Information Technology Questions And Answers

41⟩ In which decade with the first transatlantic radio broadcast occur?

1900s.

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.

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42⟩ In which decade was the American Institute of Electrical Engineers (AIEE) founded?

1880s.

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).

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43⟩ What does VVVF stand for?

Variable Voltage Variable Frequency.

It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.

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44⟩ What will a UPS be used for in a building?

To provide power to essential equipment.

UPS stands for Uninterruptible Power Supply. Examples of equipment that may require a UPS supply are computers, fire detection systems, hospital operating theatre equipment and escape route lighting.

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45⟩ What are three types of lasers?

Gas, solid state, diode.

The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.

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46⟩ After the first photons of light are produced, which process is responsible for amplification of the light?

Stimulated emission.

The word "laser" is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.

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47⟩ In which country The NTSC (National Television Standards Committee) is also used?

Japan.

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48⟩ "FET" is a type of transistor, Its full name is ________ Effect Transistor?

Field.

The terminals of FETs are called gate, drain and source. You might be more familiar with bipolar junction transistors (BJTs), which have terminals called base, collector and emitter. FETs were conceptualized first, but BJTs were easier to produce and so developed sooner.

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49⟩ Which is not an acceptable method of distributing small power outlets throughout an open plan office area?

Extension Cords.

Extension cords can be a tripping hazard, and can be easily damaged, causing an unsafe situation. There are many ways of safely getting power to each work place, where wiring is protected and concealed.

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50⟩ '.MOV' extension refers usually to what kind of file?

Animation/movie file

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51⟩ A dual-layer DVD is valued because it

Can hold more data

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52⟩ What is JPG?

A format for an image file.

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53⟩ Another word for 'Graphics for a word processor'?

Clip art

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54⟩ What was the first ARPANET message?

"lo"

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55⟩ '.TXT' extension refers usually to what kind of file?

Text File.

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56⟩ '.TMP' extension refers usually to what kind of file?

Temporary file.

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57⟩ Who created Pretty Good Privacy (PGP)?

Phil Zimmermann.

Phil Zimmermann created the first version of PGP encryption in 1991. Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting and decrypting texts, E-mails, files, directories and whole disk partitions to increase the security of e-mail communications.

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58⟩ 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?

WAN (Wide Area Network)

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59⟩ Compact discs, (according to the original CD specifications) hold how many minutes of music?

74 mins.

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.

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60⟩ 'DTP' computer abbreviation usually means?

DeskTop Publishing.

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180 Information Technology Questions And Answers

41⟩ In which decade with the first transatlantic radio broadcast occur?

42⟩ In which decade was the American Institute of Electrical Engineers (AIEE) founded?

43⟩ What does VVVF stand for?

44⟩ What will a UPS be used for in a building?

45⟩ What are three types of lasers?

46⟩ After the first photons of light are produced, which process is responsible for amplification of the light?

47⟩ In which country The NTSC (National Television Standards Committee) is also used?

48⟩ "FET" is a type of transistor, Its full name is ________ Effect Transistor?

49⟩ Which is not an acceptable method of distributing small power outlets throughout an open plan office area?

50⟩ '.MOV' extension refers usually to what kind of file?

51⟩ A dual-layer DVD is valued because it

52⟩ What is JPG?

53⟩ Another word for 'Graphics for a word processor'?

54⟩ What was the first ARPANET message?

55⟩ '.TXT' extension refers usually to what kind of file?

56⟩ '.TMP' extension refers usually to what kind of file?

57⟩ Who created Pretty Good Privacy (PGP)?

58⟩ 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?

59⟩ Compact discs, (according to the original CD specifications) hold how many minutes of music?

60⟩ 'DTP' computer abbreviation usually means?

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Information Technology

Home Information Technology (IT) Information Technology

180 Information Technology Questions And Answers

41⟩ In which decade with the first transatlantic radio broadcast occur?

42⟩ In which decade was the American Institute of Electrical Engineers (AIEE) founded?

43⟩ What does VVVF stand for?

44⟩ What will a UPS be used for in a building?

45⟩ What are three types of lasers?

46⟩ After the first photons of light are produced, which process is responsible for amplification of the light?

47⟩ In which country The NTSC (National Television Standards Committee) is also used?

48⟩ "FET" is a type of transistor, Its full name is ________ Effect Transistor?

49⟩ Which is not an acceptable method of distributing small power outlets throughout an open plan office area?

50⟩ '.MOV' extension refers usually to what kind of file?

51⟩ A dual-layer DVD is valued because it

52⟩ What is JPG?

53⟩ Another word for 'Graphics for a word processor'?

54⟩ What was the first ARPANET message?

55⟩ '.TXT' extension refers usually to what kind of file?

56⟩ '.TMP' extension refers usually to what kind of file?

57⟩ Who created Pretty Good Privacy (PGP)?

58⟩ 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?

59⟩ Compact discs, (according to the original CD specifications) hold how many minutes of music?

60⟩ 'DTP' computer abbreviation usually means?

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