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“Information Technology Frequently Asked Questions in various Information Technology based job Interviews by interviewer. The set of questions here ensures that you offer a perfect answer posed to you. So get preparation for your new job hunting”

180 Information Technology Questions And Answers

61⟩ The input used by an antenna or cable to a TV set uses frequencies called?

RF.

RF is radio frequency. IF is intermediate frequency used inside the TV for processing. AF is audio frequency. SAP is second audio program which may have another language or other soundtrack as an option to the main soundtrack.

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62⟩ The average power (in watts) used by a 20 to 25 inch home color television is?

70-100.

About the same as as the most popular light bulb size.

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63⟩ How many bits is a byte?

8.

The byte (/ˈbaɪt/) is a unit of digital information in computing and telecommunications that most commonly consists of eight bits.

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64⟩ What does AC and DC stand for in the electrical field?

Alternating Current and Direct Current.

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.

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65⟩ The sampling rate, (how many samples per second are stored) for a CD is...?

44.1 kHz.

CDs reproduce 44,100 samples per second. Which has a maximum frequency reproduction of 22,050 Hz, or just a hair past the upper limit of human hearing. In this way CDs can theoretically reproduce any frequency in the human hearing range.

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66⟩ 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?

Yoke.

Twisting the yoke will tilt the picture. A projection color television uses three picture tubes and yokes for red, green and blue light.

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67⟩ What's a web browser?

A software program that allows you to access sites on the World Wide Web.

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68⟩ http//www.globalguideline.com - is an example of what?

A URL.

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 subdirectories of the site, and the extension. To learn about these parts of a URL, visit the Evaluating Web Sites tutorial.

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69⟩ Changing computer language of 1's and 0's to characters that a person can understand is?

Decode.

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70⟩ The "desktop" of a computer refers to?

The visible screen.

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71⟩ Which device can be used to store charge?

Capacitor.

Can be used in filtering circuits, also.

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72⟩ What is the difference between the Internet and an intranet?

One is public, the other is private.

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73⟩ Blue is what number on the resistor color code?

6.

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74⟩ Modem stands for?

Modulator Demodulater.

A modem (modulator-demodulator) is a device or program that enables a computer to transmit data over, for example, telephone or cable lines.

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75⟩ Your computer has gradually slowed down. What's the most likely cause?

Adware/spyware is infecting your PC.

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76⟩ In a Digital circuit, what is 1 'AND' 1?

1.

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77⟩ To select text by shading as you drag the mouse arrow over the text is known as?

To highlight

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78⟩ List a name of any search engine?

Google.

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79⟩ Once the active medium is excited, the first photons of light are produced by which physical process?

Spontaneous emission.

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.

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80⟩ Computers calculate numbers in what mode?

Binary.

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