Questions and Answers
How can data size be managed to reduce load on a digital ticketing system?
Data size can be managed by compressing data, using concise data formats, and eliminating unnecessary data storage.
What is a key principle of securing user data in a digital system?
The key principle is to securely transmit data and keep data size to a minimum to prevent unauthorized access and data breaches.
In the context of securing user passwords, what does the usability principle of safety entail?
The safety principle ensures that the algorithm is designed to prevent unauthorized access while allowing legitimate users to access their accounts safely.
What is a major security concern in the dentist's mobile van system?
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How does a VPN improve data security in the dentist's mobile van system?
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What is the purpose of a one-time pad algorithm in encryption?
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How does an 8-character word get encrypted using a one-time pad algorithm?
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What is the significance of using 0 as the first index in an array for encryption?
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What is the purpose of the GenerateOTPKey
function in the given pseudocode?
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What is the purpose of the alphabetLocation
variable in the given pseudocode?
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How does the given pseudocode ensure that the ciphertext is encrypted correctly?
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What is the purpose of the Schedules
screen in the smart home system?
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How would you symbolize the user interface for the Schedules
screen?
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What is the purpose of the universal password in the digital voting system?
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How would you structure the data for 'Candidate X' in XML format?
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What system features would ensure the implementation of the three voting rules?
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What is the purpose of integrating the voting system with the existing school database?
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How would you symbolize the data flow for a programmed component that enforces the voting rules while integrating the school database?
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Study Notes
Digital Ticketing System
- To reduce load and keep user data secure, the system follows two criteria: minimizing data size in data stores and securely transmitting data.
Managing Data Size and Security
- Minimize data size by: • Reducing unnecessary data storage • Compressing data • Storing only essential data
- Ensure data security by: • Encrypting data during transmission • Using secure protocols for data transfer • Implementing access controls and authentication
Algorithm for Securing User Password and Verifying Account
- BEGIN • INPUT username • INPUT password • Hash the password using a secure hashing algorithm • Store the hashed password securely • Verify the account by comparing the input password with the stored hashed password
Evaluating Security Impacts for Patient Data
- Two personal data security needs not being met: • Lack of secure log-in system for the computer in the van • Multiple staff accessing the email account without secure authentication
VPN Feature for Improving Data Security
- A VPN provides a secure feature by encrypting data transmission between the van's system and the central server, ensuring confidentiality and integrity of patient data.
Correcting the One-Time Pad Algorithm
- Errors corrected:
• Loop counter should be from 0 to 7, not 0 to 9
• Generate OTP key function should return an array of 8 random numbers
• Alphabet array should be used for indexing, not
alphabetLocation
• Output should be displayed outside the loop
User Interface for Smart Home System
- Home screen features: • Lists plugs alphabetically • Annotations describe the function of each element • Schedules allow users to set on/off schedules for individual smart plugs and groups
Schedules Screen User Interface
- Schedules screen features: • Multiple on/off times per day • Selecting any day of the week • Function of each element: • Tap text to change plug or group • Press calendar icon to go to Schedules screen • Add a new smart plug • Navigate back to previous screen
Evaluating User Interface for Accessibility
- Two additional features recommended to improve accessibility: • Voice control for users with mobility impairments • High contrast mode for users with visual impairments
Digital Voting System for Student Leadership Positions
- Programmed components: • Registration and login feature using a universal password and student/staff email address • List of candidates organised by nominated leadership positions • Ability to count votes
Unprogrammed Processes for Site Administration
- Unprogrammed processes include: • Distributing universal password to registered users via email on voting day • Importing candidate details and nominations in XML format • Checking/verifying votes • Publishing results
Candidate Data Structure in XML Format
- XML structure for "Candidate X":
•
• `Candidate X` • `Year 11` • `esports captain` •
Ensuring Implementation of Voting Rules
- System features to ensure implementation of voting rules: • Unique login credentials for each user • Time-based voting system (8:30 am - 4:00 pm) • Limiting votes to one per user
Integrating Voting System with School Database
- Data flow for enforcing voting rules while integrating with school database: • School database provides student and staff profiles • Voting system verifies user credentials and checks for conflicts of interest • Voting system ensures one vote per user and enforces time-based voting rules • Results are published and stored securely
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Description
The quiz assesses knowledge on data management strategies for a digital ticketing system, focusing on minimizing data size and ensuring secure data transmission.