100-150 Question 145
Single answerA company is expanding its network infrastructure and has deployed multiple switches and routers across its campus. The network team needs to ensure that devices from different VLANs can communicate with each other. Which networking device is required to achieve this?
- A
Hub
- B
Router
- C
Switch
- D
Access Point
Show answer and explanation
Correct answer: B
Explanation
To allow communication between devices on different VLANs, you need a Layer 3 device such as a router. Routers are specifically designed to route traffic between different networks, including VLANs, by analyzing IP addresses at Layer 3.
- A. Incorrect.
Hubs operate at Layer 1 (Physical Layer) and cannot facilitate communication between VLANs. They simply broadcast data to all connected devices.
- B. Correct.
Routers operate at Layer 3 (Network Layer) and are designed to facilitate communication between different VLANs or subnets.
- C. Incorrect.
Switches operate at Layer 2 (Data Link Layer) and are used to create VLANs, but they cannot route traffic between VLANs without additional functionality (e.g., Layer 3 switches).
- D. Incorrect.
Access Points are used to provide wireless connectivity to devices and do not facilitate inter-VLAN routing.