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Solutions for Class 9 Computer on Extramarks

Computer Science is an interesting subject and has been catching the attention and focus of the students for a very long time. Solutions to the questions in the book can be really helpful for the students in order to learn better. With CBSE class 9 computer book solutions on Extramarks students can understand the textbook questions and practice them for better learning. Download the app now.u00a0<br>

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Solutions for Class 9 Computer on Extramarks

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  1. “COMMUNICATION TECHNOLOGY”CLASS-9

  2. What is COMMUNICATION TECHNOLOGY? • A computer network connects two or more autonomous computers. Networks supply their users with communication channels. Exchange of messages is controlled by communication protocols. Networking is needed to share computer files, to share computer peripheral, to enable different computers to communicate with each other. • The three main components of network are the sender, communication channel and the receiver. • When computers are connected via telephones, a modem is also used to convert the computer generated signal (digital signal) into a form that can be carried by telephone cables (analog signal). When the cables connect two or mo ore workstations it is known as transmission media or communication channels of network • The communication media is divided in two categories: guided media and unguided media. The three basic types of Guided Media are Twisted Pair, Coaxial Cable and Optical Fibre. Twisted pair cable consists of two identical wires wrapped together in a double helix

  3. Extramarks’ Approach • Computer Science is an interesting subject and has been catching the attention and focus of the students for a very long time. Solutions to the questions in the book can be really helpful for the students in order to learn better. With CBSE class 9 computer book solutions on Extramarks students can understand the textbook questions and practice them for better learning. Download the app now.  • For more information visit and register at Extramarks website. • https://www.extramarks.com/ncert-solutions/cbse-class-9/foundation-of-information-technology-communication-technology

  4. Thank You!

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