Question 1

Question 1Rovenza Communication International (RCI) is an online corporate training provider for IT-related courses. The company is setting up their new campus in Kolkata. You, as a network expert, have to study the physical locations of various blocks and the number of computers to be installed. In the planning phase, provide the best possible answers for the queries (a) to (d) raised by them.Block-to-Block distance (in metres):FromToDistanceAdministrative BlockFinance Block60Administrative BlockFaculty Recording Block120Finance BlockFaculty Recording Block70Expected Computers to be installed in each block:BlockComputersAdministrative Block30Finance Block20Faculty Recording Block100(a) Suggest the most appropriate block where RCI should plan to install the server.(b) Suggest the most appropriate block-to-block cable layout to connect all three blocks for efficient communication.(c) Which type of network out of the following is formed by connecting the computers of these three blocks?LANMANWAN(d) Which wireless channel out of the following should be opted by RCI to connect to students from all over the world?InfraredMicrowaveSatellite

Accepted Answer

(a) The most appropriate block where RCI should plan to install the server is faculty recording block as maximum number of computers are placed there.(b) The most appropriate block-to-block cable layout to connect all three blocks for efficient communication is shown below:(c) LANReason — The network is a Local Area Network (LAN) because it connects computers within a single campus in Kolkata, covering short distances (60m, 70m, 120m) between blocks.(d) SatelliteReason — RCI should use Satellite communication for global connectivity. Satellite provides worldwide coverage, enabling students from anywhere to access online corporate training and ensuring consistent, reliable communication over long distances.

Question 2

Question 2University of Correspondence in Allahabad is setting up a network between its different wings. There are 4 wings named Science (S), Journalism (J), Arts (A) and Home Science (H).Distance between various wings:Wing A to Wing S100 mWing A to Wing J200 mWing A to Wing H400 mWing S to Wing J300 mWing S to Wing H100 mWing J to Wing H450 mNumber of Computers:Wing A150Wing S10Wing J5Wing H50(a) Suggest the most suitable topology for networking the computers of all wings.(b) Name the wing where the Server is to be installed. Justify your answer.(c) Suggest the placement of Hub/Switch in the network.(d) Mention how economic technology will provide Internet accessibility to all wings.

Accepted Answer

(a) The most suitable topology is star topology to connect the computers of all wings.(b) The server should be installed in Wing A because Wing A has the highest number of computers (150), and this will help reduce network traffic.(c) The Hub/Switch or should be placed in all the wings.(d) The economic way to provide internet accessibility to all the wings is to use the proxy server at Wing A and connect to the internet through a dial-up network.

Question 3

Question 3Perfect Edu. Services Ltd. is an educational organization. It is planning to set up its India campus at Chennai with its head office at Delhi. The Chennai campus has four main buildings—ADMIN, ENGINEERING, BUSINESS and MEDIA.You, as a network expert, have to suggest the best network-related solutions for their problems raised in (a) to (d), keeping in mind the distances between the buildings and other given parameters.Shortest distance between various buildings:ADMIN to ENGINEERING55 mADMIN to BUSINESS90 mADMIN to MEDIA50 mENGINEERING to BUSINESS55 mENGINEERING to MEDIA50 mBUSINESS to MEDIA45 mDELHI Head Office to CHENNAI Campus2175 kmNumber of Computers installed at various buildings:ADMIN110ENGINEERING75BUSINESS40MEDIA12DELHI Head Office20(a) Suggest the most appropriate location for the server inside the Chennai campus (out of the 4 buildings) to get the best connectivity for maximum number of computers. Justify your answer.(b) Suggest and draw the cable layout to efficiently connect various buildings within the Chennai campus for connecting the computers.(c) Which hardware device will you suggest to be procured by the company to be installed to protect and control the internet use within the campus?(d) Which of the following will you suggest to establish online face-to-face communication between the people in the Admin Office of the Chennai campus and Delhi Head Office?(i) Cable TV(ii) Email(iii) Video conferencing(iv) Text Chat

