CBSE Class 12 Computer Science: Networking and Open Source Concepts Solutions

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NCERT Solutions PDF Class 12 PDF

This resource provides detailed NCERT Solutions for Class 12 Computer Science, focusing on Chapter 14: Networking and Open Source Concepts. It covers essential topics like communication technologies, web hosting, packet vs. message switching, protocols such as Telnet, and the advantages of optical fibers. The solutions also explain cloud computing, Wi-Fi characteristics, and expand acronyms like GSM and GPRS. These solutions are designed to help students understand the fundamental concepts of computer networking and open-source principles, offering clear explanations and step-by-step guidance for each question. They serve as an excellent tool for exam preparation, reinforcing learning and clarifying complex topics related to network communication and technologies.

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Quick info

BoardCBSE
ClassClass 12
SubjectComputer Science
Session2026
LanguageEnglish
TypeNCERT Solutions
Chapter14. Networking and Open Source Concepts

Chapter summary

This chapter's NCERT Solutions for Class 12 Computer Science delve into the core concepts of Networking and Open Source. It covers fundamental communication technologies, including web hosting, the distinctions between packet and message switching, and the role of protocols like Telnet. The solutions also highlight the benefits of optical fibers and explain the principles of cloud computing and Wi-Fi. Acronyms like GSM and GPRS are expanded, providing a solid foundation in networking essentials.

Learning outcomes

  • Understand the components of a URL and identify domain names.
  • Define and explain the concept of web hosting.
  • Differentiate between packet switching and message switching.
  • Identify protocols used for remote machine connections.
  • List and explain the advantages of using optical fibers.
  • Define cloud computing and its underlying principles.
  • Describe the key characteristics of Wi-Fi technology.
  • Expand common networking acronyms like GSM and GPRS.

Topics covered

Paper topics

  • Domain Names and URLs
  • Web Hosting
  • Packet Switching
  • Message Switching
  • Telnet Protocol
  • Optical Fiber Advantages
  • Cloud Computing
  • Wi-Fi Characteristics
  • GSM Expansion
  • GPRS Expansion

Important topics

  • Packet vs. Message Switching
  • Advantages of Optical Fibers
  • Definition of Cloud Computing
  • Web Hosting Concepts

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Questions and Solutions

Networking and Open Source Concepts

TOPIC-1 Communication Technologies

Very Short Answer Type Questions [1 mark each]

Question 1:

Identify the Domain name and URL from the following: http://www.income.in/home.aboutus.hml

Answer:

Domain name – income.in

URL – http://www.income.in/home.aboutus.hml

Question 2:

What is Web Hosting?

Answer:

Web hosting is the service that makes our website available to be viewed by others on the Internet. A web host provides space on its server, so that other computers around the world can access our website by means of a network or modem.

Question 3:

What is the difference between packet & message switching?

Answer:

Packet Switching Message switching There is a tight upper limit on the block size. In message switching there was no upper limit. A fixed size of packet is specified. All the packets are stored in main memory in In message switching packets are stored on disk. This

switching office. increases the performance as access time is reduced.

Question 4:

Which protocol in used in creating a connection with a remote machine?

Answer:

Telnet: It is an older internet utility that allow us to log on to remote computer system. It also facilitates for terminal emulation purpose.

Question 5:

Which protocol is used to create a connection with a remote machine? Give any two advantage of using Optical Fibers.

Answer:

Telnet Two advantage of using Optical Fibers are

  1. Capable of extremely high speed.
  2. No Electromagnetic interference.
  3. Extremely low attending

Question 6:

What is cloud computing?

Answer:

The sharing of computer resources (dedicated, time-shared, or dynamically shared servers) and related infrastructurer components (load balancers, firewalls, network storage, developer tools, monitors and management tools) to facilitate the deployment and operation of web and network based applications. Cloud computing relies on sharing of resources to achieve coherence and economies of scale, similar to a utility (like the electricity grid) over a network.

Question 7:

Write two characteristics of Wi-Fi.

Answer:

  1. It is wireless network.
  2. It is for short range.

Question 8:

Expand the following:

  1. GSM
  2. GPRS

Common mistakes

  • Confusing domain names with full URLs.
  • Inability to clearly distinguish between packet and message switching mechanisms.
  • Forgetting or misstating the advantages of optical fibers.
  • Vague definitions of cloud computing or web hosting.

Revision tips

  • Focus on understanding the core differences between packet and message switching.
  • Memorize the key advantages of optical fibers for high-speed data transmission.
  • Review the definitions of web hosting and cloud computing to ensure clarity.
  • Practice identifying domain names and URLs from given web addresses.

Practice MCQs

Q1. Which part of a URL represents the unique identity of a website on the internet?

Q2. What is the primary function of Web Hosting?

Q3. In which type of switching is there a strict limit on the size of data blocks?

Q4. Which protocol is primarily used for logging into a remote computer system?

Q5. Which of these is NOT an advantage of using Optical Fibers?

Q6. Cloud computing is best described as:

Q7. What is a key characteristic of Wi-Fi technology?

Q8. GSM and GPRS are acronyms related to which technology?

Frequently asked questions

What is the difference between a domain name and a URL?

A domain name, like 'example.com', is the unique identifier for a website. A URL (Uniform Resource Locator), like 'http://www.example.com/page', is the complete web address that includes the protocol, domain name, and specific path to a resource.

How does packet switching differ from message switching?

Packet switching breaks data into fixed-size packets, each routed independently. Message switching transmits entire messages as a single unit, with each message routed sequentially.

What are the main benefits of using optical fibers for data transmission?

Optical fibers offer extremely high transmission speeds, are immune to electromagnetic interference, and have very low signal loss (attenuation).

Can you explain what cloud computing is in simple terms?

Cloud computing is like using electricity from a power grid; instead of owning your own servers and software, you access computing resources (like storage and processing power) over the internet from a provider.

What does the acronym GSM stand for in networking?

GSM stands for Global System for Mobile Communications, a standard for digital cellular networks used for mobile phones.

What is the purpose of the Telnet protocol?

Telnet is used to establish a connection with a remote computer, allowing a user to log in and interact with its command-line interface as if they were physically present.

Important links

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