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The owners of a large bakery have a Local Area Network (LAN) with a star topology - OCR - GCSE Computer Science - Question 7 - 2019 - Paper 1
Question 7
The owners of a large bakery have a Local Area Network (LAN) with a star topology. They order their supplies over the Internet. When data is transmitted from the bak... show full transcript
Worked Solution & Example Answer:The owners of a large bakery have a Local Area Network (LAN) with a star topology - OCR - GCSE Computer Science - Question 7 - 2019 - Paper 1
Step 1
Define what is meant by a ‘network protocol’
Answer
A 'network protocol' is a set of rules and conventions that determine how data is transmitted and received over a network. Protocols facilitate communication between network devices, ensuring that they can understand and interpret the data being exchanged. Examples include Transmission Control Protocol (TCP), Internet Protocol (IP), and Hypertext Transfer Protocol (HTTP).
Step 2
With regards to network protocols, define what is meant by a ‘layer’
Answer
In the context of network protocols, a 'layer' refers to a distinct level of communication that provides a specific function in the overall transmission process. Each layer is responsible for different aspects of data transmission, such as packaging, addressing, routing, and error checking. The layered architecture simplifies the design and implementation of networking by allowing independent development and management of each layer.
Step 3
Describe one advantage of using layers to construct network protocols
Answer
One advantage of using layers to construct network protocols is that it promotes modularity and simplifies troubleshooting. When issues occur, it is easier to isolate problems within a specific layer without affecting other layers. This modularity allows for the independent updating or replacement of protocols at different layers without necessitating a complete redesign of the overall system.
Step 4
Give two reasons why the bakery may use a star network topology for their LAN
Answer
- Improved Reliability: A star topology allows for individual connections between devices and the central hub. If one connection fails, it does not impact the entire network, enhancing reliability.
- Ease of Maintenance: The star network is easier to troubleshoot and maintain. Problems can be quickly identified without interrupting the operation of the rest of the network, facilitating efficient repairs or upgrades.