Exam N10-009 Topic 1 Question 81 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 81
Topic #: 1
In an environment with one router, which of the following will allow a network engineer to communicate between VLANs without purchasing additional hardware?

Suggested Answer: A Vote an answer

A subinterface is a logical interface created on a single physical router interface that allows routing between VLANs (known as Router-on-a-Stick (ROAS)). This method is commonly used when only one physical router is available, allowing inter-VLAN communication without additional hardware.
*Why not the other options?
*VXLAN (B) - This is used for extending Layer 2 networks over a Layer 3 infrastructure, primarily in data centers. It does not directly enable inter-VLAN communication.
*Layer 3 switch (C) - A Layer 3 switch can route between VLANs, but the scenario states that purchasing additional hardware is not an option.
*VIR (D) - This is not a standard networking term in the context of VLAN communication.

by Noel at Apr 27, 2025, 09:07 AM

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