Digital Data and Systems
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Questions and Answers

What is the primary function of a database in digital technology?

  • To create a network of computers
  • To make data easy to store, organise and search (correct)
  • To provide network security
  • To calculate values from data using various formulae
  • What is the term used to describe the physical components of a computer system?

  • Software
  • Hardware (correct)
  • Cyberspace
  • Network
  • What is the primary purpose of antivirus software?

  • To protect against malware and viruses (correct)
  • To update the operating system
  • To create a network of computers
  • To optimize system performance
  • What is the term used to describe the connection of computers together to share data, software, and hardware?

    <p>Network</p> Signup and view all the answers

    What is the primary function of a spreadsheet in digital technology?

    <p>To calculate values from data using various formulae</p> Signup and view all the answers

    What is the term used to describe the potential threats to data security in the era of the internet and cloud computing?

    <p>Threats to data security</p> Signup and view all the answers

    Study Notes

    Digital Data

    • Digital data refers to information that is stored, processed, and transmitted in a binary format using computers
    • It is represented using bits (0s and 1s), which are used to form bytes that represent characters, numbers, and other data types
    • Digital data can be stored on physical devices such as hard drives, solid-state drives, and flash drives

    System Software

    • System software manages and controls computer hardware components to perform specific tasks
    • Its functions include:
      • Process management: managing CPU time, memory allocation, and I/O operations
      • Memory management: allocating memory for running programs
      • File management: creating, deleting, and managing files
      • Security management: controlling access to system resources
    • Modes of processing include:
      • Batch processing: executing tasks in batches
      • Time-sharing: allocating CPU time slices to multiple users
      • Real-time processing: executing tasks in real-time

    Utility Applications

    • Utility applications are system software that perform specific maintenance or management tasks
    • Examples include:
      • Disk formatting and defragmentation tools
      • File compression and encryption utilities
      • Virus scanners and antivirus software

    Antivirus Software and System Updates

    • Antivirus software detects and removes malware and viruses from computer systems
    • Regular system updates are essential to:
      • Fix security vulnerabilities
      • Improve system performance
      • Add new features and functionality

    Databases

    • Databases are systems that store, organize, and retrieve data efficiently
    • They make it easy to store, organize, and search large amounts of data
    • Database management systems provide a structured way to manage data

    Spreadsheets

    • Spreadsheets are software applications that store and analyze data in a tabular format
    • They can be used to:
      • Calculate values from data using formulae
      • Perform data modeling and simulation
      • Create visual representations of data, such as charts and graphs

    Hardware and Network Technologies

    • Hardware refers to the physical components of a computer system, including:
      • CPU, memory, and storage devices
      • Input and output devices, such as keyboards and monitors
    • Network technologies connect computers together to share:
      • Data
      • Software
      • Hardware resources

    Network Security and Data Transfer

    • Networks make computers more powerful, but also more vulnerable to attacks
    • Threats to data security include:
      • Unauthorized access and hacking
      • Malware and viruses
      • Data breaches and cyber-attacks
    • The advent of digital technology has radically affected our lives, with both positive and negative consequences
    • Ethical considerations include:
      • Privacy and data protection
      • Cybersecurity and online safety
      • Digital divide and accessibility
    • Legal considerations include:
      • Data protection laws and regulations
      • Intellectual property rights
      • Cybercrime and online laws
    • Environmental impact includes:
      • E-waste and electronic waste disposal
      • Energy consumption and carbon footprint
      • Sustainable technology and environmentally-friendly practices

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    Description

    Learn about digital data, its representation, storage, and sharing. Understand system software functions, utility applications, and antivirus software. Explore databases and spreadsheet applications for data management and analysis.

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