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A free NetForge-AI account opens Module 1 — Network Fundamentals — end-to-end, plus the lab (3 devices) and ARIA AI (10 messages/day).

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Module 3·20% of the exam

Network Access — Switching, VLANs, STP, Wireless

Everything that happens at Layer 2 inside a building.

Walk through how a switch builds its MAC table, how 802.1Q tags carry many VLANs over a single trunk, why Spanning-Tree exists, how EtherChannel bundles links, and how 802.11 wireless fits into the wired LAN.

8 chapters3h reading20% weightPro module
ARIA· module 3 intro

Welcome to module 3. Everything that happens at Layer 2 inside a building. I'll meet you again at the top of every chapter — this module's worth roughly 20% of the exam, so don't rush it. Pick chapter 3.1 below to start.

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Create a free account to read Module 3: Network Access — Switching, VLANs, STP, Wireless

Anyone can browse the syllabus. To actually read chapter content, you'll need a free account — that opens Module 1: Network Fundamentals end-to-end, the lab, and ARIA. Modules 2–8 unlock with Pro.

  • Read every chapter in Module 1 — Network Fundamentals
  • Chat with ARIA AI — 10 messages a day
  • Use the lab with up to 3 devices
  • See the full course syllabus + chapter titles
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  1. 3.1

    Ethernet, MAC tables, and switching

  2. 3.2

    VLANs and access ports

  3. 3.3

    802.1Q trunking

  4. 3.4

    Inter-VLAN routing

  5. 3.5

    Spanning-Tree Protocol (STP & RSTP)

  6. 3.6

    EtherChannel — link aggregation

  7. 3.7

    Wireless LAN fundamentals

  8. 3.8

    CDP and LLDP — Layer 2 discovery

Module 2
IPv4 Addressing & Subnetting
Module 4
IP Connectivity — Routing
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A browser-native network lab and networking course, beginner to advanced. Free account opens Module 1 + a 3-device lab; Pro unlocks the rest.

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  • 2 · Addressing
  • 3 · Access (L2)
  • 4 · Connectivity
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