Wired Networks (Ethernet)
Part of Wired & Wireless Networks · GCSE GCSE Computer Science revision
This key facts covers Wired Networks (Ethernet) within Wired & Wireless Networks for GCSE Computer Science. Revise Wired & Wireless Networks in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 3 of 10 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 10
Practice
15 questions
Recall
18 flashcards
Wired Networks (Ethernet)
What is Wired Networking?
Devices connect using physical cables - typically Ethernet cables (Cat5e, Cat6, Cat7). The cable plugs into the device's Ethernet port (RJ-45 connector).
How It Works:
- Ethernet cables: Twisted pair copper wires inside protective sheath
- Cable categories: Cat5e (1 Gbps), Cat6 (10 Gbps), Cat7 (10+ Gbps)
- Physical connection: Cable plugs into NIC's Ethernet port
- Switches: Connect multiple wired devices in a network
- Signal transmission: Electrical signals travel through copper wire
Wired Network Advantages:
- Very fast speeds: 1-10 Gbps typical (Gigabit Ethernet standard)
- Stable performance: Consistent speeds - no fluctuations
- Low latency: Minimal delay - crucial for gaming and real-time applications
- More secure: Must physically access cable to intercept data
- More reliable: No interference from walls, other devices, or weather
- Unlimited devices: No bandwidth sharing issues (switched connections)
- No signal degradation: Performance independent of distance (up to cable limits)
Wired Network Disadvantages:
- Limited mobility: Device tethered to cable - can't move around
- Installation effort: Cables must be run through walls, under floors
- Less convenient: Need physical connection point wherever you work
- Messy cabling: Lots of cables can look untidy
- Not suitable for mobile devices: Phones, tablets can't practically use cables
- Port limitations: Limited by number of physical ports on switch
Best Uses for Wired:
- Desktop computers: Don't move, need maximum speed
- Gaming PCs: Low latency crucial for competitive gaming
- Servers: Need reliable, fast, secure connections
- Security cameras: Reliable transmission of video feeds
- Smart TVs/Streaming: 4K/8K streaming needs high bandwidth
- Office workstations: Stationary computers prioritize performance
Keep building this topic
Read this section alongside the surrounding pages in Wired & Wireless Networks. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Wired & Wireless Networks
What does WAP stand for in networking?
Describe three disadvantages of using a wireless network connection compared to a wired connection.
Quick Recall Flashcards
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