Practice MCQ technology

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3682 What is part of a database that holds only one type of information?
Options:Report,    Field,    Record,    File

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3683 'OS' computer abbreviation usually means ?
Options:Order of Significance,    Open Software,    Operating System,    Optical Sensor

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3684 '.MOV' extension refers usually to what kind of file?
Options:Image file,    Animation/movie file,    Audio file,    MS Office document

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3685 Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
Options:Sound,    Remote control,    Color balance,    High voltage

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3686 Which is a type of Electrically-Erasable Programmable Read-Only Memory?
Options:Flash,    Flange,    Fury,    FRAM

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3687 The purpose of choke in tube light is ?
Options:To decrease the current,    To increase the current,    To decrease the voltage momentarily,    To increase the voltage momentarily

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3688 '.MPG' extension refers usually to what kind of file?
Options:WordPerfect Document file,    MS Office document,    Animation/movie file,    Image file

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3689 Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?
Options:Alan Turing,    Jeff Bezos,    George Boole,    Charles Babbage

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3690 Who developed Yahoo?
Options:Dennis Ritchie & Ken Thompson,    David Filo & Jerry Yang,    Vint Cerf & Robert Kahn,    Steve Case & Jeff Bezos

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3691 Made from a variety of materials, such as carbon, which inhibits the flow of current...?
Options:Choke,    Inductor,    Resistor,    Capacitor

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3692 The most common format for a home video recorder is VHS. VHS stands for...?
Options:Video Home System,    Very high speed,    Video horizontal standard,    Voltage house standard

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3693 What does VVVF stand for?
Options:Variant Voltage Vile Frequency,    Variable Velocity Variable Fun,    Very Very Vicious Frequency,    Variable Voltage Variable Frequency

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3694 What frequency range is the High Frequency band?
Options:100 kHz,    1 GHz,    30 to 300 MHz,    3 to 30 MHz

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3695 The first step to getting output from a laser is to excite an active medium. What is this process called?
Options:Pumping,    Exciting,    Priming,    Raising

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3696 What is the relationship between resistivity r and conductivity s?
Options:R = s2,    R = s,    R > s,    R = 1/s

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3697 Which motor is NOT suitable for use as a DC machine?
Options:Permanent magnet motor,    Series motor,    Squirrel cage motor,    Synchronous motor

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3698 A given signal's second harmonic is twice the given signal's __________ frequency...?
Options:Fourier,    Foundation,    Fundamental,    Field

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3699 In which year was MIDI(Musical Instrument Digital Interface) introduced?
Options:1987,    1983,    1973,    1977

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3700 What does the term PLC stand for?
Options:Programmable Lift Computer,    Program List Control,    Programmable Logic Controller,    Piezo Lamp Connector

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3701 When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
Options:Fundamental,    Fall,    Force,    Figure

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3702 'DB' computer abbreviation usually means ?
Options:Database,    Double Byte,    Data Block,    Driver Boot

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3703 '.INI' extension refers usually to what kind of file?
Options:Image file,    System file,    Hypertext related file,    Image Color Matching Profile file

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3704 The sampling rate, (how many samples per second are stored) for a CD is...?
Options:48.4 kHz,    22,050 Hz,    44.1 kHz,    48 kHz

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3705 Who created Pretty Good Privacy (PGP)?
Options:Phil Zimmermann,    Tim Berners-Lee,    Marc Andreessen,    Ken Thompson

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3706 What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
Options:URL (Universal Resource Locator),    LAN (Local Area Network),    WAN (Wide Area Network),    World Wide Web

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3707 After the first photons of light are produced, which process is responsible for amplification of the light?
Options:Blackbody radiation,    Stimulated emission,    Planck's radiation,    Einstein oscillation

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3708 Which is NOT an acceptable method of distributing small power outlets throughout an open plan office area?
Options:Power Poles,    Power Skirting,    Flush Floor Ducting,    Extension Cords

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3709 Sometimes computers and cache registers in a foodmart are connected to a UPS system. What does UPS mean?
Options:United Parcel Service,    Uniform Product Support,    Under Paneling Storage,    Uninterruptable Power Supply

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3710 Who co-founded Hotmail in 1996 and then sold the company to Microsoft?
Options:Shawn Fanning,    Ada Byron Lovelace,    Sabeer Bhatia,    Ray Tomlinson

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3711 '.TMP' extension refers usually to what kind of file?
Options:Compressed Archive file,    Image file,    Temporary file,    Audio file

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3712 In the UK, what type of installation requires a fireman's switch?
Options:Neon Lighting,    High Pressure Sodium Lighting,    Water Features,    Hotel Rooms

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3713 The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...?
Options:Transformer,    Yoke,    Capacitor,    Diode

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3714 In the United States the television broadcast standard is...?
Options:PAL,    NTSC,    SECAM,    RGB

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3715 In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about...?
Options:500 volts,    5 thousand volts,    25 thousand volts,    100 thousand volts

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3716 The transformer that develops the high voltage in a home television is commonly called a...?
Options:Tesla coil,    Flyback,    Yoke,    Van de Graaf

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3717 Which consists of two plates separated by a dielectric and can store a charge?
Options:Inductor,    Capacitor,    Transistor,    Relay

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3718 What do we call a collection of two or more computers that are located within a limited distance of each other and that are connected to each other directly or indirectly?
Options:Inernet,    Interanet,    Local Area Network,    Wide Area Network

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3719 '.JPG' extension refers usually to what kind of file?
Options:System file,    Animation/movie file,    MS Encarta document,    Image file

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3720 What does AM mean?
Options:Angelo marconi,    Anno median,    Amplitude modulation,    Amperes

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3721 In what year was the "@" chosen for its use in e-mail addresses?
Options:1976,    1972,    1980,    1984

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3722 '.TXT' extension refers usually to what kind of file?
Options:Text File,    Image file,    Audio file,    Adobe Acrobat file

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3723 What was the first ARPANET message?
Options:"lo",    "hello world",    "mary had a little lamb",    "cyberspace, the final frontier"

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3724 The NTSC (National Television Standards Committee) is also used in the country of...?
Options:Japan,    France,    Germany,    England

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3725 "FET" is a type of transistor, Its full name is ________ Effect Transistor...?
Options:Field,    Factor,    Flash,    Force

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3726 What are three types of lasers?
Options:Gas, metal vapor, rock,    Pointer, diode, CD,    Diode, inverted, pointer,    Gas, solid state, diode

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3727 What will a UPS be used for in a building?
Options:To provide power to essential equipment,    To monitor building electricity use,    To carry messages between departments,    To control lighting and power systems

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3728 Who built the world's first binary digit computer: Z1...?
Options:Konrad Zuse,    Ken Thompson,    Alan Turing,    George Boole

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3729 Compact discs, (according to the original CD specifications) hold how many minutes of music?
Options:74 mins,    56 mins,    60 mins,    90 mins

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3730 Once the active medium is excited, the first photons of light are produced by which physical process?
Options:Blackbody radiation,    Spontaneous emission,    Synchrotron radiation,    Planck’s oscillation

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3731 'DTP' computer abbreviation usually means ?
Options:Digital Transmission Protocol,    DeskTop Publishing,    Data Type Programming,    Document Type Processing

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