1. A DV camcorder is:
a) Capable of creating video in HDTV
b) Used to create digital video
c) Limited to the Direct Video format
d) A Denon Video brand product
Explanation: On September 12, 1958, Jack Kilby demonstrated the first working IC while working for Texas Instruments, although the U.S. patent office awarded the first patent for an integrated circuit to Robert Noyce of Fairchild.
2. What are the two terminals of a diode called?
a) Pentode and Triode
b) Gate and Drain
c) Drain and Source
d) Anode and Cathode
Explanation: Anode and Cathode
3. A coating of dust on a computer's main circuit boards has this probable consequence
a) Overheating
b) Short circuits
c) Slower hard disk
d) None
Explanation: Overheating
4. How many terminals does a BJT have?
a) 1
b) 5
c) 4
d) 3
Explanation: 3 terminals
5. Google is a:
a) Search Engine
b) Number in Math
c) Directory of images
d) Chat service on the web
Explanation: Google is a Search Engine
6. The "home page" of a web site is:
a) The largest page
b) The last page
c) The first page
d) The most colorful page
Explanation: The first page
7. ROM stands for:
a) Royal Ontario Museum
b) Read Only Memory
c) Read on Monday
d) Real Obsolute Memory
Explanation: Read Only Memory
8. HTML is used to
a) Plot complicated graphs
b) Create a webpages
c) Translate one language into another
d) Solve a equations
Explanation: HTML is used to create a webpages
9. In which decade was the telegraph invented
a) 1810s
b) 1840s
c) 1870s
d) 1890s
Explanation: On May 24, 1844, Samuel Morse send his famous message, "What hath God wrought?"
10. Another word for the CPU is:
a) Execute
b) Microprocessor
c) Micro chip
d) Decode
Explanation: Microprocessor
11. What is the difference between the Internet and an intranet?
a) One is public, the other is private
b) One is safer than the other
c) One can be monitored, the other can't
d) None of the above
Explanation: One is public, the other is private
12. In a Digital circuit, what is 1 'AND' 1?
a) 0
b) 1
c) 2
d) 4
Explanation: 1
13. Your computer has gradually slowed down. What's the most likely cause?
a) Overheating
b) Your processor chip is just getting old
c) Adware/spyware is infecting your PC
d) You dropped a sandwich in your computer
Explanation: Adware/spyware is infecting your PC
14. In which decade was the transistor invented?
a) 1940s
b) 1950s
c) 1960s
d) 1980s
Explanation: On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
15. A JPG is:
a) A Jumper Programmed Graphic
b) A format for an image file
c) A type of hard disk
d) A unit of measure for memory
Explanation: A JPG is a format for an image file
16. What's a web browser?
a) A kind of spider
b) A computer that stores WWW files
c) A person who likes to look at websites
d) A software program that allows you to access sites on the World Wide Web
Explanation: A software program that allows you to access sites on the World Wide Web
17. "https://www.prepbharat.com" - is an example of what?
a) A URL
b) An access code
c) A directory
d) A server
Explanation: A URL (Uniform {or Universal} Resource Locator) is an address for a specific document found on the Web. It is made up of several components: a domain name, the directories and sub-directories of the site, and the extension. To learn about these parts of a URL, visit the Evaluating Web Sites tutorial.
