Tag: information technology

Questions Related to information technology

The width of a webpage is 768 pixels. An user designs a webpage with a width twice the actual width. Which component of the webpage can be used to view the full website

different modes of communication and their uses information technology communication systems physics

  1. Scroll bar

  2. Address bar

  3. Home button

  4. Stop button

Show answer
Correct Option: A
Explanation:

Scroll button can be used to view any website of variable width or height. The website can be even for 2 or 3 pages, scrolling down helps an user to view the page completely, just like turning the pages of a notebook

Which of the following is not a disadvantage of conducting focus groups online?

different modes of communication and their uses information technology communication systems physics

  1. Those who are fastest at typing may dominate the discussions.

  2. It is more difficult to establish rapport without non-verbal cues.

  3. Normally shy participants may find it easier to "speak" in this setting.

  4. It is easier for people exit the focus group online.

Show answer
Correct Option: C
Explanation:

Virtual focus groups have some advantages, such as making it easier for shy or reticent people to participate in the relatively anonymous setting of an online discussion. However, the method also has numerous disadvantages that stem from this lack of face-to-face interaction: it is more difficult to build rapport online and so the researcher may find it harder to prevent people from dominating the discussions, ignoring questions or dropping out of the study altogether.

A local area network is 

different modes of communication and their uses information technology communication systems physics

  1. a collection of two or more connected computers sharing certain resources in a relatively small geographic location, often in the same building

  2. a collection of more than twenty connected computers sharing certain resources in a relatively small geographic location, often in the same building

  3. a collection of two or more connected computers sharing only system resources in a relatively small geographic location, often in the same building

  4. a collection of two or more connected computers sharing file storage space only in a relatively small geographic location, often in the same building

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Correct Option: A

 HTML and XML are markup languages 

different modes of communication and their uses information technology communication systems physics

  1. Specially development for the web

  2. Are based on SGML

  3. Are versions of SGML

  4. Independent of SGML

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Correct Option: B

 In order to interpret XML documents one should

different modes of communication and their uses information technology communication systems physics

  1. Use standardized tags

  2. Have a document type definition which defines the tags

  3. Define the tags separately

  4. Specify tag filename

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Correct Option: B

The packets of an internet message

different modes of communication and their uses information technology communication systems physics

  1. take a predetermined path

  2. take a path based on packet priority

  3. go along different paths based on path availability

  4. take the shortest path from source to destination

Show answer
Correct Option: C
Explanation:

All data transfers across the Internet work on this principle. It helps networks manage traffic -- if one pathway becomes clogged with traffic, packets can go through a different route. This is different from the traditional phone system, which creates a dedicated circuit through a series of switches. All information through the old analog phone system would pass back and forth between a dedicated connection. If something happened to that connection, the call would end.

That's not the case with traffic across IP networks. If one connection should fail, data can travel across an alternate route. This works for individual networks and the Internet as a whole. For instance, even if a packet doesn't make it to the destination, the machine receiving the data can determine which packet is missing by referencing the other packets. It can send a message to the machine sending the data to send it again, creating redundancy. This all happens in the span of just a few milliseconds.

A wide area network is 

different modes of communication and their uses information technology communication systems physics

  1. a collection of two or more connected computers sharing certain resources in a relatively small geographic location, often in the same building

  2. a collection of two or more LANs sharing certain resources in a relatively small geographic location, often in the same building

  3. a collection of two or more LANs sharing certain resources in a relatively large geographic location, often in the same building

  4. None of the above

Show answer
Correct Option: C
Explanation:

A WAN consists of two or more LANs. The computers are farther apart and are linked by telephone lines or radio waves. Eg: Internet

Internet data is broken up as 

different modes of communication and their uses information technology communication systems physics

  1. fixed length packets

  2. variable length packets

  3. not packetized

  4. 64 bytes packets

Show answer
Correct Option: B
Explanation:

Information transmitted through internet is broken down in terms of small units of data called packets and are routed through a network based on the destination address contained within each packet. Breaking communication down into packets allows the same data path to be shared among many users in the network. This type of communication between sender and receiver is known as connectionless (rather than dedicated). Most traffic over the Internet uses packet switching and the Internet is basically a connectionless network.

T.V. Transmission requires _________ waves,which are not bounced by Ionosphere.

different modes of communication and their uses information technology communication systems physics

  1. low-frequency RF

  2. low-frequency carrier

  3. high-frequency carrier

  4. low-frequency audio

Show answer
Correct Option: C
Explanation:

As the transmission of television is done through satellite's . So, the carrier waves should be of high frequency , so , the carrier waves should be of high frequency , so that they may clear the Ionosphere and provide a smooth transmission  between a satellite and television set