Fundamentals of Computer Networking

📋 Course Outline

1. Network media: wired and wireless types
2. Ethernet cabling: standards, abbreviations and limits
3. Copper data cable structure and CAT categories
4. Network topologies: availability, security and tradeoffs
5. Structured cabling: ISO/IEC levels and building components
6. Computer networks: definition, services and scope

📖 1. Network media: wired and wireless types

🔑 Key Concepts & Definitions

• Twisted-Pair Leitung : A wired network medium that uses multiple twisted copper wire pairs to carry electrical signals.
• Lichtwellenleiter : A wired network medium that transports data as light through fiber, carrying optical signals.
• WLAN / WiFi : A wireless network medium that transmits data over radio waves using WiFi standards.

📝 Essential Points

• Wired media carry electrical signals on copper (e.g., twisted-pair, coax) or optical signals in fiber (multimode or single-mode).
• Wireless media include radio links such as WLAN/WiFi and point-to-point radio (Richtfunk) for data transmission through the air.
• Fiber installation is typically more complex but offers strong interference resistance and very good transmission properties.

💡 Memory Hook

Copper = electricity; Fiber = light; WiFi = radio through the air.

📖 2. Ethernet cabling: standards, abbreviations and limits

🔑 Key Concepts & Definitions