18. How many bits in a byte?
a) 4
b) 8
c) 16
d) 32
Explanation: 8
19. How do you subscribe to an Internet mailing list?
a) Contact your Internet service provider
b) Send e-mail to the list manager
c) Telephone the mailing list webmaster
d) Send a letter to the list
Explanation: Send e-mail to the list manager
20. Computers calculate numbers in what mode?
a) Decimal
b) Octal
c) Binary
d) None of the above
Explanation: Binary
21. What is a BJT?
a) Bit Junction Transfer
b) Bi-polar Junction Transistor
c) Bell Jar Transformer
d) Back Junction Transformer
Explanation: Bi-polar Junction Transistor
22. Which is not an internet protocol?
a) HTTP
b) FTP
c) STP
d) IP
Explanation: STP is not an internet protocol
23. Which of the following is not a valid domain name?
a) Www.yahoo.com
b) Www.yahoo.co.uk
c) Www.fr.yahoo
d) Www.yahoo.fr
Explanation: Www.fr.yahoo
24. AOL stands for:
a) Arranged Outer Line
b) America Over LAN
c) Audio Over LAN
d) America Online
Explanation: America Online
25. What are the three main search expressions, or operators, recognized by Boolean logic?
a) FROM, TO, WHOM
b) AND, OR, NOT
c) SEARCH, KEYWORD, TEXT
d) AND, OR, BUT
Explanation: The three most commonly used Boolean operators are: AND, OR, and NOT. On the Web, Boolean operators are used in advanced searches to combine search items. For example, an "AND" operator between two words ("football AND television") tells the search engine to find documents that contain both of these words
26. Experts say the healthiest way to view a computer monitor is by
a) Placing it 18 to 30 inches away from your eyes
b) Viewing from a darkened room
c) Adjusting the screen for maximum contrast
d) Using special glasses that filter out UV rays
Explanation: Placing it 18 to 30 inches away from your eyes
27. Name the terminals of a BJT.
a) Drain, Gate, Source
b) Positive, Negative, Neutral
c) Anode, Cathode, Triode
d) Emitter, Base, Collector
Explanation: Emitter, Base, Collector
28. What do you call a computer on a network that requests files from another computer?
a) A client
b) A host
c) A router
d) A web server
Explanation: A client
29. In which decade were the first successful diode and triode vacuum tubes invented?
a) 1800s
b) 1880s
c) 1890s
d) 1900s
Explanation: In 1904, John Ambrose Fleming invented the first practical electron tube called the 'Fleming Valve', which is a diode rectifier. In 1906, Lee de Forest invented the audion later called the triode, which provided signal amplification.
30. RAM stands for
a) Random Access Memory
b) Really Annoying Machine
c) Read A Manual
d) Real Absolute Memory
Explanation: Random Access Memory
31. Main circuit board in a computer is...
a) Decoder
b) Highlight
c) Select
d) Mother board
Explanation: Mother board
32. Name the terminals of an FET.
a) Drain, Gate, Source
b) Positive, Negative, Neutral
c) Anode, Cathode, Triode
d) Emitter, Base, Collector
Explanation: Drain, Gate, Source
33. Where are the contents of your computer's hard drive indexed?
a) Yahoo!
b) Google
c) MSN
d) None of the above
Explanation: None of the above
34. ISP stands for:
a) Internet Survey Period
b) Integrated Service Provider
c) Internet Security Protocol
d) Internet Service Provider
Explanation: Internet Service Provider
35. Internet Explorer is a:
a) Any person browsing the net
b) Web Browser
c) Graphing Package
d) News Reader
Explanation: Internet Explorer is a Web Browser
36. What is an FET?
a) Farad Effect Transformer
b) Field Effect Transformer
c) Field Effect Transistor
d) French Energy Transfer
Explanation: Field Effect Transistor
37. The speed of your net access is defined in terms of...
a) RAM
b) MHz
c) Kbps
d) Megabytes
Explanation: The speed of your net access is defined in terms of Kbps
38. How many diodes are in a full wave bridge rectifier?
a) 8
b) 2
c) 4
d) 3
Explanation: Device used to convert AC to DC voltage.
39. The "desktop" of a computer refers to:
a) The visible screen
b) The area around the monitor
c) The top of the mouse pad
d) The inside of a folder
Explanation: The "desktop" of a computer refers to the visible screen
40. Which of these is a search engine?
a) FTP
b) Google
c) Archie
d) ARPANET
Explanation: Google
41. A dual-layer DVD is valued because it:
a) Can hold more data
b) Contains a backup of the data stored
c) Uses a second layer to offer a speed increase
d) Creates alternative sound tracks
Explanation: A dual-layer DVD is valued because it can hold more data
42. To select text by shading as you drag the mouse arrow over the text is known as...
a) Clip art
b) To highlight
c) To fetch
d) To decode
Explanation: To highlight
43. Another word for 'Graphics for a word processor'?
a) Peripheral
b) Clip art
c) Highlight
d) Execute
Explanation: Clip art
44. What Designates where the next action occurs?
a) Decode
b) Highlight
c) Select
d) Mother board
Explanation: Select
45. Which was an early mainframe computer?
a) ENIAC
b) UNIC
c) BRAINIA
d) FUNTRIA
Explanation: ENIAC
46. Another name for a computer chip is ...
a) Execute
b) Micro chip
c) Microprocessor
d) Select
Explanation: Micro chip
47. "www" stands for:
