Question 1

Question 1Assertion (A): ARPANET was the first computer network created in the year 1969 by Advanced Research Projects Agency (ARPA) of the Pentagon, USA.Reasoning (R): The objective of creating ARPANET was to develop a reliable communication network for the US military defence services for sending and receiving instant messages.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationARPANET, jointly designed and named by the Advanced Research Projects Agency (ARPA) and the US Department of Defense (DoD), was the first computer network and came into existence in 1969. The objective of creating ARPANET was to develop a reliable communication network for the US military defense services, enabling them to send and receive instant messages and share data.

Question 2

Question 2Assertion (A): Internet cookies are text files that contain small pieces of data, like a username, password and user's preferences while surfing the internet.Reasoning (R): To make browsing the internet faster and easier, it is required to store certain information on the server's computer.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationInternet cookies are small text files that contain small pieces of data such as usernames, passwords, and user preferences while surfing the internet. They are messages transmitted by a web server to a web browser, allowing the server to keep track of the user's activity on a specific website.

Question 3

Question 3Assertion (A): A router is more reliable and intelligent device than a Hub or Switch.Reasoning (R): Router has advanced capabilities as it can analyze data and decide how it is packaged and sent to other networks.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA router is considered as a more reliable and intelligent device than a hub or switch because it has advanced capabilities to analyze the data being sent over a network, decide or alter how it is packaged, and send it to different computer networks.

Question 4

Question 4Assertion (A): A PAN (Personal Area Network) is established within the vicinity of a room (20 to 30 sq. ft.) for sharing information among computers.Reasoning (R): A WAN (Wide Area Network) spans thousands of kilometres and is used to establish connectivity across several countries and continents.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationPANs (Personal Area Networks) are small networks used to establish communication between a computer and other devices in proximity, typically up to 10 meters (20 to 30 sq.ft.). On the other hand, a WAN (Wide Area Network) spans a large geographical area across countries and continents. A WAN can cover an area with a radius spanning hundreds of kilometers.

Question 5

Question 5Assertion (A): A Repeater is a device that amplifies the network over geographical distance.Reasoning (R): A Hub is a device which is used to connect more than one device in the network.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationA repeater is a device that amplifies a signal transmitted across the network so that the signal is received in the same way it is sent. A hub is a hardware device used to connect several computers together using different ports.

Question 6

Question 6Assertion (A): VoIP stands for Voice over Internet Protocol.Reasoning (R): VoIP is a technology that allows you to make voice calls using a broadband connection instead of a regular phone line.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationVoIP stands for Voice over Internet Protocol, and it is a technology that allows us to make voice calls using a broadband connection instead of a regular phone line. The voice calls are first digitized, compressed, and then fragmented into small packets, which are then relayed by Internet Protocol (IP) across the network.

Question 7

Question 7Assertion (A): A protocol defines the set of rules that are applicable for data sharing and communication over a network.Reasoning (R): Local Area Network (LAN) is an example of protocol.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationA protocol defines the set of rules and regulations applicable for data sharing and communication over a network. It is a formal description of message formats and the rules that devices must follow to exchange those messages. However, Local Area Network (LAN) is not an example of a protocol, rather, it is a type of computer network.

Question 8

Question 8Assertion (A): A gateway is a network device that connects dissimilar networks.Reasoning (R): A gateway establishes a connection between local network and external network.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA Gateway is a network device that connects dissimilar networks. Gateway provides the necessary translation of data received from network into a format or protocol recognized by devices within the internal network establishing an intelligent connection between the two.

