Question 1

Question 1A company has brought laptop computers for training purposes and for information retrieval. These computers will use the internet and have multimedia capabilities.(a) State two advantages and one disadvantage of using the internet to search for information when compared to using CD-ROMs or paper-based systems.(b) The laptops are linked to the network using wireless connections. Give one advantage and one disadvantage of using wireless connections.

Accepted Answer

(a) The advantages of using the internet for information retrieval compared to CD-ROMs or paper-based systems are:Vast Information — The internet offers a vast and constantly updated pool of information, providing a wider range of resources than limited CD-ROMs or static paper-based systems.Convenience and Speed — Internet access allows quick and convenient access to information from anywhere, eliminating the need to carry physical media like CD-ROMs or search through printed materials.Disadvantage — Internet searching lacks the reliability and authenticity of CD-ROMs or printed sources due to mixed accuracy, making verification harder.(b) An advantage of using wireless connections is mobility. Wireless connections enable laptops to connect from different locations within coverage area without cables.A disadvantage of using wireless connections is that wireless connections can suffer from interference and obstacles, causing potential connectivity problems and lower reliability than wired connections.

Question 2

Question 2Booking seats on an aeroplane can be done by the Internet.(a) Give two advantages of using the Internet rather than making a telephone call for this task.(b) What type of file access would be needed to make a booking ? Give a reason for your choice.

Accepted Answer

(a) Two advantages of using the Internet rather than making a telephone call for this task are:24/7 Availability — Internet booking is available round the clock, allowing users to make reservations at any time, whereas telephone calls are limited by business hours and potential wait times.Self-Service and Control — Internet booking empowers users to independently browse available seats, choose preferences, and make reservations without relying on a customer service representative, providing greater control and customization.(b) For making a booking through the Internet, the type of file access needed is "Read-Only File Access." This allows users to view available flight options, seat layouts, and other booking-related information without altering the underlying data. Users can read and interact with the data to make informed decisions about their seat selections and travel plans.

Question 3

Question 3Computer technology has now allowed employees to work from home.(a) Give three advantages to employers of allowing employees to work from home.(b) Describe two advances in computer technology which have allowed working from home to become possible.

Accepted Answer

(a) Three advantages to employers of allowing employees to work from home are:Increased Productivity — Employees often experience fewer distractions and a more comfortable work environment at home, leading to potential boosts in productivity and task completion.Cost Savings — Allowing remote work can lead to reduced overhead costs, including office space, utilities, and amenities, contributing to cost savings for employers.Wider Talent Pool — Employers can tap into a broader talent pool by hiring remote workers, without being restricted by geographic location, potentially leading to the recruitment of specialized or diverse skill sets.(b) Two advances in computer technology enabling working from home are:High-Speed Internet — The widespread availability of high-speed internet connections allows seamless communication, data sharing, video conferencing, and access to cloud-based resources, enabling remote employees to collaborate effectively.Cloud Computing and Collaboration Tools — Cloud computing centralizes data and applications, eradicating the need for local servers. This lets remote workers access files and tools online, aided by collaborative platforms like video conferencing, project management, and document sharing, enabling teamwork and productivity despite physical separation.

Question 4

Question 4Mr. Singh has offices in three cities. He wants to connect his computers at various offices. He is unable to decide whether he should go for three LANs for different offices or should also create a WAN connecting these three LANs. Help him decide by suggesting what should he go for. Support your answer with proper justification.

Accepted Answer

Considering Mr. Singh's situation, where he has offices in three cities, the need for centralized resources, and the potential benefits of inter-office collaboration, it is advisable for him to create a WAN connecting the three LANs. Creating a WAN will give him the following benefits:Centralized Resources — A single WAN would allow centralized resources, such as servers and databases, to be shared among all offices. This can improve efficiency and data consistency.Efficient Communication — A WAN facilitates seamless communication and collaboration between offices, making it easier for employees to work together regardless of their physical location.Cost Efficiency — Sharing resources over a WAN can reduce the need for redundant equipment, leading to potential cost savings.

Question 5

Question 5What is Internet ? What are its uses ?

