Informatics Practices
XYZ Media house campus is in Delhi and has 4 blocks named Z1, Z2, Z3 and Z4. The tables given below show the distance between different blocks and the number of computers in each block.
| Block Z1 to Block Z2 | 80 metres |
| Block Z1 to Block Z3 | 65 metres |
| Block Z1 to Block Z4 | 90 metres |
| Block Z2 to Block Z3 | 45 metres |
| Block Z2 to Block Z4 | 120 metres |
| Block Z3 to Block Z4 | 60 metres |
Number of computers installed at various buildings are as follows :
| Block | Number of computers |
|---|---|
| Z1 | 135 |
| Z2 | 290 |
| Z3 | 180 |
| Z4 | 195 |
The company is planning to form a network by joining these blocks.
(i) Out of the four blocks on campus, suggest the location of the server that will provide the best connectivity. Explain your response.
(ii) For very fast and efficient connections between various blocks within the campus, suggest a suitable topology and draw the same.
(iii) Suggest the placement of the following devices with justification
- Repeater
- Hub/Switch
(iv) VoIP technology is to be used which allows one to make voice calls using a broadband internet connection. Expand the term VoIP.
(v) The XYZ Media House intends to link its Mumbai and Delhi centers. Out of LAN, MAN, or WAN, what kind of network will be created? Justify your answer.
Answer
(i) Block Z3 has the shortest distances to all other blocks :
Z3 to Z1: 65 metres
Z3 to Z2: 45 metres
Z3 to Z4: 60 metres
Considering this, Block Z3 could be a good location for the server to provide the best connectivity within the XYZ Media House campus.
(ii) For fast and efficient connections between blocks, a Star Topology would be suitable. In a Star Topology, all blocks are connected directly to a central device (the server in this context).
(iii) The placement of devices:
- Repeater — A repeater should be placed between Z2 block and Z4 block due to the 120-meter distance, as it is used to regenerate and amplify signals to cover longer distances without losing quality.
- Hub/Switch — A hub or switch connects multiple devices within a compound, allowing them to communicate with each other and the broader network. So, there should be one hub per block.
(iv) VoIP stands for Voice over Internet Protocol.
(v) To link Mumbai and Delhi centers, a WAN (Wide Area Network) would be created. WANs are designed to connect networks across large geographical areas, making them suitable for inter-city or inter-region communication. Given the distance of connecting two different city centers, a WAN provides the necessary infrastructure and scalability for such connectivity.
Related Questions
Write suitable SQL queries for the following :
(i) To calculate the exponent for 3 raised to the power of 4.
(ii) To display current date and time.
(iii) To round off the value -34.4567 to 2 decimal place.
(iv) To remove all the probable leading and trailing spaces from the column userid of the table named user.
(v) To display the length of the string ‘FIFA World Cup’.
Kabir has created the following table named exam :
RegNo Name Subject Marks 1 Sanya Computer Science 198 2 Sanchay IP 100 3 Vinesh CS 90 4 Sneha IP 99 5 Akshita IP 100 Help him in writing SQL queries to perform the following tasks :
(i) Insert a new record in the table having following values : [6, 'Khushi', 'CS', 85]
(ii) To change the value "IP" to "Informatics Practices" in Subject column.
(iii) To remove the records of those students whose marks are less than 30.
(iv) To add a new column Grade of suitable datatype.
(v) To display records of "Informatics Practices" subject.
The heights of 10 students of eighth grade are given below :
Height_cms = [145, 141, 142, 142, 143, 144, 141, 140, 143, 144]Write suitable Python code to generate a histogram based on the given data, along with an appropriate chart title and both axis labels. Also give suitable python statement to save this chart.
Write suitable Python code to create 'Favourite Hobby' Bar Chart as shown below :
Also give suitable python statement to save this chart.