Booting installation media first | LinuC Level 1 101 Exam original practice question

1.01.1Basic

A bootable Linux installation USB is connected to a physical machine with an existing OS on its internal disk.

Start the installer from the USB.

Which setting should be checked or changed first?

Hint 1: Focus on the requirement

Locate the decision in the boot path before the operating system is running.

Hint 2: Key terms

Review the short definitions before comparing the command or configuration choices.

Firmware: UEFI or BIOS initializes the machine and selects an initial boot program or device.
Boot order: The priority used when firmware chooses which device or entry to try first.
Installation media: A bootable USB or optical image containing the installer.

Detailed explanation

CorrectUEFI/BIOSのブート順序

Correct. UEFI/BIOS controls the initial boot-device selection.

Incorrect/etc/fstabのマウント順序

Incorrect. /etc/fstab controls filesystem mounts after the OS starts.

IncorrectPATHのディレクトリ順序

Incorrect. PATH controls command lookup inside a running shell.

Incorrectsystemdのサービス依存順序

Incorrect. systemd orders services after the kernel and userspace start.

An example you can run in a temporary verification environment.

test -d /sys/firmware/efi && echo UEFI || echo BIOS-or-unavailable

実行中システムがUEFI起動ならUEFI。設定変更は行わない

Environment: 一般的なx86_64 Linux
Use a disposable VM or test account when validating installation and SSH behavior.
Exact command output can vary slightly by distribution and OpenSSH version.

Foundation review

Firmware settings, filesystem mounts, command lookup, and service ordering occur at different boot stages.

Confirm that the selected device is bootable before changing settings in the installed OS.

Question IDKL-101-297

Environment一般的なx86_64 Linux

Last technical review2026-08-13

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