Term Two Review Session for Grade 12

Overview

• Topics Covered:
  1. Internet and Wide Area Networks (WAN)
  2. Internet Connections
  3. Internet Services
  4. Dangers of Computer Crime
  5. Protection against Computer Crime

Internet and Wide Area Networks (WAN)

• Definition of Internet: Must know and be able to define.
• Wide Area Network (WAN):
  • Network spanning multiple geographical areas.
  • Example required.

Internet Connections

• ISP (Internet Service Provider):
  • Definition and example needed.
  • Services rendered by ISPs.
• Criteria for Internet Connections:
  • Scenario-based decisions (e.g., home office, computer lab setup).
  • Wired vs. wireless connections.
  • Factors: data limits, mobility, data needs, upload vs. download speed, bandwidth, shaped vs. unshaped connections, throttling.
• Wired Connections: ADSL vs. Fiber.
  • Advantages and disadvantages (know at least two).
• Wireless Connections:
  • Hotspots and routers.
  • Internet access using smartphones and tablets.
• Internet Technologies: 3G, 4G, 5G
  • Next-gen technologies and their improvements.

Internet Services

• Real-time Messaging: Known and widely used.
• VoIP (Voice over Internet Protocol):
  • Examples: Skype, WhatsApp calls, Zoom.
  • Advantages and disadvantages.
• Video Conferencing:
  • Setup considerations (camera, internet, lighting, hardware, microphone).
  • Advantages, disadvantages, and practical application.
• Cloud Computing:
  • Working with software online (e.g., Gmail, Google Drive).
  • Advantages and disadvantages.
• Online Storage:
  • Use from Grade 10 and 11 as a foundation.
  • Examples: Google Drives.
  • Limitations: Suitable for large files, internet connection required.
• File Sharing and Email:
  • Email attachment limits and necessity for compression software.
  • FTP (File Transfer Protocol).
• Grid Computing: Definition and example.

Dangers of Computer Crime

• Social Engineering
• Malware: Definitions and techniques.
  • Phishing vs. Pharming.
  • Clickjacking: Redirects to unintended sites.
  • Spoofing: Forgery of email headers.
  • Spyware: Background software monitoring activities.
  • Keyloggers: Recording keystrokes.
  • Computer virus and general malware.
  • Computer worms: Network propagation.
  • Trojans and Ransomware.
  • Adware, Bots.
• Categories of Computer Crime:
  • Cyber stalking, spam, cyber bullying, internet attacks (cyber terrorism), bandwidth theft, identity theft, processing time theft (non-school related computer use), data and intellectual property theft, and money and copyrighted material theft.

Protection against Computer Crime

• Antivirus Software: Must be updated regularly.
• Precautionary Measures:
  • Check for secure icons and HTTPS protocol.
  • Good password policies.
  • Stay informed about tips and reports.
  • Avoid giving out personal information online.
  • Avoid clicking unknown links or attachments.
  • Basic online safety habits.
• Access vs. Privacy: School policies on password use to prevent data/work theft.
• Paranoid ABC:
  • Assume nothing.
  • Believe no one.
  • Check everything.

Next Steps

• Upcoming practical video covering theory and practical questions.
• Additional content based on student needs.