200-301 Question #803: Real Exam Question with Answer & Explanation

The correct answer is C: Layer 3 switch. In a traditional "Router-on-a-Stick" configuration, a router uses subinterfaces to route traffic between different VLANs. Each subinterface acts as the default gateway for a specific VLAN. However, a Layer 3 switch (also known as a Multilayer Switch) can perform this same inter-V

Submitted by ahmad_uae· Mar 5, 2026DOMAIN_LIST_MISSING_IN_PROMPT

Question

Which type of device can be replaced by the use of subinterfaces for VLAN routing?

Options

ALayer 2 bridge
BLayer 2 switch
CLayer 3 switch
Drouter

Explanation

In a traditional "Router-on-a-Stick" configuration, a router uses subinterfaces to route traffic between different VLANs. Each subinterface acts as the default gateway for a specific VLAN. However, a Layer 3 switch (also known as a Multilayer Switch) can perform this same inter-VLAN routing internally using SVIs (Switch Virtual Interfaces). When you upgrade to a Layer 3 switch, you no longer need the external router and its subinterfaces to move traffic between VLANs.

Topics

#VLAN routing#subinterfaces#router-on-a-stick#Layer 3 switching

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