Informatics Practices
Quick 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 Block | 40 m |
| Law Block to Technology Block | 80 m |
| Law Block to HR Centre | 105 m |
| Business Block to Technology Block | 30 m |
| Business Block to HR Centre | 35 m |
| Technology Block to HR Centre | 15 m |
Number of computers in each of the buildings is as follows:
| Law Block | 15 |
| Technology Block | 40 |
| HR Centre | 115 |
| Business Block | 25 |
(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?
Computer Networks
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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.
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Sony 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 Z 40 m Zone Z to Zone Y 60 m Zone Y to Zone X 135 m Zone Y to Zone U 70 m Zone X to Zone U 165 m Zone Z to Zone U 80 m Number of Computers:
Zone X 50 Zone Z 130 Zone Y 40 Zone U 15 (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:
- Repeater
- Hub/Switch
(d) Which is the most economic type of cable for the selected topology ?
Bhartiya 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 From Place To Distance Back Office Front Office 10 km Back Office Work Office 70m Back Office East Office 1291 km Back Office West Office 790 km Back Office South Office 1952 km In continuation of the above, the company experts have planned to install the following number of computers in each of their offices:
Back Office 100 Front Office 20 Work Office 50 East Office 50 West Office 50 South Office 50 (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.
Prime 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 ACCOUNTS 55 m ADMIN to EXAMINATION 90 m ADMIN to RESULT 50 m ACCOUNTS to EXAMINATION 55 m ACCOUNTS to RESULT 50 m EXAMINATION to RESULT 45 m DELHI Head Office to MUMBAI Campus 1450 km Number of computers installed at various buildings:
ADMIN 110 ACCOUNTS 75 EXAMINATION 40 RESULT 12 DELHI Head Office 20 (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
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