network port the Line Printer Daemon (LPD) uses. LPD operates over TCP and is assigned the well-known port 515 by standards (RFC 1179). A client submits print jobs to this port, which is the default for LPD-based printing setups. The other ports correspond to different printing or web services: 631 is used by IPP (the modern printing protocol), 9100 is commonly the RAW/JetDirect printing port, and 80 is HTTP used for web interfaces. Therefore, the correct port for LPD is 515.

The question tests understanding of which network port the Line Printer Daemon (LPD) uses. LPD operates over TCP and is assigned the well-known port 515 by standards (RFC 1179). A client submits print jobs to this port, which is the default for LPD-based printing setups. The other ports correspond to different printing or web services: 631 is used by IPP (the modern printing protocol), 9100 is commonly the RAW/JetDirect printing port, and 80 is HTTP used for web interfaces. Therefore, the correct port for LPD is 515.

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