Computer Networks - Physical and Data Link Layer
A switch is configured with VLANs 10 and 20. Devices in VLAN 10 need to communicate with VLAN 20. Which device or method allows this communication?
A switch is configured with VLANs 10 and 20. Devices in VLAN 10 need to communicate with VLAN 20. Which device or method allows this communication?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand VLAN isolation
VLANs separate broadcast domains; devices in different VLANs cannot communicate directly.Step 2: Identify device enabling inter-VLAN communication
Routers or Layer 3 switches route traffic between VLANs; bridges and hubs do not.Final Answer:
Router or Layer 3 switch performing inter-VLAN routing -> Option BQuick Check:
Inter-VLAN communication requires routing = Router or Layer 3 switch performing inter-VLAN routing [OK]
Quick Trick: Use router or Layer 3 switch for inter-VLAN routing [OK]
Common Mistakes:
MISTAKES- Thinking bridges connect VLANs
- Assuming hubs can route traffic
- Confusing STP with routing
Master "Physical and Data Link Layer" in Computer Networks
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