Question 1

Question 1Differentiate between LAN, MAN, and WAN.

Accepted Answer

LANMANWANIt is used for a small networks like a room, office building or campus.MAN is much larger than a LAN setup and can spread across a city.WAN is used to link computers located at far away places (countries or continents).The maximum range of LAN can be 10 Kilometers.The maximum range of MAN can be 50 Km.The range of WAN is limitless as it uses telecommunication or satellite signals.The hardware as well as software resources are shared through LAN.The main purpose of a MAN is also to share hardware and software resources.The main purpose of WAN is to share data and information.LAN is usually used in schools, offices etc.WAN is commonly used in Cable Television Network.WAN is used as internet in houses, schools, banks and private and public sector.

Question 2

Question 2Describe the different types of networks.

Accepted Answer

There are four types of computer networks:LAN (Local Area Network) — LAN is used when two or more computers or peripheral devices are connected within a small area, like a room, office building, or a campus. The maximum range of LAN can be 10 Kilometers. The number of computers in a LAN varies from 2 to 1000. The hardware as well as software resources are shared through LAN.MAN (Metropolitan Area Network) — MAN is much larger than a LAN setup and is spread across a city. The most common example of a MAN type network is Cable Television Network. The main purpose of a MAN is to share hardware and software resources. The maximum range of MAN can be 50 Km.WAN (Wide Area Network) — WAN is used when we have two or more computers located at far away places, linked by communication facilities, like telecommunication or satellite signals. The most common example of a WAN network is the Internet which is generally used in houses, schools, banks and private and public sector. The main characteristic of a WAN is that it requires a public telecommunication media to transfer data.PAN (Personal Area Network) — PAN is mainly created for an individual person. It consists of a desktop/laptop computer, a mobile phone, and/or a handheld computing device, such as a PDA or a Smartphone. We can use these networks to transfer files including e-mail, calendar appointments, digital photos, and music. Personal area networks generally cover a range of less than 10 meters.

Question 3

Question 3Explain the types of modem.

Accepted Answer

Modems are available in two categories:Internal modem — These are attached to the internal slot of the motherboard. These are categorised as full duplex and half duplex which are used for fax and internet communications. They can also be used for data and voice communication.External modem — It is a small box connected to the communication port of the computer. It works similar to the internal modem. The only difference is that it is placed outside the CPU box.

Question 4

Question 4Explain any four advantages of networking.

Accepted Answer

The four advantages of networking are:Hardware Sharing — In a network, we can share almost every peripheral device, such as a printer, scanner, modem, CD writer, etc., among several computers. All these devices are attached to a remote server, which is shared among multiple computers. This reduces the cost of hardware.Software Sharing — Every application software can be installed on the main server rather than installing it on every computer individually. Computers in a network can use the required software from the server. This technique saves cost as well as time.Efficiency of Hardware and Software Resources — In a network, modifications in software or hardware are done at a single point. Since the resources are installed at a single point, all modifications are done at that point rather than in individual computers.Reduces Redundancy — Since people use the same data in a common workplace, they can share it over a network by saving and storing it centrally. This also reduces the redundancy of the same data.

Question 5

Question 5What is the Internet? Write any five uses of it.

Accepted Answer

Internet is a computer-based world wide information network. It is composed of a large number of smaller interconnected networks.Five uses of the 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 6Differentiate between Ethernet Cables and Fiber Optic cable.

Accepted Answer

Ethernet CableFiber Optic cableEthernet cables use electric signals as the data transmission medium.Fiber optic cables use light signals as the data transmission medium.Ethernet cables transmit data at relatively lower speeds.Fiber optic cables transmit data at much higher speeds.These cables are highly susceptible to electromagnetic and radio interferences.Fiber optic cables are immune to electromagnetic and radio interferences.Ethernet cables are less secure.Fiber optic cables offer high degree of security.Ethernet cables are made of copper wires.Fiber optic cables are made of glass or plastic strands.They are comparatively cheaper.They are expensive.Ethernet cables are easy to install.The installation of optical fiber cables requires specialized accessories.

Question 7

Question 7Differentiate between a server and a client.

Accepted Answer

ServerClientA server is a computer that provides services or resources to other devices present in the network.A client is a computer that requests and consumes services or resources from a server.Server computers have multiple processors, large amounts of memory, redundant storage, and specialized server operating systems.Clients are typically general-purpose devices with standard hardware configurations and general-purpose operating systems.Servers are designed to handle multiple client requests simultaneously, managing resources and delivering high performance.Clients are typically focused on user interfaces and user interactions.Servers continuously listen for incoming client requests and respond to them.Clients initiate communication with the server by sending requests to them over the network. They do not listen for incoming requests.