Accepted Answer

(a) The most suitable location for the server is the Admin Building because it has the highest number of computers (110). Placing the server here ensures maximum connectivity and data access for the maximum number of users.(b) A star topology can be used to connect the Admin building directly to other buildings. This layout optimizes connectivity and data transfer efficiency within the Chennai campus. The cable layout is shown below:(c) A Firewall/Router is recommended for network security and controlling internet usage within the campus. It filters network traffic based on security rules, protecting against unauthorized access and threats.(d) Video conferencingReason — Video conferencing is the best option for online face-to-face communication. It provides real-time audio and video capabilities, facilitating effective collaboration between Chennai and Delhi offices.

Question 4

Question 5Tech Up Corporation (TUC) is a professional consultancy company. The company is planning to set up new offices in India with its hub at Hyderabad. As a network adviser, you have to understand their requirements and suggest to them the best available solutions.Block-to-block distance:Block (From)Block (To)DistanceHuman ResourceConference60mHuman ResourceFinance60mConferenceFinance120mExpected number of computers to be installed in each block:BlockComputersHuman Resource125Conference25Finance60(a) What will be the most appropriate block where TUC should plan to install their server?(b) Draw a block-to-block cable layout to connect all the buildings in the most appropriate manner for efficient communication.(c) What will be the best possible connectivity out of the following to connect the new office in Bengaluru with its London office?(i) Infrared(ii) Satellite Link(iii) Ethernet Cable(d) Which of the following devices will you suggest to connect each computer in each of the above buildings?(i) Gateway(ii) Switch(iii) Modem(e) Write names of any two popular Open Source Software which are used as Operating Systems.

Accepted Answer

(a) Human Resource will be the most appropriate block where TUC should plan to install the server due to maximum number of computers (125).(b) Block-to-block cable layout to connect all the buildings is shown below:(c) Satellite LinkReason — A Satellite Link would be the best option to connect the new office in Bengaluru with its London office. Satellite links offer reliable and high-speed communication over long distances, making them ideal for connecting offices in different locations.(d) SwitchReason — A Switch is recommended to connect each computer in each building. Switches allow multiple devices to connect and communicate within a local network.(e) Two popular Open Source Software Operating Systems are Linux and Open Solaris.

Question 5

Question 7Bhartiya Connectivity Association is planning to set up its offices in four major cities in India to provide regional IT infrastructure support in the field of Education & Culture. The company plans to set up their head office in New Delhi at three locations, naming them as "Front Office", "Back Office" and "Work Office". The company has planned three more regional offices—"South Office", "East Office" and "West Office" —in other major cities of India.A rough layout of the same is as follows:Approximate distance between these offices as per network survey team is as follows:Place FromPlace ToDistanceBack OfficeFront Office10 kmBack OfficeWork Office70mBack OfficeEast Office1291 kmBack OfficeWest Office790 kmBack OfficeSouth Office1952 kmIn continuation of the above, the company experts have planned to install the following number of computers in each of their offices:Back Office100Front Office20Work Office50East Office50West Office50South Office50(a) Suggest network type (out of LAN, MAN, WAN) for connecting each of the following sets of their offices:(i) Back Office and Work Office(ii) Back Office and South Office(b) Which device out of the following will you suggest to be procured by the company for connecting all the computers within each of their offices?(i) Switch/Hub(ii) Modem(iii) Telephone(c) Which of the following communication mediums will you suggest to be procured by the company for connecting their local office units in New Delhi for very effective and fast communication?(i) Telephone Cable(ii) Optical Fibre(iii) Ethernet Cable(d) Suggest a cable/wiring layout for connecting the company's local office located in New Delhi. Also, suggest an effective method/technology for connecting the company's regional office— "East Office", "West Office" and "South Office" —with offices located in New Delhi.

