Computer Abbreviations MCQs

Solved MCQs on common computer and IT abbreviations: RAM, ROM, BIOS, PDF, GUI, DBMS, VPN, IoT and more, frequently asked in clerk and computer operator tests.

1. 1

   RAM stands for:

   ARapid Action MemoryBRandom Access MemoryCRun Access ModuleDRead Access Memory

   Correct answer: B. Random Access Memory

   Random Access Memory is the computer's main working memory. It is volatile, so its contents are lost when power is off.

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2. 2

   ROM stands for:

   ARandom Only MemoryBRewritable Optical MediaCRun Once MemoryDRead Only Memory

   Correct answer: D. Read Only Memory

   Read Only Memory is non-volatile memory that stores firmware.

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3. 3

   BIOS stands for:

   ABinary Integrated Operating SystemBBuilt-In Operating SetupCBasic Internal Operating SoftwareDBasic Input/Output System

   Correct answer: D. Basic Input/Output System

   BIOS is firmware that tests hardware and starts the operating system. Modern PCs use UEFI, which does the same job.

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4. 4

   PDF stands for:

   APublic Data FormatBPrinted Document FileCPage Description FileDPortable Document Format

   Correct answer: D. Portable Document Format

   Adobe created the Portable Document Format so that documents look the same on any device.

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5. 5

   GUI stands for:

   AGlobal Unit InterfaceBGraphical User InterfaceCGraphic Utility InputDGeneral User Instruction

   Correct answer: B. Graphical User Interface

   A GUI lets users interact through windows, icons and menus instead of typed commands (a CLI, or Command Line Interface).

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6. 6

   DBMS stands for:

   AData Backup Management SystemBDatabase Management SystemCDigital Binary Memory SystemDData Block Monitoring Software

   Correct answer: B. Database Management System

   A DBMS, such as MySQL or Oracle, stores, organizes and retrieves data in databases.

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7. 7

   SQL stands for:

   ASystem Quality LevelBSequential Query ListCStandard Question LogicDStructured Query Language

   Correct answer: D. Structured Query Language

   SQL is the standard language for querying and managing relational databases.

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8. 8

   VPN stands for:

   AVerified Public NetworkBVisual Processing NodeCVirtual Private NetworkDVariable Protocol Number

   Correct answer: C. Virtual Private Network

   A VPN creates an encrypted connection over a public network such as the internet.

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9. 9

   IoT stands for:

   AInput Output TerminalBInternal Operating ToolCIntegration of TechnologyDInternet of Things

   Correct answer: D. Internet of Things

   The Internet of Things refers to everyday devices, such as smart meters and cameras, connected to the internet.

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10. 10

    VoIP stands for:

    AVoice over Internet ProtocolBVideo over IPCVirtual Online Internet PhoneDVoice Output Integrated Port

    Correct answer: A. Voice over Internet Protocol

    VoIP carries voice calls over the internet. Apps like WhatsApp calling use this technology.

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12. 11

    OCR stands for:

    AOptical Character RecognitionBOutput Control RegisterCOptical Code ReaderDOnline Content Reader

    Correct answer: A. Optical Character Recognition

    OCR software converts images of printed or handwritten text into editable digital text.

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13. 12

    MICR technology, used by banks to process cheques, stands for:

    AMicro Integrated Circuit ReaderBMagnetic Imaging Card ReaderCMachine Input Code ReaderDMagnetic Ink Character Recognition

    Correct answer: D. Magnetic Ink Character Recognition

    The numbers printed at the bottom of a cheque use magnetic ink so machines can read them quickly and reliably.

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14. 13

    UPS stands for:

    AUniversal Power SourceBUninterruptible Power SupplyCUltra Power SaverDUnit Power System

    Correct answer: B. Uninterruptible Power Supply

    A UPS provides battery backup so a computer keeps running briefly during a power cut.

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15. 14

    LCD stands for:

    ALiquid Crystal DisplayBLaser Coded DisplayCLight Control DeviceDLow Current Diode

    Correct answer: A. Liquid Crystal Display

    LCD screens use liquid crystals and a backlight. LED stands for Light Emitting Diode.

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16. 15

    JPEG, a common image format, stands for:

    AJoint Photographic Experts GroupBJoined Pixel Enhanced GraphicsCJust Photo Editing GroupDJava Picture Encoding Graphics

    Correct answer: A. Joint Photographic Experts Group

    JPEG is named after the committee that created the standard. It uses lossy compression, ideal for photographs.

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17. 16

    GIF stands for:

    AGraphics Interchange FormatBGrouped Image FormatCGeneral Image FileDGraphic Internet Frame

    Correct answer: A. Graphics Interchange Format

    The GIF format supports simple animations and is limited to 256 colours.

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18. 17

    DVD stands for:

    ADirect Video DisplayBDigital Versatile DiscCData Volume DriveDDigital Video Device

    Correct answer: B. Digital Versatile Disc

    DVDs store far more data than CDs, typically 4.7 GB on a single-layer disc.

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19. 18

    CD-ROM stands for:

    AComputer Disc Random Output MemoryBCentral Data Record Of MediaCCompact Data Rewritable Optical MemoryDCompact Disc Read-Only Memory

    Correct answer: D. Compact Disc Read-Only Memory

    A CD-ROM holds about 700 MB of data that can be read but not changed.

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20. 19

    HDD stands for:

    AHigh Density DiskBHard Disk DriveCHybrid Data DriveDHardware Data Device

    Correct answer: B. Hard Disk Drive

    An HDD stores data on spinning magnetic platters. An SSD (Solid State Drive) uses flash memory instead.

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21. 20

    SIM, as in a mobile SIM card, stands for:

    ASubscriber Identity ModuleBSystem Information MemoryCSecure Internet MobileDSingle Integrated Memory

    Correct answer: A. Subscriber Identity Module

    A SIM card securely stores the subscriber's identity so the mobile network can recognize them.

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