Exam N10-008 topic 1 question 373 discussion

A. Subinterfaces Subinterfaces are often used in the context of virtual LANs (VLANs) to achieve network isolation on a single switch port. With subinterfaces, you can divide a physical interface into multiple logical interfaces, each associated with a different VLAN. This segmentation allows for separate traffic handling and isolation. In the case of connecting a desktop and a VoIP phone to the same switch port while keeping voice traffic segmented from non-voice traffic, configuring subinterfaces with VLANs is a common and effective approach. This enables the organization to achieve the required network isolation.

This wasn't on the dions

To configure multiple devices with network isolation on a single switch port, the organization can use subinterfaces. subinterfaces can be used to divide a single physical interface into multiple logical interfaces. The switch port connected to the VoIP phone can be configured with multiple subinterfaces, with each subinterface carrying traffic for a specific VLAN. The desktop and VoIP phone can then be configured to use the appropriate subinterface for their traffic.

can they just VLAN or 802.1q? What's so hard about that?

It stated "multiple devices with network iSOLATION(separated) on a single switch port". Therefore, its refering to Subinterfaces. Subinterfaces is a virtual interface that divides one physical interaface into multiple logical interface. Link Aggregation (802.3ad) - this is a combination of multiple pyhsical connection into one single connection Load Balancing - efficiently distribute incoming network traffic across a group of servers Tunneling - VPN

Why is this not Link Aggregation?