Accepted Answer

(a)(i) For connecting the Back Office and Work Office, a LAN (Local Area Network) would be suitable as they are 70m apart.(ii) For connecting the Back Office and South Office, a WAN (Wide Area Network) is required due to the long distance (1952 km).(b) Switch/HubReason — A switch or hub is essential for connecting all computers within each office as they facilitate communication between devices on the same network. They manage network traffic efficiently, ensuring smooth data transfer and communication.(c) Optical fiberReason — Optical fibre is recommended for very effective and fast communication in New Delhi's local office units. It offers high-speed data transmission, reliability, making it ideal for modern network infrastructures.(d) The cable/wiring layout is shown in the diagram below:An effective method for connecting the company's regional office is Satellite.

Question 6

Question 9Prime Computer Services Ltd. is an international educational organization. It is planning to set up its India campus at Mumbai with its head office in Delhi. The Mumbai office campus has four main buildings — ADMIN, ACCOUNTS, EXAMINATION and RESULT.You as a network expert have to suggest the best network-related solutions for their problems raised in (i) to (v), keeping in mind the distances between the buildings and other given parameters.Shortest distances between various buildings:ADMIN to ACCOUNTS55 mADMIN to EXAMINATION90 mADMIN to RESULT50 mACCOUNTS to EXAMINATION55 mACCOUNTS to RESULT50 mEXAMINATION to RESULT45 mDELHI Head Office to MUMBAI Campus1450 kmNumber of computers installed at various buildings:ADMIN110ACCOUNTS75EXAMINATION40RESULT12DELHI Head Office20(a) Suggest the most appropriate location of the server inside the Mumbai campus (out of the four buildings) to get the best connectivity for maximum number of computers. Justify your answer.(b) Suggest and draw cable layout to efficiently connect various buildings within the Mumbai campus for a wired connectivity.(c) Which networking device will you suggest to be procured by the company to interconnect all the computers of various buildings of the Mumbai campus?(d) The company is planning to get its website designed which will allow students to see their results after registering themselves on its server. Out of the static or dynamic, which type of website will you suggest?(e) Which of the following will you suggest for online face-to-face communication between the people in the ADMIN office of Mumbai campus and Delhi Head Office?(i) Cable TV(ii) Email(iii) Video conferencing(iv) Text chat

Accepted Answer

(a) The most appropriate location for the server would be the ADMIN building because it has the highest number of computers (110).(b) A star topology can be used to efficiently connect various buildings within the Mumbai campus. Cable layout is shown in the diagram below:(c) A Switch/Hub is recommended to interconnect all the computers of various buildings within the Mumbai campus.(d) A dynamic website will be more suitable for the company's purpose. Dynamic websites can be updated regularly and interact with databases, allowing students to access personalized information such as their results after registering.(e) Video conferencingReason — Video conferencing would be the most suitable option for online face-to-face communication between the ADMIN office of the Mumbai campus and Delhi Head Office. It offers real-time audio and video capabilities, enhancing collaboration and communication effectiveness.

Question 7

Question 15............... is a communication methodology designed to deliver both voice and multimedia communications over Internet Protocol.VoIPSMTPPPPHTTP

Accepted Answer

VoIPReason — VoIP (Voice over Internet Protocol) is a communication methodology designed to deliver both voice and multimedia communications over Internet protocol.

Source: This question is from Computer Networks, Informatics Practices &mdash; Class 12, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Computer Networks: Question, Communication, Methodology, Designed, Deliver, Voice. These are fundamental topics in Informatics Practices that students are expected to master as part of the CBSE Class 12 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 Informatics Practices 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 RememberRead the question carefully and identify all parts before answering.
Use the terminology specific to this subject and chapter.
Review the textbook content for this chapter before attempting questions.
Practice writing concise, well-structured answers within time limits.
Related Questions from Computer NetworksQ1: Question 1 Rovenza Communication International (RCI) is an online corporate training provider for...
Q10: Question 10(a) Differentiate between MAN and WAN.
Q11: Question 10(b) Differentiate between Website and Web page.
Q12: Question 10(c) Differentiate between Router and Gateway.
Q13: Question 10(d) Differentiate between Bus and Star topology.
Practice more questions from Computer Networks &mdash; Informatics Practices, Class 12 CBSE

Question 8

Question 4Describe bus topology and star topology.

