{"id":3213,"date":"2022-05-31T11:01:51","date_gmt":"2022-05-31T05:31:51","guid":{"rendered":"https:\/\/cbsepython.in\/?p=3213"},"modified":"2022-06-12T13:20:38","modified_gmt":"2022-06-12T07:50:38","slug":"important-computer-network-class-12-question-answer","status":"publish","type":"post","link":"https:\/\/cbsepython.in\/important-computer-network-class-12-question-answer\/","title":{"rendered":"Important Computer Network Class 12 Question Answer Computer Science\/ Informatics Practices"},"content":{"rendered":"

Important Computer Network Class 12 Question Answer for Computer Science\/ Informatics Practices<\/span><\/h2>\n

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Q 1- What is a Computer Network?\u00a0<\/span><\/strong><\/p>\n

Ans: A computer network is a set of interconnected computers sharing resources located on or provided by network nodes.<\/span><\/p>\n

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Q. 2 Who is considered as the creator(s) of the Internet?<\/span><\/strong><\/p>\n

Ans: Vinton Cerf and Bob Kahn<\/span><\/p>\n

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Q. 3 In which year ARPANET was formed?<\/span><\/strong><\/p>\n

Ans: 1969<\/span><\/p>\n

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Q.4 What is the full form of NSFNET?<\/span><\/strong><\/p>\n

Ans: National Science Foundation Network<\/span><\/p>\n

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Q. 5 Which project is considered as the foundation of the Internet?<\/span><\/strong><\/p>\n

Ans: ARPANET (Advanced Research Projects Agency NETwork)<\/span><\/p>\n

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Q. 6 Write the name of the first web browser.<\/strong> <\/span><\/p>\n

Ans: World Wide Web created by Tim Berners Lee in 1990<\/span><\/p>\n

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Q. 7 Which protocol became the foundation of the Internet?<\/strong> <\/span><\/p>\n

Ans: Transmission Control Protocol\/Internet Protocol (TCP\/IP)<\/span><\/p>\n

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Q.8 List any 4 services provided by the Internet.<\/span><\/strong><\/p>\n

Ans: Email, Instant-Messaging, Sharing of Devices and Directory Sharing etc.<\/span><\/p>\n

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Q. 9 What is the difference between the Internet and the World Wide Web?<\/span><\/strong><\/p>\n

Ans: The Internet is a me\u00a0 \u00a0of connecting a computer to any other computer anywhere in the world whereas the World Wide Web is a collection of information which is accessed via the Internet.<\/span><\/p>\n

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Q. 10 What is interspace and how is it different from the Internet?<\/strong> <\/span><\/p>\n

Ans: InterSpace is a client-server software program, allows multiple users to communicate online with real-time audio, video or text chat in dynamic 3D environments. It provides the most\u00a0advanced form of communication available on the Internet today. InterSpace is a vision of what the Internet will become in the future.<\/span><\/p>\n

Important Computer Network Class 12 Question Answer<\/h3>\n

Q. 11 Give an example of WAN (Wide Area Network)<\/strong> <\/span><\/p>\n

Ans: Internet<\/span><\/p>\n

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Q. 12 Write the full form of WWW.<\/strong> <\/span><\/p>\n

Ans: World Wide Web<\/span><\/p>\n

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Q. 13 When was the original ARPANET (Advanced Research Projects Agency NETwork) shut down?<\/strong> <\/span><\/p>\n

Ans: 1990<\/span><\/p>\n

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Q. 14 Name the types of networks based on the component roles.<\/strong> <\/span><\/p>\n

Ans: Client-Server Networks and Peer-to-Peer Networks<\/span><\/p>\n

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Q. 15 While transferring data on the internet, the message is divided into small units called as_______<\/span><\/strong><\/p>\n

Ans: Packets<\/span><\/p>\n

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Q. 16 Give one example of PAN (Personal Area Network)<\/span><\/strong><\/p>\n

Ans: Computer network formed by connecting a laptop with a mobile phone\u2019s hotspot internet. Basically, the network formed by connecting personal devices is called a Personal Area Network.<\/span><\/p>\n

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Q. 17 Give one example of LAN (Local Area Network)<\/strong> <\/span><\/p>\n

Ans: Computer network established in a school building.<\/span><\/p>\n

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Q. 18 Give one example of MAN (Metropolitan Area Network)<\/span><\/strong><\/p>\n

Ans: Cable TV network in a city.<\/span><\/p>\n

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Q. 19 Name the device responsible for converting the digital signal to continuous (analog) signal for transmission over telephone lines.<\/span><\/strong><\/p>\n

