Exam FCP_FGT_AD-7.4 Topic 1 Question 190 Discussion

Actual exam question for Fortinet's FCP_FGT_AD-7.4 exam
Question #: 190
Topic #: 1
FortiGate is operating in NAT mode and is configured with two virtual LAN (VLAN) subinterfaces added to the same physical interface.
In this scenario, what are two requirements for the VLAN ID? (Choose two.)

Suggested Answer: B,C Vote an answer

B: The two VLAN subinterfaces can have the same VLAN ID, only if they belong to different VDOMs.
C: The two VLAN subinterfaces must have different VLAN IDs.
https://community.fortinet.com/t5/FortiGate/Technical-Note-How-to-use-emac-vlan-to-share-the-same-VL AN/ta-p/192843?externalID=FD43883 Each interface (physical or VLAN) can belong to only one VDOM.
Meaning that sub-interfaces (VLANs) from the same physical interface can have the same VLAN ID as long as they are not assign to the same VDOM.
VLAN
https://community.fortinet.com/t5/FortiGate/Technical-Tip-rules-about-VLAN-configuration-and-VDOM- interface/ta-p/197640
* VLANs can be created on any physical or aggregate (802.3ad) interfaces
- The same VLAN number cannot be configured twice on the same physical interface
- The same VLAN number can be used on different physical interfaces
- The usable VLAN ID range is from 1 to 4094
* VDOM interface assignment
- Two VDOMs cannot share the same interface or VLAN
- A VLAN sub-interface can belong to a different VDOM than the physical interface it is attached to.

by Quintina at Aug 26, 2024, 06:37 PM

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