GCFA Question #282: Real Exam Question with Answer & Explanation

The correct answer is C. /etc/inittab. The /etc/inittab file is the traditional Linux SysV init configuration file that defines which processes are launched at each runlevel during system boot.

Question

In Linux, which of the following files describes the processes that are started up during boot up?

Options

A/etc/passwd
B/etc/profile
C/etc/inittab
D/etc/shadow

Explanation

The /etc/inittab file is the traditional Linux SysV init configuration file that defines which processes are launched at each runlevel during system boot.

Common mistakes.

A. /etc/passwd stores user account information such as usernames, UIDs, home directories, and default shells, and plays no role in defining boot-time processes.
B. /etc/profile is a shell script that configures system-wide environment variables and startup settings for interactive login shells, not the init daemon's process definitions.
D. /etc/shadow stores encrypted user passwords and password aging policy, and has no involvement in the boot process or service initialization.

Concept tested. Linux SysV init boot configuration via /etc/inittab

Reference. https://man7.org/linux/man-pages/man5/inittab.5.html

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