Ans: Modem<\/span><\/p>\n

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Q. 20 Name the device responsible for forwarding the data packets in a computer network.<\/strong> <\/span><\/p>\n

Ans: Router<\/span><\/p>\n

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Q. 21 Name the device which is required to connect a computer to any network.<\/strong> <\/span><\/p>\n

Ans: NIC(Network Interface Card) also known as the NIU (Network Interface Unit), LAN Card, Ethernet Card, TAP (Terminal Access Point).<\/span><\/p>\n

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Q. 22 What is the name given to the unique address assigned to each NIC?<\/strong> <\/span><\/p>\n

Ans: MAC (Media Access Control) Address also called as the physical address of a device.<\/span><\/p>\n

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Q. 23 Name the types of networks based on their geographical spread.<\/span><\/strong><\/p>\n

Ans: PAN (Personal Area Network), LAN (Local Area Network), MAN (Metropolitan Area Network) and WAN(Wide Area Network)<\/span><\/p>\n

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Q. 24 Differentiate between WWW (World Wide Web) and the Internet.<\/span><\/strong><\/p>\n

Ans: WWW, also called as W3 is the collection of interlinked hypertext documents commonly known as web pages accessed via the internet. The internet is a global computer network formed by connecting different small networks.<\/span><\/p>\n

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Q. 25 List different components of a computer network.<\/span><\/strong><\/p>\n

Ans: Following are the components of a computer network – Workstations\/Nodes, Network Hardware such as NIC (network interface card), router, switch, hub etc., communication channel(either wired or wireless) and softwares such as network operating system, browsers\u00a0and protocols.<\/span><\/p>\n

Important Computer Network Class 12 Question Answer<\/h3>\n

Q. 26 List any four advantages of computer networks.<\/span><\/strong><\/p>\n

Ans: <\/span><\/p>\n

(i) Resource Sharing<\/span><\/p>\n

(ii) Cost efficient way of communication<\/span><\/p>\n

(iii) Collaborative user interaction.<\/span><\/p>\n

(iv) Time Saving<\/span><\/p>\n

(v) Provides better and reliable storage solutions.<\/span><\/p>\n

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Q. 27 List any four disadvantages of computer networks.<\/span><\/strong><\/p>\n

Ans: <\/span><\/p>\n

(i) Security issues may arise if proper security measures are not in place.<\/span><\/p>\n

(ii) Productivity may decline due to ill-management of resources shared on the network.<\/span><\/p>\n

(iii) In case of centralised data servers, failure of the central server will serve as the single point of failure for bringing down all the services.<\/span><\/p>\n

(iv) In large networks, you might need to hire a specialist team to manage the network, increasing the cost of network management.<\/span><\/p>\n

(v) Despite regular updates of antivirus softwares, tr\u00a0 mission and spread of malicious softwares and files is quite rampant in those systems which are frequently connected to\u00a0networks.<\/span><\/p>\n

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Q. 28 What is baud rate?\u00a0<\/span><\/strong><\/p>\n

Ans: <\/span><\/p>\n

It is a measure of the speed at which the data is being transferred in a communication <\/span>channel. The rate indicates the number of electrical oscillations per second that occurs within\u00a0<\/span>a data tr\u00a0 mission. The higher the baud rate, the more bits per second that are transferred.\u00a0<\/span><\/p>\n

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Q. 29 Explain the 80:20 rule.<\/strong> <\/span><\/p>\n

Ans: <\/span><\/p>\n

The 80:20 rule states that 80% of the traffic in any network segment should be local and only <\/span>20% of the traffic should leave that segment for efficient traffic management.<\/span><\/p>\n

It simply me\u00a0 \u00a0that we should install the server at the site\/building containing the maximum <\/span>number of computers.<\/span><\/p>\n

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Q. 30 What are the components used in communication?<\/span><\/strong><\/p>\n

Ans: Sender, receiver, message, protocol and tr\u00a0 mission media<\/span><\/p>\n

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Q. 31 What is a Communication Channel?<\/strong> <\/span><\/p>\n

Ans: It is a medium through which we can send a message to its intended audience<\/span><\/p>\n

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Q. 32 What do you mean by a Protocol?<\/span><\/strong><\/p>\n

Ans: It is a set of rules or procedures for tr\u00a0 mitting data between electronic devices.<\/span><\/p>\n

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Q. 33 What is the full form of IP?<\/strong> <\/span><\/p>\n

Ans: Internet Protocol<\/span><\/p>\n

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Q. 34 How many bits are used in an IPv4 address?<\/strong> <\/span><\/p>\n

