Which command modifies the VLAN membership of a switched port?

• A. set interfaces ge-0/1/1.0 family ethernet-switching vlan members
• B. modify vlan interface ge-0/1/1.0
• C. change vlan members ge-0/1/1.0
• D. update interfaces vlan members ge-0/1/1.0

Answer: (A)

The command that effectively modifies the VLAN membership of a switched port is correctly identified as setting the VLAN for a specific interface using the syntax designed for this purpose. The command specifies the interface (ge-0/1/1.0), states that it belongs to the Ethernet switching family, and then includes the specific VLANs to which the interface should belong. This structure ensures that the port is configured to participate in the specified VLANs, which is essential for proper traffic management on the network.

This command aligns with the standard Junos OS command set for configuring VLANs on Ethernet interfaces. By indicating the family and defining the VLAN members, you are explicitly managing how network traffic flows through that port, ensuring it operates within the correct broadcast domain.

The other choices do not conform to the correct command structure used in Junos OS for modifying VLAN memberships. They either use incorrect keywords or lack the necessary specificity that the correct command provides, which is crucial for the successful configuration of VLANs on switched interfaces.