How do you separate voice and data traffic on a single network switch? Learn how VLANs enable secure and efficient traffic segmentation for Cisco IP phones and computers—essential knowledge for the Cisco Certified Field Technician (CCT) exam.
Table of Contents
Question
What technology is used to separate voice and data traffic on the same network switch?
A. STP
B. EtherChannel
C. VLANs
D. CDP
E. HSRP
Answer
C. VLANs
Explanation
VLANs (Virtual Local Area Networks) allow the separation of voice and data traffic to improve network performance and security.
VLANs (Virtual Local Area Networks) are used to separate voice and data traffic on the same network switch. This is a standard and widely adopted practice in Cisco networks.
- VLANs allow a single physical switch port to carry both voice and data traffic by assigning each type of traffic to a different VLAN—typically, one for data (such as VLAN 10) and one for voice (such as VLAN 20).
- The switch port is configured with an access VLAN for data devices (like PCs) and a voice VLAN for IP phones, using commands such as switchport access vlan [data VLAN] and switchport voice vlan [voice VLAN].
- This logical separation enhances security, simplifies network management, and enables features like Quality of Service (QoS) to prioritize voice traffic over data.
- Modern switches and IP phones support this configuration, allowing both devices to connect through a single cable and port while keeping their traffic isolated and properly managed.
VLANs provide the logical separation of voice and data traffic on the same switch, ensuring efficient, secure, and high-quality network operations for both types of communication.
Cisco Certified Field Technician (CCT) certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Field Technician (CCT) exam and earn Cisco Certified Field Technician (CCT) certification.