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A student is performing a range of actions on the internet using their computer - OCR - GCSE Computer Science - Question 2 - 2023 - Paper 1
Question 2
A student is performing a range of actions on the internet using their computer. (a) A range of protocols are used for the transmission of data by the student’s com... show full transcript
Worked Solution & Example Answer:A student is performing a range of actions on the internet using their computer - OCR - GCSE Computer Science - Question 2 - 2023 - Paper 1
Step 1
Complete the table by identifying the most appropriate protocol for each of the tasks the student is performing.
Answer
| Task | Protocol |
|---|---|
| Requesting to view a news webpage from a web server | HTTP |
| Entering a username and password to access their bank account | HTTPS |
| Downloading a text document from a web server | HTTP/FTP |
| Checking for new emails in their inbox | IMAP/POP3 |
Step 2
Give two reasons why protocols have layers.
Answer
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Simplification: Layering breaks down complex processes into simpler, manageable parts, allowing for easier troubleshooting and development.
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Interoperability: It allows different technologies and protocols to work together while maintaining modularity, facilitating updates and enhancements.
Step 3
Describe the benefits of the student changing their home LAN to include wireless connections.
Answer
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Mobility: Wireless connections allow the student to access the internet from anywhere within the range of the network, providing greater convenience while studying or browsing.
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Multiple Device Connectivity: A wireless LAN can support a variety of devices such as laptops, tablets, and smartphones simultaneously, enhancing the overall utility of the network.
Step 4
State two drawbacks of changing their home LAN to include wireless connections.
Answer
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Security Risks: Wireless networks can be more vulnerable to unauthorized access unless proper security measures like encryption and strong passwords are implemented.
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Signal Interference: The performance of a wireless connection can be affected by physical obstructions, other electronic devices, or distance from the router, leading to connectivity issues.