A network technician plugs a newly deployed workstation into switch port GigabitEthernet0/12. The host successfully obtains an IP address in the default management network (192.168.1.0/24) and can reach local hosts in that same network, but it is unable to access any resources on the Finance subnet (192.168.30.0/24). An inspection reveals that the switch port is still using its factory default configuration. Which of the following is the most likely cause of this connectivity issue?
- The switch port is assigned to the default VLAN 1 rather than the designated Finance VLAN.Answer
- BHosts residing on the same VLAN require an intermediate Layer 3 device to communicate with each other.
- CAn 802.1Q native VLAN mismatch exists between the workstation's network card and the access switch port.
- DThe switch port has auto-negotiated a full-duplex mismatch with the connected workstation interface.
Answer
The switch port is assigned to the default VLAN 1 rather than the designated Finance VLAN.
When a managed switch port remains in its default factory configuration, it is assigned to VLAN 1 (the default VLAN). As a result, any host connected to that port will reside in the VLAN 1 broadcast domain rather than the intended VLAN (such as VLAN 30 for Finance). To resolve the issue, the administrator must configure the interface as an access port and assign it to VLAN 30.
Step-by-Step Solution
Key Concept
Default Access Port VLAN Assignment