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Computer & Information Technology

54 questions in Science & Technology.

Asked in 2018, 2017, 2016, 2015, 2014, 2011, 2010, 2009, 2007, 2006, 2005, 2004, 2000

2018 · Q66Science & TechnologyComputer & Information Technologyeasy

When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm which causes your geyser to be switched on automatically. The smart mirror in your bathroom shows the day's weather and also indicates the level of water in your overhead tank. After you take some groceries from your refrigerator for making breakfast, it recognises the shortage of stock in it and places an order for the supply of fresh grocery items. When you step out of your house and lock the door, all lights, fans, geysers and AC machines get switched off automatically. On your way to office, your car warns you about traffic congestion ahead and suggests an alternative route, and if you are late for a meeting, it sends a message to your office accordingly. In the context of emerging communication technologies, which one of the following terms best applies to the above scenario ?

  1. (a)Border Gateway Protocol
  2. (b)Internet of Things
  3. (c)Internet Protocol
  4. (d)Virtual Private Network
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Official answer(b) Internet of Things

2017 · Q74Science & TechnologyComputer & Information Technologyeasy

Organic Light Emitting Diodes (OLEDs) are used to create digital display in many devices. What are the advantages of OLED displays over Liquid Crystal displays ? 1. OLED displays can be fabricated on flexible plastic substrates. 2. Roll-up displays embedded in clothing can be made using OLEDs. 3. Transparent displays are possible using OLEDs. Select the correct answer using the code given below :

  1. (a)1 and 3 only
  2. (b)2 only
  3. (c)1, 2 and 3
  4. (d)None of the above statements is correct
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Official answer(c) 1, 2 and 3

2016 · Q66Science & TechnologyComputer & Information Technologymoderate

With reference to 'Bitcoins', sometimes seen in the news, which of the following statements is/are correct? 1. Bitcoins are tracked by the Central Banks of the countries. 2. Anyone with a Bitcoin address can send and receive Bitcoins from anyone else with a Bitcoin address. 3. Online payments can be sent without either side knowing the identity of the other. Select the correct answer using the code given below.

  1. (a)1 and 2 only
  2. (b)2 and 3 only
  3. (c)3 only
  4. (d)1, 2 and 3
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Official answer(b) 2 and 3 only

2016 · Q84Science & TechnologyComputer & Information Technologyeasy

Regarding 'DigiLocker', sometimes seen in the news, which of the following statements is/are correct? 1. It is a digital locker system offered by the Government under Digital India Programme. 2. It allows you to access your e-documents irrespective of your physical location. Select the correct answer using the code given below.

  1. (a)1 only
  2. (b)2 only
  3. (c)Both 1 and 2
  4. (d)Neither 1 nor 2
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Official answer(c) Both 1 and 2

2015 · Q32Science & TechnologyComputer & Information Technologymoderate

With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct? 1. It is a contactless communication technology that uses electromagnetic radio fields. 2. NFC is designed for use by devices which can be at a distance of even a metre from each other. 3. NFC can use encryption when sending sensitive information. Select the correct answer using the code given below.

  1. (a)1 and 2 only
  2. (b)3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
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Official answer(c) 1 and 3 only

2011 · Q57Science & TechnologyComputer & Information Technologyeasy

What is the difference between Bluetooth and Wi-Fi devices ?

  1. (a)Bluetooth uses 2.4 GHz radio frequency band, whereas Wi-Fi can use 2.4 GHz or 5 GHz frequency band
  2. (b)Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
  3. (c)When information is transmitted between two devices using Bluetooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
  4. (d)The statements (a) and (b) given above are correct in this context
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Official answer(a) Bluetooth uses 2.4 GHz radio frequency band, whereas Wi-Fi can use 2.4 GHz or 5 GHz frequency band

2011 · Q69Science & TechnologyComputer & Information Technologymoderate

A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? 1. DVD supports Standard Definition video while BD supports High Definition video. 2. Compared to a DVD, the BD format has several times more storage capacity. 3. Thickness of BD is 2.4 mm while that of DVD is 1.2 mm. Which of the statements given above is/are correct?

  1. (a)1 only
  2. (b)1 and 2 only
  3. (c)2 and 3 only
  4. (d)1, 2 and 3
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Official answer(b) 1 and 2 only

2011 · Q99Science & TechnologyComputer & Information Technologyeasy

What is "Virtual Private Network"?

  1. (a)It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization.
  2. (b)It is a computer network across a public internet that provides users access to their organization's network while maintaining the security of the information transmitted.
  3. (c)It is a computer network in which users can access a shared pool of computing resources through a service provider.
  4. (d)None of the statements (a), (b) and (c) given above is a correct description of Virtual Private Network.
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Official answer(b) It is a computer network across a public internet that provides users access to their organization's network while maintaining the security of the information transmitted.

2004 · Q144Science & TechnologyComputer & Information Technologymoderate

Consider the following statements: 1. Smart Card is a plastic card with an embedded microchip. 2. Digital Technology is primarily used with new physical communication medium such as satellite and fibre optics transmission. 3. A digital library is a collection of documents in an organized electronic form available on the Internet only. Which of these statements given above is/are correct?

  1. (a)3 only
  2. (b)1 and 2
  3. (c)2 and 3
  4. (d)1, 2 and 3
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Official answer(b) 1 and 2