LFCS Question #107: Real Exam Question with Answer & Explanation

The correct answer is B: It is started like any other system service by the init system.. A display manager, such as GDM or KDM, is started as a regular system service by the init system during the boot process to provide a graphical login.

Submitted by khalil_dz· Apr 18, 2026Operation of Running Systems

Question

How is a display manager started?

Options

AIt is started by a user using the command startx.
BIt is started like any other system service by the init system.
CIt is started by inetd when a remote hosts connects to the X11 port.
DIt is started automatically when a X11 user logs in to the system console.

Explanation

A display manager, such as GDM or KDM, is started as a regular system service by the init system during the boot process to provide a graphical login.

Common mistakes.

A. startx is used to manually start an X session from a text console, usually without a display manager, not to start the display manager itself.
C. inetd manages network services that are started on demand for incoming connections; a display manager is a local graphical login service, not an inetd-managed network service.
D. A display manager actually facilitates user login sessions by providing the login screen, rather than being started after an X11 user has already logged in.

Concept tested. Linux display manager startup

Reference. https://ubuntu.com/blog/what-is-a-display-manager

Topics

#Display Manager#Init System#systemd#Boot Process

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