题目内容

Subscription-based software is software __________________________

A. free to use but some functionalities may not be available.
B. available for use after pay a periodic fee.
C. available for use at no monetary cost.
D. freely distributed to users on trial basis.

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Linux is a/an __________________ Operating System.

A. Windows
B. Microsoft
C. Mac
D. Open source

The basic operations performed by CPU are：

Arithmetic operation
B. Logical operation
C. storage and relative
D. All of these

What are the operations performed by the ALU of a computer?

A. Greater than
B. Less than
C. Equal to
D. Add

Which are the components a computer must have _______________.

A central processing unit
B. A memory
C. Input and output unit
D. GPU