IB Year 2 Higher Level Computer Science

Wednesday 5 February 2025 - Block 5

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Daily Note

Hello.

I'll be out the rest of the week. We do not have the luxury of waiting, so we need to start learning about our next unit in web science, distributed approaches to the web. Your test on search will happen when I come back. 

Today we will learn about Decompression software in the transfer of information

1. Please scan through this wiki page on decompression software
2. Please make sure you can clearly define decompression software
3. Please complete the quiz below and check out the markscheme but not before you have tried your work:

Questions

1. Define decompression software and its role in data transmission. [2 marks]

2. Explain two benefits of using decompression software when transferring large data files. [4 marks]

3. Describe two potential drawbacks of using decompression software. [4 marks]

4. Discuss how decompression software can improve compatibility between different systems and applications. [6 marks]

5. Evaluate the overall effectiveness of decompression software in the transfer of information, considering both advantages and disadvantages. [8 marks]

 

 

Markscheme

Question 1: Define decompression software and its role in data transmission. [2 marks]

• 1 mark for defining decompression software (e.g., software used to restore compressed data to its original form).
• 1 mark for stating its role in data transmission (e.g., enabling data to be sent in a compressed format and then restored).

Question 2: Explain two benefits of using decompression software when transferring large data files. [4 marks]

• 2 marks for identifying two benefits (e.g., improved transmission speeds, reduced storage requirements, reduced costs).
• 2 marks for explaining how these benefits work in practice.

Question 3: Describe two potential drawbacks of using decompression software. [4 marks]

• 2 marks for identifying two drawbacks (e.g., increased processing power needed, security vulnerabilities).
• 2 marks for describing how these drawbacks impact system performance or security.

Question 4: Discuss how decompression software can improve compatibility between different systems and applications. [6 marks]

• 2 marks for explaining how decompression allows data to be restored to its original form.
• 2 marks for discussing how this restoration improves compatibility (e.g., avoiding format mismatches).
• 2 marks for considering a potential challenge or limitation (e.g., dependency on specific decompression software).

Question 5: Evaluate the overall effectiveness of decompression software in the transfer of information, considering both advantages and disadvantages. [8 marks]

• 2 marks for stating advantages (e.g., improved transmission speeds, reduced costs).
• 2 marks for stating disadvantages (e.g., processing power requirements, security concerns).
• 2 marks for weighing the advantages against the disadvantages with reasoning.
• 2 marks for providing a justified conclusion on the overall effectiveness of decompression software.

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Reminders & routines:

Please read and follow these reminder

1. IF today == Friday:
        careers_in_computing()

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