Cybersecurity - Security Architecture and Design
Consider a network divided into three VLANs: VLAN 10, VLAN 20, and VLAN 30. If a device in VLAN 10 tries to communicate with a device in VLAN 30 without routing, what will happen?
Consider a network divided into three VLANs: VLAN 10, VLAN 20, and VLAN 30. If a device in VLAN 10 tries to communicate with a device in VLAN 30 without routing, what will happen?
medium📝 Analysis Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand VLAN isolation
VLANs separate network traffic logically, so devices in different VLANs cannot communicate directly without routing.Step 2: Analyze communication attempt
Since no routing is mentioned, devices in VLAN 10 and VLAN 30 cannot communicate.Final Answer:
The communication will fail because VLANs isolate traffic -> Option AQuick Check:
VLAN isolation blocks cross-VLAN communication without routing [OK]
Quick Trick: No routing means VLANs block communication [OK]
Common Mistakes:
MISTAKES- Assuming VLANs allow free communication
- Thinking VLANs merge automatically
- Believing firewalls block all VLAN traffic by default
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