Port 515 is commonly associated with which printing service?

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Multiple Choice

Port 515 is commonly associated with which printing service?

Explanation:
Port 515 is the default TCP port for the Line Printer Daemon (LPD) service, the early UNIX printing protocol that accepts print jobs via the LPR/LPRQ workflow. This historical use is why it’s commonly associated with LPD. By comparison, IPP uses port 631, SMB-based printing uses 139/445, and HP JetDirect printers typically listen on 9100 for raw printing. Knowing these mappings helps you identify which printing service is running on a given host or port during network discovery and security assessments.

Port 515 is the default TCP port for the Line Printer Daemon (LPD) service, the early UNIX printing protocol that accepts print jobs via the LPR/LPRQ workflow. This historical use is why it’s commonly associated with LPD. By comparison, IPP uses port 631, SMB-based printing uses 139/445, and HP JetDirect printers typically listen on 9100 for raw printing. Knowing these mappings helps you identify which printing service is running on a given host or port during network discovery and security assessments.

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