Accepted Answer

Internet is a computer-based world wide information network. It is composed of a large number of smaller interconnected networks.Some of the uses of Internet are:Businesses use the Internet to provide access to complex databases, such as financial databases.Companies carry out electronic commerce (commerce on internet) including advertising, selling, buying, distributing products, and providing after sales services.Businesses and institutions use the Internet for voice and video conferencing and other forms of communication that enable people to telecommute, or work from a distance.The use of electronic mail (e-mail) over the Internet has greatly speeded communication between companies among coworkers, and between other individuals.Individuals use the Internet for communication, entertainment, finding information and to buy and sell goods and services.

Question 6

Question 6A communication network which is used by large organisations over regional, national or global area is calledLANWANMANVAN

Accepted Answer

WANReason — WAN (Wide Area Network) spans a larger geographical area and connects multiple LANs or other networks together. It can cover regional, national, or even global distances.

Question 7

Question 7Discuss the following types of networks in brief :(i) LAN(ii) MAN(iii) WAN

Accepted Answer

(i) LAN — LANs (Local Area Network) are small computer networks confined to a localised area like an office, a building or a factory. They facilitate resource sharing among users, including data, programs, printers, hard-disks, modems etc.(ii) MAN — MANs (Metropolitan Area Network) are the networks spread over a city. For example, cable TV networks that are spread over a city. The purpose of a MAN is also the sharing of hardware and software resources among its users.(iii) WAN — WANs (Wide Area Network) connect computers across countries, spanning large distances. They can link LANs from different locations, acting as a unified network for efficient, cost-effective and high speed information exchange.

Question 8

Question 8How is LAN different from WAN ?

Accepted Answer

Local Area Network (LAN)Wide Area Network (WAN)LAN stands for Local Area Network.WAN stands for Wide Area NetworkLAN is spread over a small area of upto 1 km.WAN is spread over a very large area.LAN usually costs less to set up.WAN costs higher to setup.LAN is usually a single network.WAN is usually a network of many networks.

Question 9

Question 9Differentiate : Data, Information & Multimedia

Accepted Answer

Data — Data is raw, unprocessed facts and figures. For example, consider the digits — 4, 8, 12. These are data.Information — Information refers to processed data which is conveying some meaning as per context. For example, 4 + 8 = 12 is information as it conveys a clear meaning.Multimedia — Multimedia refers to usage of many types of media like text, photographs, graphics, video and audio at the same time.

Question 10

Question 10What do you understand by the terms WiFi and Bluetooth ?

Accepted Answer

WIFI — Wi-Fi refers to Wireless Fidelity, which lets us connect to the Internet without a direct line from our PC to the ISP.Bluetooth — Bluetooth is a telecommunications industry specification that describes how mobile phones, computers and personal digital assistants (PDAs) can be easily interconnected using a short-range wireless connection.

Question 11

Question 11What are guided and unguided media ?

Accepted Answer

Guided media — The communication media used for wired connection are called guided media. For example, twisted pair cables, coaxial cables etc.Unguided media — The communication media used for wireless connection are called unguided media. For example, radio waves, microwaves, satellites etc.

Question 12

Question 12What is cloud computing ?

Accepted Answer

Cloud computing refers to storing and accessing data and programs over the Internet instead of the computer's hard drive.

Source: This question is from Computer Networking, Multimedia Basics, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking, Multimedia Basics: Question, Cloud, Computing, Computer Networking, Multimedia Basics, Computer Applications. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
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Question 13

Question 13How are private clouds different from public clouds ?

Accepted Answer

Private cloudsPublic cloudsA private cloud consists of computing resources used and exclusively owned by one business or organization.Public cloud refers to a common cloud service made available to multiple subscribers.Private cloud resides on company's intranet or hosted data center where all the data is protected behind a firewall.In public cloud, the same hardware, storage, and network devices are shared among the cloud tenants.Private clouds are often used by government agencies, financial institutions, any other mid to large-size organizations with business-critical operations seeking enhanced control over their environment.Public cloud deployments are frequently used to provide web-based email, online office applications, storage, and testing and development environments.

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