NSE 7 – LAN Edge 7.0 — Question 18

An administrator is testing the connectivity for a new VLAN. The devices in the VLAN are connected to a FortiSwitch device that is managed by FortiGate. Quarantine is disabled on FortiGate.
While testing, the administrator noticed that devices can ping FortiGate and FortiGate can ping the devices. The administrator also noticed that inter-VLAN communication works. However, intra-VLAN communication does not work.
Which scenario is likely to cause this issue?

Answer options

• A. The native VLAN configured on the ports is incorrect.
• B. The FortiSwitch MAC address table is missing entries.
• C. The FortiGate ARP table is missing entries.
• D. Access VLAN is enabled on the VLAN.

Correct answer: D

Explanation

The correct answer is D because if the Access VLAN is enabled, it may prevent proper intra-VLAN communication. The other options are less likely causes since they pertain to connectivity issues that would generally affect inter-VLAN communication rather than intra-VLAN communication.