IB Year 2 Higher Level Computer Science
Wednesday 5 February 2025 - Block 5
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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
- Please scan through this wiki page on decompression software
- Please make sure you can clearly define decompression software
- Please complete the quiz below and check out the markscheme but not before you have tried your work:
Questions
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Define decompression software and its role in data transmission. [2 marks]
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Explain two benefits of using decompression software when transferring large data files. [4 marks]
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Describe two potential drawbacks of using decompression software. [4 marks]
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Discuss how decompression software can improve compatibility between different systems and applications. [6 marks]
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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.
Statement of Inquiry
The big idea for today is Web science.
The essential questions for this topic are:
What is the web, really? How is the web made? How do we design and build web-based applications?
It takes time to explore and really understand a big idea. If you want to
learn more about
web science (which is connected to today's daily note),
please click here
.
We are learning this because as a designers must understand scientific and technical innovation. Designers use systems, models, methods, and processes to solve problems.
Our learning
This is a beta feature. Please let me know if you have any feedback.
Please click here to reflect on our learning for today's class.