Question 9

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 10

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 11

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 12

Question 4Great Studies University is setting up its academic schools at Sunder Nagar and planning to set up a network. The university has 3 academic schools and one administration centre as shown in the diagram below:Centre-to-centre distance between various buildings:Law School to Business School60 mLaw School to Technology School90 mLaw School to Admin Centre115 mBusiness School to Technology School40 mBusiness School to Admin Centre45 mTechnology School to Admin Centre25 mNumber of computers in each of the Schools/Centre:Law School25Technology School50Admin Centre125Business School35(a) Suggest the most suitable place (i.e., schools/centre) to install the server of this university with a suitable reason.(b) Suggest an ideal topology for connecting these schools/centre.(c) Which device will you suggest to be placed/installed in each of these schools/centre to efficiently connect all the computers within these schools/centre?(d) The university is planning to connect its admission office in the closest big city, which is more than 350 km from the university. Which type of network out of LAN, MAN or WAN will be formed? Justify your answer.

Accepted Answer

(a) The most suitable place to install server of the university is Admin center because it has the maximum number of computers. This will help to keep maximum percentage of the network traffic local.(b) A star topology is ideal for connecting the schools and centre.(c) A Switch should be installed in each school/centre to efficiently connect all computers. Switches provide high-speed connections and efficient data transmission within local networks.(d) A Wide Area Network (WAN) will be formed to connect the university's admission office in the closest big city, which is over 350 km away. WANs cover large geographic areas, such as different cities or countries.

Question 13

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 14

Question 6Sony has set up its branch at Srinagar for its office and web-based activities. It has four Zones of buildings as shown in the diagram:Branch-to-branch distance is:Zone X to Zone Z40 mZone Z to Zone Y60 mZone Y to Zone X135 mZone Y to Zone U70 mZone X to Zone U165 mZone Z to Zone U80 mNumber of Computers:Zone X50Zone Z130Zone Y40Zone U15(a) Suggest the most suitable cable layout or network topology of connections between the zones.(b) Suggest the most suitable place (i.e., Zone) to house the ERP and BI Server of this organization with a suitable reason, with justification.(c) Suggest the placement of the following devices with justification:RepeaterHub/Switch(d) Which is the most economic type of cable for the selected topology ?

Accepted Answer

(a) The most suitable cable layout or network topology for connecting the zones is a bus topology.(b) The most suitable place (i.e., Zone) to house the ERP and BI Server is Zone Z as it has the maximum number of computers which will reduce cabling cost.(c)(i) As per the suggested layout, separate repeaters need not to be installed as distance among zones is not exceeding 70m.(ii) Hub/Switch should be placed in each zone.(d) An economic type of cable is Ethernet or Coaxial cable as it can connect two computers at an economic rate though it provides lesser speed than other expensive methods.

Question 15

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 16

Question 8Quick Learn University is setting up its academic blocks at Prayag Nagar and planning a network. The university has 3 academic blocks and one human resource centre as shown in the diagram given below:Centre-to-centre distance between various blocks is as follows:Law Block to Business Block40 mLaw Block to Technology Block80 mLaw Block to HR Centre105 mBusiness Block to Technology Block30 mBusiness Block to HR Centre35 mTechnology Block to HR Centre15 mNumber of computers in each of the buildings is as follows:Law Block15Technology Block40HR Centre115Business Block25(a) Suggest a cable layout of connection between the blocks.(b) Suggest the most suitable place to house the server of the organization with suitable reason.(c) Which device should be placed/installed in each of these blocks to efficiently connect all the computers within these blocks?(d) The university is planning to link its sales counters situated in various parts of the same city. Which type of network out of LAN, MAN or WAN will be formed?

Accepted Answer

(a) Cable layout of connection between the blocks is shown below:(b) The most suitable place to house the server would be the HR Centre because it has the highest number of computers (115).(c) A Switch/Hub should be placed in each block to efficiently connect all computers.(d) A MAN (Metropolitan Area Network) will be formed to link the sales counters situated in various parts of the same city.

Question 17

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 18

Question 1Through Internet we can establish contact with anyone in the world.

Accepted Answer

Please refer to the full solution above.

Question 19

Question 2The main function of TCP is to divide the message or data into packets of a definite size on the source computer.

Accepted Answer

Please refer to the full solution above.

Question 20

Question 3Wi-Fi refers to wireless fidelity which enables us to connect to the ISP without any cable.

Accepted Answer

Please refer to the full solution above.

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