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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 | FTP |
| Checking for new emails in their inbox | IMAP or POP3 |
Step 2
Give two reasons why protocols have layers.
Answer
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Layers help to simplify networking by dividing the task into smaller, manageable sections, allowing for easier troubleshooting and development.
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They enable interoperability between different types of communication technologies by standardizing the processes at each layer.
Step 3
Describe the benefits of the student changing their home LAN to include wireless connections.
Answer
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Flexibility and mobility allow the student to use devices throughout their home without being tethered to a physical connection.
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Additional devices can be easily connected without the need for additional cabling, making it cost-effective in the long run.
Step 4
State two drawbacks of changing their home LAN to include wireless connections.
Answer
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Wireless connections may be subject to interference or weaker signals, resulting in slower speeds compared to wired connections.
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Security risks may increase as wireless networks can be more susceptible to unauthorized access if not properly secured.