200-301 Question 175
Single answerA network administrator is configuring a switch to support both data and voice traffic on a single port connected to an IP phone and a computer. The IP phone is connected directly to the switch and the computer is connected to the IP phone. Which configuration should be applied to the switch port to ensure proper functionality?
- A
Configure the port as an access port and assign it to the data VLAN only.
- B
Configure the port as an access port and assign it to both the data and voice VLANs.
- C
Configure the port as a trunk port to allow both data and voice traffic.
- D
Configure the port as an access port, assign it to the data VLAN, and specify a voice VLAN.
Show answer and explanation
Correct answer: D
Explanation
To support both data and voice traffic on a single port, the switch port must be configured as an access port and assigned to the data VLAN for computer traffic. Additionally, a voice VLAN must be specified to prioritize and separate voice traffic from data traffic. This configuration ensures the IP phone functions correctly while allowing the computer to communicate with the network.
- A. Incorrect.
This option does not allow voice traffic to be prioritized over data traffic, which is required for IP phones to function correctly.
- B. Incorrect.
An access port cannot be assigned to multiple VLANs simultaneously. Assigning both data and voice VLANs to the same port would cause misconfiguration.
- C. Incorrect.
While a trunk port can carry multiple VLANs, it is not required in this scenario since the switch port only needs to handle data and voice traffic for a single IP phone and computer.
- D. Correct.
This configuration ensures that the port is assigned to the data VLAN for regular network traffic and assigns a separate voice VLAN for IP phone traffic, allowing proper prioritization and separation of data and voice traffic.