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Open days at schools are used to take learners on tours where they can see the facilities of the institution - NSC Information Technology - Question 6 - 2023 - Paper 2
Question 6
Open days at schools are used to take learners on tours where they can see the facilities of the institution. 6.1 Registration for an open-day event at a school tak... show full transcript
Worked Solution & Example Answer:Open days at schools are used to take learners on tours where they can see the facilities of the institution - NSC Information Technology - Question 6 - 2023 - Paper 2
Step 1
6.1.1 Explain what a QR code is and how it can be captured.
Answer
A QR code is a type of two-dimensional barcode that can store information like URLs or text. QR codes can be captured using a digital camera or a smartphone equipped with a QR code scanning application. When the camera scans the code, the device decodes the information and displays the linked content.
Step 2
6.1.2 When completing a form online, it often happens that personal information, such as your e-mail address, is automatically entered into the fields. How does that happen?
Answer
This is often accomplished through features like autofill, which utilizes stored information from cookies or previous interactions to automatically fill in fields in online forms. Browsers save personal information securely, allowing for quick input during subsequent form submissions.
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6.2.2(b) Discuss how the different processes are managed by the operating system to ensure that all applications will have adequate resources.
Answer
The operating system manages processes by allocating CPU time, memory, and storage resources to ensure that each application can run smoothly. It utilizes scheduling algorithms to prioritize tasks and ensures that processes do not interfere with each other, enabling efficient multitasking.
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6.2.2(a) Explain the concept of web caching.
Answer
Web caching is the process of storing copies of web resources on temporary storage locations, such as local servers or the user's device. This allows for faster access to frequently visited websites by loading them from the cache instead of retrieving them from the original server every time.
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6.2.3 Discuss the increased use of streaming material rather than downloading.
Answer
Streaming allows users to access content instantly without downloading it completely. It can conserve storage space, requires less initial bandwidth, and provides immediate playback. However, it depends on stable internet connections, whereas downloading allows for offline access and typically retains content permanently.
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6.4.1 Discuss why the data above might compromise the quality of input data.
Answer
The data may compromise quality due to inconsistencies in naming conventions, such as variations in the representation of grades (e.g., '7' vs. 'Seven'). This can lead to difficulties in data analysis and error-prone outputs.
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6.4.2 State TWO different techniques on how the form in which the data is captured, could be optimised to prevent this type of input.
Answer
- Implementing selection components like dropdown menus to standardize inputs.
- Using input masks to guide users in entering data in a consistent format.
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6.5.1 Why would a distributed database be a more suitable option for this scenario?
Answer
A distributed database is suitable as it can accommodate many users, handle increased traffic effectively, and ensure data is accessible from various locations. This enhances performance and reduces bottlenecks.
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6.5.3 Suggest which distributed database model will be most suitable for this scenario and motivate your answer.
Answer
A partitioned distributed database model is most suitable as it allows each server to store only the data portion they manage. This improves efficiency, reduces redundancy, and ensures data is handled securely without overwhelming a single server.
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