Question

Consider the following scenario:

Center to center distances between various buildings as per architectural drawings (in meters) is as follows:

| Main Building to Resource Building | 120 m |
| Main Building to Training Building | 40 m |
| Main Building to Accounts Building | 135 m |
| Resource Building to Training Building | 125 m |
| Resource Building to Accounts Building | 45 m |
| Training Building to Accounts Building | 110 m |

Expected number of computers in each building is as follows :

| Main Building | 15 |
| Resource Building | 25 |
| Training Building | 250 |
| Accounts Building | 10 |

(i) Suggest a cable layout of connection between the buildings.

(ii) Suggest the most suitable place (i.e. building) to house the server of this NGO. Also provide a suitable reason for your suggestion.

(iii) Suggest the placement of the following devices with justification:

Repeater

Hub/Switch

(iv) The NGO is planning to connect its International office situated in Delhi. Which out of following wired communication links, will you suggest for very high speed connectivity?

(i) Telephone Analog Line

(ii) Optical Fibre

(iii) Ethernet Cable

Answer 1

(i)

(ii) Max. no of computers (250) in training building so the server can be placed here.

(iii) Every building has more than 2 computers, so hub is required in every building.

Repeaters are used if distance is greater than 70m so repeater is required between training and accounts building.

(iv) Optical fiber has the highest speed of connectivity.