Organization, CPU, I/O Devices Questions with Solutions

75 questions72 easy3 medium

This topic covers how a computer is organised internally and how it communicates with the outside world. The central processing unit (CPU) has three main parts: the arithmetic logic unit (ALU), which performs calculations and comparisons; the control unit (CU), which directs operations; and registers, which hold data temporarily. The topic also covers the system bus (data, address and control buses), the motherboard, and clock speed. Input and output (I/O) devices are the other main part. Input devices include the keyboard, mouse, scanner, microphone, OCR, OMR, MICR and barcode readers. Output devices include monitors, printers (impact and non-impact), plotters and speakers. Exam questions often ask you to classify a device as input, output or both (such as a touchscreen), or to identify which device is used for a particular purpose, such as MICR for bank cheques. Practise the CPU and I/O device questions below. Each answer includes an explanation.

  1. Q41.

    The CPU comprises of Control, Memory, and _________ Units.

    A. MicroprocessorB. Arithmetic/LogicC. OutputD. ROM
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  2. Q42.

    _________ devices convert human-understandable data and programs into a form that the computer can process.

    A. PrintingB. OutputC. Solid stateD. Input
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  3. Q43.

    Which of the following is an example of an input device?

    A. MonitorB. ScannerC. PrinterD. CD
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  4. Q44.

    The hard drive is normally located

    A. Next to the printerB. Plugged into the back of the computerC. Underneath the monitorD. Inside the system base unit
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  5. Q45.

    Which of the following is not a part of storage in the computer?

    A. ROMB. RAMC. Hard DiskD. Plotter
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  6. Q46.

    A (n) ________ device is any hardware component that allows you to enter data and instructions into a computer.

    A. OutputB. TerminalC. InputD. Communications
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  7. Q47.

    What does the acronym BIOS stand for?

    A. Basic Input/Output SystemizationB. Basic Input/Output SystemC. Basic Inner/Output systemD. Basic Internal Output System
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  8. Q48.

    What type of device is a computer monitor?

    A. OutputB. InputC. StorageD. Processing
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  9. Q49.

    What is the full form of CRT?

    A. Cathode Ray TubeB. Computer Resolution and TransparencyC. Cathode Resolution, and TransparencyD. Computer RAM Trash
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  10. Q50.

    To fit in notebook and many handheld computers, the keyboards usually are

    A. SmallerB. FewerC. FirmerD. Both A and B
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  11. Q51.

    Input Device that can read character directly from ordinary piece of paper is _________.

    A. OCRB. OMRC. MSID. POS
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  12. Q52.

    Which among the following device is used for live video chat with other person on desktop or laptop?

    A. softwareB. WebcamC. ModemD. Internet
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  13. Q53.

    _________ is a device that allows the computer to keep running for at least a short time when the primary power source is lost.

    A. Uninterrupted Power SupplyB. Interrupted Power SupplyC. Uninterrupted Power SystemD. Uninterrupted light Supply
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  14. Q54.

    The central processing unit CPU _______.

    A. contains the electronic circuits that cause processing to occurB. make the information resulting from processing available for useC. allows data, programs, commands and user responses to be entered into a computerD. consists of electronic components that store data
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  15. Q55.

    Which part of the computer can display the user's work ?

    A. MouseB. KeyboardC. Disk DriveD. Monitor
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  16. Q56.

    UPS stands for

    A. Universal Process SystemB. Uninterruptible Power SourceC. User Payload SerialD. Utility Packet Storage
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  17. Q57.

    USB stands for

    A. United Serial BusB. Universal Serial By-PassC. Universal System BusD. Universal Serial Bus
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  18. Q58.

    What does P stand for in CPU ?

    A. ProcessingB. ProgramC. PortalD. Power
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  19. Q59.

    In a computer, processing work is done by

    A. ALUB. RegisterC. CompilersD. CPU
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  20. Q60.

    The unique signal, generated by a device, that tells the operating system that it is in need of immediate attention is called

    A. ActionB. EventC. InterruptD. Stall
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