Ans: 32 bits<\/span><\/p>\n

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Q. 35 How many bits are used in an IPv6 address?<\/strong> <\/span><\/p>\n

Ans: 128 bits<\/span><\/p>\n

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Q. 36 Which Protocol of TCP\/IP uses IP Address?<\/strong> <\/span><\/p>\n

Ans: Internet Protocol (IP)<\/span><\/p>\n

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Q. 37 What is the Bandwidth of a channel?<\/span><\/strong><\/p>\n

Ans: It is the difference between upper and lower frequency limits of the analog signal or the <\/span>maximum amount of information that the channel can carry.<\/span><\/p>\n

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Q. 38 What is the Data Tr\u00a0 fer Rate (DTR)?<\/span><\/strong><\/p>\n

Ans: It is the ratio of the total amount of digital data tr\u00a0 ferred between two points in some defined <\/span>period of time and is measured in Bit Per Second (bps) or Bytes Per Second (Bps)<\/span><\/p>\n

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Q. 39 In which type of switching technique the resources are reserved for the duration of the data <\/span>transfer process<\/span><\/strong><\/p>\n

Ans: Circuit Switching<\/span><\/p>\n

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Q. 40 In which type of switching technique the data is divided into smaller units before tr\u00a0 mission?<\/strong> <\/span><\/p>\n

Ans: Packet Switching<\/span><\/p>\n

Important Computer Network Class 12 Question Answer<\/h3>\n

Q. 41 List the types of communication media with examples of each.<\/span><\/strong><\/p>\n

Ans: <\/span><\/p>\n

Wired Communication Media – Twisted Pair Cable, Coaxial Cable, Optical Fibre Cable<\/span><\/p>\n

Wireless Communication Media – Microwave, Radio Waves, Infrared, Satellite Communication<\/span><\/p>\n

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Q. 42 Which wireless communication media is omnidirectional?<\/span><\/strong><\/p>\n

Ans: Radio waves<\/span><\/p>\n

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Q. 43 What is an IP (logical) address?<\/span><\/strong><\/p>\n

Ans: An IP address is a unique address assigned to each device connected to a computer network.<\/span><\/p>\n

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Q. 44 Give an example of an IPv4 address.<\/strong> <\/span><\/p>\n

Ans: An IPv4 address is a 32-bit address expressed in decimal notation as x.x.x.x where each x is an <\/span>integer between 0 and 255. <\/span>Example: 192.0.2.188<\/span><\/p>\n

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Q. 45 Which communication media require line-of-sight for communication?\u00a0<\/span><\/strong><\/p>\n

Ans: Microwaves and Infrared<\/span><\/p>\n

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Q. 46 Which communication media can penetrate solid objects?\u00a0<\/span><\/strong><\/p>\n

Ans: Radio waves<\/span><\/p>\n

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Also Check:<\/span><\/h1>\n

Computer Science Sample Paper Class 12 Term 2 Set 1<\/a><\/span><\/h2>\n

Computer Science Sample Paper Class 12 Term 2 Set 2<\/a><\/span><\/h2>\n

Computer Science Sample Paper Class 12 Term 2\u00a0Set 3<\/a><\/span><\/h2>\n

Computer Science Sample Paper Class 12 Term 2\u00a0Set 4<\/a><\/span><\/h2>\n

Computer Science Sample Paper Class 12 Term 2 Set 5<\/a><\/span><\/h2>\n

Computer Science Sample Paper Class 12 Term 2 set 6<\/a><\/span><\/h2>\n

Important Question Answer for Term 2 Exam<\/a><\/span><\/h2>\n

Database Management System Questions with Answer<\/span><\/a><\/h2>\n

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Important Computer Network Class 12 Question Answer for Computer Science\/ Informatics Practices   Q 1- What is a Computer Network?\u00a0 Ans: A computer network is a set of interconnected computers sharing resources located on or provided by network nodes.   Q. 2 Who is considered as the creator(s) of the Internet? Ans: Vinton Cerf and […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,20],"tags":[],"class_list":["post-3213","post","type-post","status-publish","format-standard","hentry","category-cbse-sample-papers-class-12","category-cbse-computer-science-with-python-class-12"],"_links":{"self":[{"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/posts\/3213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/comments?post=3213"}],"version-history":[{"count":0,"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/posts\/3213\/revisions"}],"wp:attachment":[{"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/media?parent=3213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/categories?post=3213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cbsepython.in\/wp-json\/wp\/v2\/tags?post=3213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}