Accepted Answer

Bus Topology — Bus topology is a multi-point configuration, i.e., several devices are connected to a main long cable (usually co-axial cable) which acts as a backbone. Nodes are connected by drop lines and taps. A drop line is a connection between long cable and devices and taps are the connectors that are punctured inside the main cable. The data flows from one end of the cable to the other. The cable has terminators at both ends which absorb signals when the signal reaches the end, preventing signal bounce. However, as the signal travels a long distance, it becomes weaker and weaker. It works well for small networks.Star Topology — In star topology, each communicating device is connected to a central controller called a hub or switch. The devices in star topology send and receive data indirectly, the data passes to and from the hub. The central node can be either a broadcasting device (hub) or a unicast device (switch).

Question 9

Question 6What is modem? Define the functioning of internal modem and external modem.

Accepted Answer

A MODEM (Modulator Demodulator) is an electronic device that enables a computer to transmit data over telephone lines. It is a device used to convert digital signals into analog signals and vice versa.The functioning of internal modem and external modem is as follows:Internal modem — These are attached to the internal slot of the motherboard. They modulate digital data into analog signals for transmission and demodulate incoming analog signals into digital data.External modem — It is a small box connected to the communication port of the computer. It works similarly to the internal modem. The only difference is that it is placed outside the CPU box.

Question 10

Question 8Describe the following networking devices:(a) Hubs(b) Repeaters(c) Routers(d) Bridges(e) Gateways

Accepted Answer

(a) Hubs — Hub is a multi-port and unintelligent network device which simply transfers data from one port of the network to another. It is used to connect several computers together with different ports. When the data packet reaches one port, it is copied to all other ports of the hub without changing the destination address. They can both send as well as receive information but only one task at a time. Hubs can be either active or passive.(b) Repeaters — A repeater is a device that amplifies a signal transmitted across the network so that the signal is received in the same way as it is sent. It operates only at the physical layer of the OSI model. A repeater is a two-port network device that strengthens the signal intensity and connects two identical networks. A repeater does not change the functionality of the network; instead, it strengthens the signal before it degrades.(c) Routers — A router is a networking device that forwards data packets from the source machine to the destination machine over a network using the shortest path available. It can handle different protocols. Routers utilize IP addresses to connect local area networks to the Internet. In contrast to a hub or a switch, a router possesses advanced capabilities as it can analyze the data being transmitted over a network, make decisions on how it is packaged, and route it to different computer networks.(d) Bridges — A bridge is a device that operates at both the physical layer and the data link layer of the OSI model. It connects multiple network segments (LANs) at the data link layer (Layer 2) of the OSI model. It is a smarter hub as it can filter network traffic on the basis of the MAC addresses.(e) Gateways — A gateway is a network device that connects dissimilar networks. It provides the necessary translation of data received from one network into a format or protocol recognized by devices within another network. A gateway establishes an intelligent connection between a local area network and external networks with completely different structures.

Question 11

Question 10(a)Differentiate between MAN and WAN.

Accepted Answer

MAN (Metropolitan Area Network)WAN (Wide Area Network)MAN can cover a city with up to a 100 km radius.WAN can cover an entire country, continent or the globe.Networking cost of MAN is expensive.Networking cost of WAN is more expensive than MAN.Transmission speed of MAN is moderate.Transmission speed of WAN is low.Error rate of MAN is moderate.Error rate of WAN is the highest.Technologies or media used are optical fibre, radio waves and microwave.Technologies or media used are microwave and satellite.

Question 12

Question 10(b)Differentiate between Website and Web page.

Accepted Answer

Web PageWebsiteA web page is a basic unit of every website.A website is a collection of web pages, connected by links.Each web page is identified by a unique web address called Uniform Resource Locator (URL) within a domain.A website has all its web pages accessible via the same domain name.

Question 13

Question 10(c)Differentiate between Router and Gateway.

