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
Explain what a QR code is and how it can be captured.
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A QR code (Quick Response code) is a two-dimensional barcode that can store information in a graphical format. It consists of black squares arranged on a white grid. QR codes can be captured using a digital camera or smartphone with a QR scanning feature. When scanned, the code directs the device to the encoded information, such as a URL or text.
Step 2
When completing a form online, how does personal information get automatically entered?
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This occurs through the use of autofill features provided by browsers or applications. When a user fills out a form for the first time, the browser may store the entered information, such as email addresses, in a cookie or local storage. On subsequent visits, the browser retrieves this stored information and suggests or automatically fills in the fields, thereby streamlining the user experience.
Step 3
Explain what multiprocessing is.
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Multiprocessing refers to the ability of a computer's operating system to execute multiple processes simultaneously. It utilizes more than one CPU or multiple cores within a single CPU to manage and run different tasks or operations concurrently. This increases efficiency and allows for smoother performance, especially when handling complex applications.
Step 4
Discuss how the operating system manages different processes to ensure adequate resources.
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The operating system allocates CPU time slices to each process, enabling them to run in a time-sharing environment. It schedules tasks using algorithms that prioritize processes based on their needs and allows for context switching, where the state of a process is saved, and control is passed to another process. This ensures that all applications can access necessary resources without interference.
Step 5
Critical discussion of at least TWO aspects comparing streaming and downloading.
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Speed of Access: Streaming allows users to start watching content immediately without waiting for a complete download, whereas downloading requires the entire file to be saved on a device before viewing.
Internet Dependency: Streaming services require a constant internet connection to access content, unlike downloaded material that can be viewed offline.
Step 6
State TWO characteristics of a Web 1.0 website.
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Static pages that do not change frequently, providing information without interactivity.
Use of simple HTML and basic CSS for web page design, with limited user engagement.
Step 7
Give any TWO reasons that led to websites evolving from Web 1.0 to Web 2.0.
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To allow users to contribute content, fostering interaction and collaboration.
The introduction of new web technologies, enabling enhanced features and dynamic content.
Step 8
Discuss why the data above might compromise the quality of input data.
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The data may compromise quality due to inconsistency in formatting (e.g., 'seven' vs '7'), which complicates data analysis. Furthermore, incorrect entries or variations in how information is captured can lead to data integrity issues, making it difficult to extract accurate information.
Step 9
State TWO different techniques on how the form could be optimised to prevent this type of input.
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Implementation of dropdown menus or combo boxes to standardize input choices, reducing variability.
Input masks that guide users in entering data correctly, helping to maintain uniformity.
Step 10
Provide the missing labels for parts (a) and (b).
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Data
(a) Information
(b) Knowledge
Decisions
Step 11
Why would a distributed database be a more suitable option for this scenario?
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A distributed database can accommodate many users and handle a large volume of data efficiently. It allows data to be accessed from multiple locations, reducing latency and increasing stability.
Step 12
Briefly explain how encryption works.
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Encryption transforms readable data into an encoded format using a specific algorithm and a key. This process ensures that even if the data is intercepted, it cannot be read without the corresponding decryption key, thereby protecting sensitive information.
Step 13
Suggest which distributed database model will be most suitable for this scenario and motivate your answer.
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The partitioned model would be most suitable, as it allows each server to store only the part of the data it works with. This minimizes traffic and enhances performance, ensuring that data retrieval remains efficient while maintaining consistency across locations.
Step 14
Give TWO examples of digital communication platforms that can be used to promote the open-day event.
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Social media platforms, such as Facebook or Instagram, to reach a wide audience.
Email newsletters targeted to parents and community members for direct communication.
Step 15
Which policy document can be used as motivation for the need to take disciplinary action?
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The Acceptable Usage Policy (AUP) outlines the expected behavior and consequences for unauthorized sharing of confidential information, making it relevant in this situation.
Step 16
State TWO potential risks associated with the use of ChatGPT.
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The potential for users to rely on inaccurate information generated without fact-checking, leading to misinformation.
Risks of plagiarism, as content generated may unintentionally replicate existing materials.