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What should be done to prevent unauthorised use when leaving a computer without closing programs?

Answer and explanation

Correct answer: Lock the computer

The governing concept is basic computer security and access control. Locking the computer keeps the current programs and files open but requires the user's password, PIN, or another authentication method before access is restored. Turning off the internet does not prevent someone nearby from using local files, reducing brightness is unrelated, and renaming a file provides no protection. Therefore, option D is correct.

Related tags

Computer-LockComputer-SecurityUser-SessionPrivacyBasic Computer Operations (Hardware And Software)Basic Computer Operations Hardware And SoftwareIct (Information & Communication Technology) Skills IIct Information Communication Technology Skills I

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