Which command configuration is valid for associating a VLAN with an interface on EX Series switches?

The correct answer is the option that involves associating a VLAN with a specific port using "vlan members." This command is used in Juniper EX Series switches for configuring an access port to be part of a specific VLAN. When you want a port to belong to a VLAN, you use the "vlan members" command in the interface configuration mode. This effectively tells the switch that any traffic coming into or going out of that port should be tagged with the specified VLAN.

Using "vlan members" is fundamental because it directly establishes the relationship between the VLAN and the interface, ensuring that traffic is correctly directed according to the VLAN membership. This approach is necessary for both segregating network traffic and managing broadcast domains effectively within your network.

The other options presented either do not correctly relate to VLAN configuration or serve different purposes altogether. For example, assigning a VLAN ID of 0 does not help with VLAN association, as VLAN 0 is typically reserved for priority tagging in 802.1Q. Similarly, using "native-vlan-id" does not directly associate a VLAN with a port; instead, it specifies the VLAN that will carry untagged traffic on trunk ports. Setting the port mode to hybrid is also a higher-level concept related to trunk