a) World Wide Web
b) World Wide Wares
c) World Wide Wait
d) World Wide War
Explanation: World Wide Web
48. Which of these is not a computer?
a) Aptiva
b) Macintosh
c) Acorn
d) Paseo
Explanation: Paseo
49. Which of the following is not a programming language?
a) Basic
b) Java
c) Turing
d) C#
Explanation: Turing
50. Which of the following is not a method of accessing the web?
a) ISDN
b) Modem
c) CPU
d) DSL
Explanation: CPU
51. The letters, "DOS" stand for...
a) Data Out System
b) Disk Out System
c) Disk Operating System
d) Data Operating System
Explanation: Disk Operating System
52. What does CPU stand for?
a) Cute People United
b) Commonwealth Press Union
c) Computer Parts of USA
d) Central Processing Unit
Explanation: Central Processing Unit
53. Which of these is a valid e-mail address?
a) professor.at.learnthenet
b) www.learnthenet.com
c) professor@learnthenet.com
d) professor@learnthenet
Explanation: professor@learnthenet.com
54. Which device can be used to store charge?
a) Transistor
b) Diode
c) Capacitor
d) Resistor
Explanation: Capacitor
55. Modem stands for:
a) Modulator Demodulater
b) Monetary Devaluation Exchange Mechanism
c) Memory Demagnetization
d) Monetary Demarkation
Explanation: Modem stands for Modulator Demodulater
56. Hardware devices that are not part of the main computer system and are often added later to the system.
a) Peripheral
b) Clip art
c) Highlight
d) Execute
Explanation: Peripheral
57. On which of the following sites can you set up your email account:
a) www.linux.org
b) www.gre.org
c) www.syvum.com
d) www.hotmail.com
Explanation: www.hotmail.com
58. The main computer that stores the files that can be sent to computers that are networked together is:
a) Clip art
b) Mother board
c) Peripheral
d) File server
Explanation: File server
59. How can you catch a computer virus?
a) Sending e-mail messages
b) Using a laptop during the winter
c) Opening e-mail attachments
d) Shopping online
Explanation: Opening e-mail attachments
60. In which decade was the first solid state integrated circuit demonstrated?
a) 1950s
b) 1960s
c) 1970s
d) 1980s
Explanation: 1970s
61. What frequency range is the High Frequency band?
a) 100 kHz
b) 1 GHz
c) 30 to 300 MHz
d) 3 to 30 MHz
Explanation: The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
62. The first step to getting output from a laser is to excite an active medium. What is this process called?
a) Pumping
b) Exciting
c) Priming
d) Raising
Explanation: A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
63. What is the relationship between resistivity r and conductivity s?
a) R = s2
b) R = s
c) R > s
d) R = 1/s
Explanation: R = 1/s
64. Which motor is NOT suitable for use as a DC machine?
a) Permanent magnet motor
b) Series motor
c) Squirrel cage motor
d) Synchronous motor
Explanation: The squirrel cage motor is the only one without any connection to the armature.
65. A given signal's second harmonic is twice the given signal's __________ frequency?
a) Fourier
b) Foundation
c) Fundamental
d) Field
Explanation: A given signal's second harmonic is twice the given signal's fundamental frequency. Harmonics are generated when there are non-linearities in an amplifier (there are always non-linearities). The worse the non-linearities, the more harmonics. A signal at 27.5 MHz (approximate frequency for US citizen's band) would have a second harmonic at 55.0 MHz (on US channel 2!). Can you see why there might be problems? A CB operator might do well to place a low-pass filter on his radio.
66. In which decade was the ARRL founded?
a) 1940s
b) 1930s
c) 1920s
d) 1910s
Explanation: On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.
67. 'CD' computer abbreviation usually means ?
a) Command Description
b) Change Data
c) Copy Density
d) Compact Disc
Explanation: Compact Disc
68. '.BAK' extension refers usually to what kind of file?
a) Backup file
b) Audio file
c) Animation/movie file
d) MS Encarta document
Explanation: Backup file
69. Where is the headquarters of Intel located?
a) Redmond, Washington
b) Tucson, Arizona
c) Santa Clara, California
d) Richmond, Virginia
Explanation: Santa Clara, California
70. Who co-created the UNIX operating system in 1969 with Dennis Ritchie?
a) Bjarne Stroustrup
b) Steve Wozniak
c) Ken Thompson
d) Niklaus Wirth
Explanation: Ken Thompson
71. In which decade was the American Institute of Electrical Engineers (AIEE) founded?
a) 1850s
b) 1880s
c) 1930s
d) 1950s
Explanation: The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
72. What is part of a database that holds only one type of information?
a) Report
b) Field
c) Record
d) File
Explanation: Field
73. 'OS' computer abbreviation usually means ?
a) Order of Significance
b) Open Software
c) Operating System
d) Optical Sensor
Explanation: Operating System
74. In which decade with the first transatlantic radio broadcast occur?
a) 1850s
b) 1860s
c) 1870s
d) 1900s
Explanation: On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.
