eoy exam

• what is the definition of an online booking system ? Systems that allow users to book and pay for services online, such as travel, events, or appointments.
• Advantages and disadvantages of online booking systems?

  • Advantages: Convenience, 24/7 accessibility, instant updates, reduced errors, and improved customer service.
  • Disadvantages: Security risks, system failures, and possible lack of human interaction.
• • Types of Software: Application software (e.g., word processors, spreadsheets), system software (e.g., operating systems), and utility software (e.g., antivirus programs).
• Digital Devices

  • Examples: Smartphones, tablets, laptops, desktops, smartwatches.
  • Functions: Communication, entertainment, productivity, information access.
  • Impact: Enhances connectivity, provides convenience, but may lead to issues like digital addiction.
• Benefits of Online Systems

  • Efficiency: Speeds up processes and reduces paperwork.
  • Accessibility: Available from anywhere with an internet connection.
  • Cost Savings: Reduces the need for physical resources.
• Encryption

  • Definition: The process of converting data into a code to prevent unauthorized access.
  • Types: Symmetric (same key for encryption and decryption) and asymmetric (public and private keys).
  • Importance: Ensures data security and privacy
• The Roles of a Server

  • Functions: Provides resources, services, and data to client devices.
  • Types: File servers, print servers, web servers, database servers.
• Types of Networks

  • LAN (Local Area Network): Connects devices within a small geographic area.
  • WAN (Wide Area Network): Connects devices over large distances.
  • PAN (Personal Area Network): Connects personal devices within a close range.
• • Client-Server: Centralized management, resources provided by the server.
  • Peer-to-Peer: Decentralized, all devices can share resources equally.
• Benefits of Wired and Wireless Networks

  • Wired: Stable connection, higher speeds, less interference.
  • Wireless: Flexibility, mobility, easier installation.
• Roaming Profiles and Hotdesking

  • Roaming Profiles: User settings and files follow them across different networked computers.
  • Hotdesking: Users can work at any available workstation within an office.
• Impact of RAM on User Experience

  • Definition: RAM (Random Access Memory) is temporary storage that a computer uses to run programs.
  • Impact: More RAM allows for smoother multitasking and faster performance.
• CPU Speed and Number of Instructions

  • CPU Speed: Measured in GHz, determines how fast a CPU can process instructions.
  • Instructions: More instructions per cycle improve performance.
• Storage Devices: Optical, Device, Media

  • Optical Storage: CDs, DVDs, Blu-ray discs.
  • Usage: Storing media files, software, backups.
• Operating System Roles

  • Functions: Manages hardware, runs applications, provides user interface, handles files and security.
• Memory Management

  • Definition: The process of controlling and coordinating computer memory, assigning blocks to various running programs.
  • Purpose: Ensures efficient use of memory, prevents conflicts and crashes.
• Utility Software

  • Purpose: Helps manage, maintain, and control computer resources.
  • Examples: Disk cleaners, antivirus programs, backup software.
• Online Communities

  • Examples: Social media, forums, online gaming.
  • Benefits: Facilitates communication, information sharing, and support networks.
• Risks to Online Safety

  • Examples: Cyberbullying, phishing, malware.
  • Prevention: Use of strong passwords, updated security software, awareness of scams.
• Cookies

  • Definition: Small data files stored on a user’s computer by websites to remember preferences and track behavior.
  • Usage: Enhances user experience, personalizes content.
• Data Protection

  • Principles: Lawful processing, data minimization, accuracy, storage limitation, integrity, and confidentiality.
  • Importance: Ensures individuals' privacy and security of their data.
• Difference between GiB, MiB, TiB

  • GiB (Gibibytes): 1 GiB = 2^30 bytes.
  • MiB (Mebibytes): 1 MiB = 2^20 bytes.
  • TiB (Tebibytes): 1 TiB = 2^40 bytes.