What symbol represents the root directory in Linux file systems?

/ (forward slash)

True or False: Linux commands and file names are case-sensitive.

True. Linux treats uppercase and lowercase letters as different characters.

Which command displays the current directory location in Linux?
A) pwd
B) cd
C) ls
D) dir

A) pwd (print working directory)

The _____ command is used to change file permissions in Linux.

Chmod

What does the numeric permission 755 mean for a file?

Owner has read/write/execute (7), group and others have read/execute (5)

Which macOS feature prevents modification of system files even by root?

System Integrity Protection (SIP)

True or False: macOS uses .exe files for application installation.

False. macOS uses .dmg and .pkg files for installation.

What is the name of the file browser application in macOS?
A) Explorer
B) Finder
C) Navigator
D) Browser

B) Finder

The _____ feature in macOS provides full-disk encryption.

FileVault

Which package manager is used on Ubuntu Linux systems?

Apt-get (or apt)

What happens when you perform a Powerwash on Chrome OS?

Factory reset that removes all local data and settings

True or False: Chrome OS updates can be deferred by users.

False. Chrome OS updates are automatic and cannot be deferred.

Which directory contains user home folders in Linux?
A) /usr
B) /home
C) /users
D) /accounts

B) /home

What does sudo allow a user to do in Linux?

Execute commands with root/administrator privileges temporarily

iOS apps can only be installed from the _____ unless the device is jailbroken.

App Store

True or False: Android allows sideloading apps from APK files outside Google Play.

True. Android permits installation from unknown sources when enabled.

What is MDM in mobile device management?
A) Mobile Data Monitor
B) Mobile Device Management
C) Multiple Device Mode
D) Manual Device Maintenance

B) Mobile Device Management

A user gets 'Permission denied' installing Linux software. What command prefix fixes this?

Sudo (followed by the installation command)

Which macOS security feature controls which applications can be installed?

Gatekeeper

The /etc directory in Linux contains _____ files.

Configuration

True or False: Windows uses forward slashes in file paths like Linux.

False. Windows uses backslashes, while Linux uses forward slashes.

An Android phone shows suspicious apps and drains battery quickly. What troubleshooting mode helps?

Safe Mode (boots without third-party apps to identify malware)