75. '.MOV' extension refers usually to what kind of file?
a) Image file
b) Animation/movie file
c) Audio file
d) MS Office document
Explanation: Animation/movie file
76. Sometimes computers and cache registers in a foodmart are connected to a UPS system. What does UPS mean?
a) United Parcel Service
b) Uniform Product Support
c) Under Paneling Storage
d) Uninterruptable Power Supply
Explanation: An uninterruptable power supply (UPS) is a backup power supply, such as a battery, that provides emergency power in the event that power is lost from the main supply.
77. Who co-founded Hotmail in 1996 and then sold the company to Microsoft?
a) Shawn Fanning
b) Ada Byron Lovelace
c) Sabeer Bhatia
d) Ray Tomlinson
Explanation: Sabeer Bhatia
78. '.TMP' extension refers usually to what kind of file?
a) Compressed Archive file
b) Image file
c) Temporary file
d) Audio file
Explanation: Temporary file
79. In the UK, what type of installation requires a fireman's switch?
a) Neon Lighting
b) High Pressure Sodium Lighting
c) Water Features
d) Hotel Rooms
Explanation: Twisting the yoke will tilt the picture. A projection color television uses three picture tubes and yokes for red, green and blue light.
80. 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...?
a) Transformer
b) Yoke
c) Capacitor
d) Diode
Explanation: PAL and SECAM are standards used in other countries. RGB stands for red, green, and blue - the colors of light used to create an image in a color tv set and is often used as a format name for computer monitors.
81. Compact discs, (according to the original CD specifications) hold how many minutes of music?
a) 74 mins
b) 56 mins
c) 60 mins
d) 90 mins
Explanation: According to many stories surrounding the origin of the compact disc, 74 minutes was settled on because it would comfortably contain all of Beethoven's 9th symphony on one disc. Although some stories reference a specific Sony higher-up who claimed this as his favorite piece of music, stories differ. All that's known for sure is that Sony insisted on this and won out over Phillips' original 60 minute proposal.
82. Once the active medium is excited, the first photons of light are produced by which physical process?
a) Blackbody radiation
b) Spontaneous emission
c) Synchrotron radiation
d) Planck's oscillation
Explanation: Spontaneous emission is what you see with most "glow in the dark" toys. You excite the toy by exposing it to bright light, then the toy glows in the dark by spontaneously emitting photons as the excited atoms relax back down to their normal state.
83. 'DTP' computer abbreviation usually means ?
a) Digital Transmission Protocol
b) DeskTop Publishing
c) Data Type Programming
d) Document Type Processing
Explanation: DeskTop Publishing
84. The average power (in watts) used by a 20 to 25 inch home color television is...?
a) 70-100
b) 25-50
c) 500-800
d) Over 1000
Explanation: About the same as as the most popular light bulb size.
85. What does AC and DC stand for in the electrical field?
a) Alternating Current and Direct Current
b) A Rock Band from Australia
c) Average Current and Discharged Capacitor
d) Atlantic City and District of Columbia
Explanation: Electricity is voltage and current. Voltage is electrical pressure, and current is the flow of charged particles. The difference between alternating current (AC) and direct current (DC) is that the electrons in an AC circuit regularly reverse their direction. In a DC circuit electrons always flow in the same direction.
86. In which year was MIDI(dress) introduced?
a) 1987
b) 1983
c) 1973
d) 1977
Explanation: 1983
87. What does the term PLC stand for?
a) Programmable Lift Computer
b) Program List Control
c) Programmable Logic Controller
d) Piezo Lamp Connector
Explanation: Used in manufacturing, engineering, and process operations.
88. When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
a) Fundamental
b) Fall
c) Force
d) Figure
Explanation: "Noise figure" is one critical parameter for determining the "quality" of a low-noise, small-signal, amplifier, and perhaps more importantly, the sensitivity of the overall receiver system. It is especially important for VHF (very high frequency) - and higher frequency - designs where most of the undesired "noise" (noise that masks or overpowers the desired signals) is generated internal to the electronics itself. In HF (high frequency) applications, atmospheric noise plays a much larger role in determining overall useful sensitivity, so a circuit's "noise figure" is less important.
89. 'DB' computer abbreviation usually means ?
a) Database
b) Double Byte
c) Data Block
d) Driver Boot
Explanation: Database
90. '.INI' extension refers usually to what kind of file?
a) Image file
b) System file
c) Hypertext related file
d) Image Color Matching Profile file
Explanation: System file