Contact a display manager over the network and start a remote X11 login session.
Which protocol is relevant?
XDMCP is the X Display Manager Control Protocol used to negotiate sessions with a remote display manager.
Detailed explanation
Correct. XDMCP is designed for remote display-manager session setup.
Correct. XDMCP is designed for remote display-manager session setup.
Incorrect. VNC transfers a screen through RFB rather than querying a display manager.
Incorrect. VNC transfers a screen through RFB rather than querying a display manager.
Incorrect. RDP is a different remote desktop protocol.
Incorrect. RDP is a different remote desktop protocol.
Incorrect. SPICE targets virtual-machine consoles and devices.
Incorrect. SPICE targets virtual-machine consoles and devices.
Try it yourself
An example you can run in a temporary verification environment.
printf '%s\n' 'XDMCP: X display manager session protocol'Expected result
XDMCPの役割を表示Key points
- Display-manager query
- Start X11 session
- No encryption by default
Notes
- Environment: プロトコルの概念確認 / 通信なし
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.