200-301 Question 1
Single answerA company is deploying a new network and wants to ensure that devices within the same VLAN can communicate with each other but cannot communicate with devices in a different VLAN without explicit configuration. Which network component is responsible for enabling communication between different VLANs?
- A
Router
- B
Switch
- C
Access Point
- D
Firewall
Show answer and explanation
Correct answer: A
Explanation
In a network with VLANs, devices within the same VLAN can communicate directly using a switch. However, communication between VLANs requires a Layer 3 device such as a router or a Layer 3 switch to perform inter-VLAN routing. This allows traffic to be routed between different VLANs while maintaining segmentation and control.
- A. Correct.
Correct. A router (or a Layer 3 switch) is required to enable communication between different VLANs by performing inter-VLAN routing.
- B. Incorrect.
Incorrect. A switch operates at Layer 2 and is responsible for forwarding frames within the same VLAN. It cannot route traffic between VLANs.
- C. Incorrect.
Incorrect. An access point provides wireless connectivity to devices and does not perform inter-VLAN communication.
- D. Incorrect.
Incorrect. A firewall is used to enforce security policies and control traffic flow but does not handle VLAN routing.