Accepted Answer

RouterGatewayA router is a networking device that helps in forwarding packets from source machine to the destination machine over a network by using the shortest path.A gateway is a device which establishes an intelligent connection between a local area network and external networks with completely different structures.Working principle of a router is to get routing details for multiple networks and routing traffic based upon the destination address.Working principle of a gateway is to differentiate what is inside the network and what is outside the network.The main function of a router is routing the traffic from one network to the other.The main function of a gateway is to translate one protocol to the other.

Question 14

Question 10(d)Differentiate between Bus and Star topology.

Accepted Answer

Star topologyBus topologyAll the devices in the network are connected by a central hub in the star topology.All the devices in this network are connected to a single cable - which acts as the backbone.The entire network would fail in case the central hub fails in the network.The entire network would fail in case the network cable fails.It requires more cables.It requires less cables.It is linear in nature.It is non-linear in nature. It is comparatively much easier to detect faults in the system.Various devices can be added using this configuration.The network only allows the addition of a limited number of devices.Data transmission is comparatively slower.Data transmission is comparatively faster.

Question 15

Question 10(e)Differentiate between Static and Dynamic web pages.

Accepted Answer

Static web pagesDynamic web pagesIn static web pages, the contents of the web pages remains fixed or unchanging. These web pages are loaded on the client's browser exactly in the same way as they are stored on the web server.A dynamic web page is created upon user request, displaying unique content based on interactions. Each view is tailored to the user and exist only for that moment.A user can only read the information but cannot make any modifications or interact with the data.Dynamic web page is an Interactive web page that is highly functional and users can interact with it.Static web pages are created by using only HTML.Dynamic web pages can be created by using ASP, PHP, or DHTML.

Question 16

Question 12Ravi, a Class X student, has just started understanding the basics of internet and web technologies. He is a bit confused between the terms 'World Wide Web' and 'Internet'. Help him understand both the terms giving suitable examples of each.

Accepted Answer

The World Wide Web (WWW) is a set of protocols that allows us to access any document on the Net through a naming system based on URLs. The WWW also specifies a way, known as the Hypertext Transfer Protocol (HTTP), to request and send hypermedia documents over the Internet.The Internet is a worldwide network of computer networks that allows all computers to exchange information with each other. They follow protocols like TCP/IP (Transmission Control Protocol/Internet Protocol) for communication.The WWW is a small part of the Internet. We can say that the Internet is a highway that offers many services and features, and the WWW is a vehicle (like a truck) that uses this highway to transport information.

Question 17

Question 13Mani wants to send a report on his trip to the North-East to his mentor. The report contains images and videos. How can he accomplish his task through the internet?

Accepted Answer

Mani can send his trip report with images and videos to his mentor through email by attaching files or using chat platforms like WhatsApp or Facebook Messenger, as these platforms support the sharing of image and video files.

Question 18

Question 14Ram is planning to open a company that deals with rural handicrafts. He wants to advertise about handicrafts on a social platform. Which internet service should he use and why?

Accepted Answer

Ram should use social networking platforms like Instagram and Facebook to advertise his handicrafts because they offer targeted advertising options that can reach a broad and diverse audience. Facebook provides a marketplace where he can sell his products directly and its cost effective.

Question 19

Question 15What are Wi-Fi cards? Explain.

Accepted Answer

A WiFi card is either an internal or external Local Area Network adapter with a built-in wireless radio and antenna. It is used in a desktop computer to enable a user to establish an Internet connection. WiFi cards are known as wireless fidelity cards because they allow users to set up connections without any wires.

Question 20

Question 16What is https? How does it work?

Accepted Answer

HTTPS stands for Hypertext Transfer Protocol Secure. It's a protocol that secures communication between two systems, like a browser and a web server, by encrypting data during transmission. When a user accesses a website using HTTPS, a secure connection is established, verifying the server's identity with digital certificates. This encryption and authentication ensure data privacy and integrity, crucial for protecting sensitive information such as passwords and financial data from interception or tampering by malicious entities on the Internet.

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