Q: Optical Character Readers are used for :?

A. Visual display
B. Input
C. Output
D. I/O


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Q: The use of computers to create , view, edit , store , retrieve and point text materials is :?

A. Data processing
B. Word processing
C. Image processing
D. Simulation


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Q: Which one of the followings is word processing software :?

A. MS- Excel
B. Internet Explorer
C. Power point
D. None of these


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Q: Microwave transmission , coaxial cables and fiber optics are the examples of :?

A. protocols
B. communication mode
C. Gateways
D. communication media


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Q: The process of converting analog signals to digital signal is called :?

A. Modulation
B. Sequencing
C. Digitizing
D. Demodulation


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Q: Half –duplex transmission means that transmission is possible in :?

A. One direction only
B. In both directions simultaneously
C. In both directions , but not simultaneously
D. None of these


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Q: The instruction that is permanently stored in the computer ROM is called :?

A. System software
B. Application software
C. Operating system
D. BIOS


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Q: Which layer of OSI model serves the user :?

A. Physical layer
B. Application layer
C. Presentation layer
D. Transport layer


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Q: Central Processing Unit (CPU) comprises of :?

A. Input and Output unit
B. Software and hardware
C. ALU and Control Unit
D. Storage Unit and ALU


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Q: As the size of the computer has been reduced, their operation speed has :?

A. Increased
B. Also reduced
C. Remained same
D. Become slow


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