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Figure 8 shows island A, a fully developed island off the mainland coast - AQA - A-Level Physics - Question 5 - 2022 - Paper 8
Question 5
Figure 8 shows island A, a fully developed island off the mainland coast. The island is connected to the mainland by a fibre optic cable lying along the seabed and i... show full transcript
Worked Solution & Example Answer:Figure 8 shows island A, a fully developed island off the mainland coast - AQA - A-Level Physics - Question 5 - 2022 - Paper 8
Step 1
Outline the way each communications system operates
Answer
The fibre optic cable system operates by transmitting data through light signals that undergo total internal reflection within the fiber. The light is modulated to carry information and can transmit large amounts of data over long distances with minimized signal loss. In contrast, the satellite communication system works by transmitting signals to a satellite, which then relays the information down to a receiving station. This allows for wider coverage and is particularly useful in remote areas where cable connections are not practical.
Step 2
Suggest, with reasons, your choice of system for island B
Answer
For island B, I would recommend a fibre optic cable solution. This is because fibre optics provide high bandwidth capabilities, which are essential for the expected increased data demands of a holiday resort. Additionally, the connectivity can be established quickly since the existing fiber optic cable connected to island A can be extended to island B, thereby reducing deployment time and costs.
Step 3
Suggest, with reasons, your choice of system for oil rig C
Answer
For oil rig C, I would suggest using a satellite communication system. This is due to the mobility of the oil rig and the necessity for constant communication with teams onshore. Satellite systems can easily provide a robust connection without the need for extensive cabling, which is impractical in marine environments. Moreover, the satellite link allows for immediate communication capabilities, essential during the exploratory phase.