Question 8

Question 8Write the advantages and disadvantages of Infrared wireless technology.

Accepted Answer

The advantages of Infrared wireless technology are as follows:It has low power consumption.Infrared components are less expensive.It is more secure than radio-frequency signals.Direct line of sight requirement of Infrared enhances its security and minimizes interference, making it suitable for short-range, point-to-point communication.The disadvantages of Infrared wireless technology are as follows:It has limited range of approx 5 meters and it cannot penetrate walls or other obstacles.It works only in direct line of sight between the transmitter and receiver. Even the smallest obstruction will disrupt communication.Infrared communication can take place only between two devices at a time limiting its use to control multiple devices.It has relatively low data transfer speeds compared to technologies like Bluetooth or Wi-Fi.Bright ambient light, including sunlight and strong artificial lighting, can interfere with infrared signals and degrade the quality of communication.

Question 9

Question 9What is Wi-Fi? Write the advantages and challenges of Wi-Fi.

Accepted Answer

Wi-Fi stands for Wireless Fidelity. It creates a Wireless Local Area Network that uses radio waves to send the information. A secure, reliable, and fast wireless connection is established between the electronic devices and the Internet by using this technology. The devices require a wireless adapter connected to them to capture the Wi-Fi signals.Wi-Fi offers the following advantages:Wi-Fi has replaced the wired medium completely and can be used to connect to the Internet anywhere, at any time.It is relatively inexpensive and can also be accessed at places where cables cannot be installed.One can connect multiple devices through Wi-Fi.Wi-Fi faces the following challenges:It has high power consumption.It is slower than the wired medium.The transmission breaks or slows down when there is noise interference.

Question 10

Question 10How is data different from information?

Accepted Answer

Data is different from information in the following ways:DataInformationData is the lowest level of abstraction.Information is one level higher abstraction than data.Data is unstructured and carries no meaning.Information is derived by interpreting and processing data.For example, marks such as 67, 88, 90 and 77 are considered data.For example, when these marks are related to a boy named Rohit, a student of class IX who has scored 67 in English, 88 in Maths, 90 in Physics and 77 in Chemistry then it becomes information.

Question 11

Question 11What is a network and why is it required?

Accepted Answer

A computer network is a group of computers and peripheral devices, connected through a data communication system to facilitate the sharing of hardware and software resources among different users working on different computers.A computer network is required for the following reasons:A computer network enables the sharing of hardware and software resources.Data can be shared over a network by saving and storing it centrally reducing redundancy of the same data.It helps in saving of paper and time by reducing the need for generating multiple hard copies of the same document.It enables Internet sharing among the computers in the network thus, reducing internet usage cost.

Question 12

Question 12What is cloud computing? Explain different types of cloud services.

Accepted Answer

Cloud Computing refers to manipulating, configuring, and accessing the applications online. It offers online data storage, infrastructure, and applications.The different types of cloud services are:Public cloud — A public cloud is provisioned for open use by the general public. It has no boundaries and the cloud infrastructure can be used by anyone, anywhere over the Internet.Private Cloud — A private cloud is owned and used by a single organization over a private network. It centralizes the resources of the organization so that they can be accessed easily by its various departments and offices at different locations.Hybrid Cloud — A hybrid cloud is a combination of both private and public cloud. This type of cloud offers benefits of multiple deployment models such as the controlled environment in private clouds and rapid elasticity of public clouds.Community Cloud — The community cloud is provisioned for use by a group of consumers from different organizations who share the same concerns. It may be owned, managed, and operated by one or more of the organizations in the community or a third party.

Question 13

Question 13Explain the various long distance communication mediums used in networking.

