Chmod — CompTIA A+ Core 2 (220-1102) Practice Questions
The chmod command is the primary Linux and macOS utility for changing file and directory permissions, and it appears on the 220-1102 exam as part of the operating system command-line objectives. Technicians must understand both the symbolic notation, such as adding execute permission for the owner, and the octal numeric notation, such as 755, which encodes all three permission classes in a single value. Applying chmod correctly ensures that scripts, configuration files, and user directories have the intended access restrictions without over-permissioning. Misuse can create security gaps, so the exam reinforces understanding of when and how to apply permission changes safely.
Free questions on chmod
Which Linux command changes file permissions using numeric notation?
Free question · easy · full answer + explanation
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