Accepted Answer

The various long distance communication mediums used in networking are:Coaxial Cables — A Coaxial cable consists of central copper wire surrounded by insulation and then a shield of braided wire.It is relatively inexpensive and can transmit data at higher rates.It also provides better immunity against electromagnetic disturbances.It is mainly used by the cable television industry to connect TVs to a cable TV service.The two main types of Coaxial cable are:Baseband Coaxial cable — It supports quick transmission of a single signal at a time. It is mainly used for LANs.Broadband Coaxial cable — It transmits multiple signals at the same time and is used for longer distances.Fibre optics — A Fibre optic cable consists of a central glass core containing a bundle of glass threads, surrounded by several layers of protective materials. The glass threads are capable of transmitting data converted into light signals at extremely high speed.A Fibre optic cable is highly resistant to signal interference and provides better data transmission by providing high bandwidth.It is fragile and the maintenance cost is high.Satellite — Satellites create a communication channel between a source transmitter and a receiver at different locations on the Earth. The ground station with the help of a dish antenna sends signal to the satellite, it amplifies the received signal and sends it back to the ground station for relay.Wimax — WiMax stands for Worldwide Interoperability for Microwave Access. It is a telecommunication protocol that provides fixed and mobile internet services.WiMax requires a tower called WiMax Base Station, that is connected to the Internet using a standard wired high-speed connection.The connectivity between the tower and the end user is provided through microwave link.WiMax technology provides high speed connection upto 75 Mbps over an area of 30 miles for fixed stations and 3-10 miles for mobile stations.Microwave — Microwave is a wireless communication technology that uses high frequency beams of radio waves to provide high speed signal transmission that can send and receive voice, video, and data information.The transmission is fast but is limited to line-of-sight transmission, in which signal travels in a straight line with no obstructions between microwave antennas.Microwave signals are used for both satellite and ground-based communications.Many TV and telephone communications in the world are transmitted over long distances using microwave signals.Microwave signals are widely used in radar technology.Radio wave — Radio waves is a wireless transmission medium that distributes radio signals through the air.Radio waves are widely used as signals on radio communication.A transmitter is used to send the broadcast signal and a receiver is needed to accept the signal.Radio waves have lower frequencies and longer wavelength.Radio waves can have a frequency range from 300 gigahertz (GHz) to as low as 30 hertz (Hz).

Question 14

Question 14What are the advantages and disadvantages of cloud computing?

Accepted Answer

The advantages of cloud computing are as follows:Cost saving — Cloud Computing can significantly lower the company's IT expenses and requirements as it provides access to numerous storage facilities and applications.Reliability — It is much more reliable, when it comes to data management, backup, and recovery from failures.Unlimited Free Storage — Cloud provides unlimited free and secure storage space to store large amounts of information.Accessibility — Cloud allows easy access to cloud-based services and applications through Internet-enabled devices.The disadvantages of cloud computing are as follows:Technical Issues — There are times when cloud system encounters serious technical problems, which may lead to the entire business processes being temporarily suspended.Security — Storing the company's sensitive data and important files on third-party cloud providers, always opens up security risks.Vendor Lock-in — Switching from one cloud service to another may lead to portability and support issues.Limited Control — The consumer has very little control over the applications, data, and services of cloud.

Question 15

Question 16Which is the most widely used form of wiring medium that transmits transmission over longer distances and at higher bandwidth?EthernetCoaxial cableOptical Fiber cableNone of these

Accepted Answer

Optical Fiber cableReason — Optical Fiber cable is the most widely used form of wiring medium that transmits transmission over longer distances and at higher bandwidth.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Widely, Form, Wiring, Medium, Transmits. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

Question 16

Question 17Identify the odd term amongst the following group:Ethernet CablesOptical FiberCoaxial cableBluetooth technology

Accepted Answer

Bluetooth technologyReason — Bluetooth technology is an example of wireless media while Ethernet Cables, Optical Fiber and Coaxial cable are examples of guided media.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Odd, Term, Amongst, Group, Ethernet. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

Question 17

Question 18............... provides free or low cost online storage for the users.RedditDrop boxGoogle Play StoreNone of these

Accepted Answer

RedditReason — Reddit provides free or low cost online storage for the users.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Provides, Free, Low, Cost, Online. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

Question 18

Question 19A cloud which is accessible to both private and public users is called ...............	cloud.PrivatePublicHybridCommunity

Accepted Answer

HybridReason — A cloud which is accessible to both private and public users is called Hybrid cloud.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Cloud, Accessible, Private, Public, Users. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

Question 19

Question 20A protocol used for exchanging files between computers.TCP/IPFTPHTTPNone of these

Accepted Answer

FTPReason — FTP (File Transfer Protocol) is used for exchanging files between computers.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Protocol, Exchanging, Files, Computers, Tcp. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

Question 20

Question 21............... are the two most popular Internet standard protocols for retrieving e-mails.TCP/IPHTTP/FTPIMAP/POPNone of these

Accepted Answer

IMAP/POPReason — IMAP/POP are the two most popular Internet standard protocols for retrieving e-mails.

Source: This question is from Computer Networking, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networking: Question, Popular, Internet, Standard, Protocols, Retrieving. 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 MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
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.
Related Questions from Computer NetworkingQ1: Question 1 Differentiate between LAN, MAN, and WAN.
Q10: Question 10 How is data different from information?
Q11: Question 11 What is a network and why is it required?
Q12: Question 12 What is cloud computing? Explain different types of cloud services.
Q13: Question 13 Explain the various long distance communication mediums used in networking.
Practice more questions from Computer Networking &mdash; Computer Applications, Class 9 CBSE

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