nerdexam
Fortinet

NSE4 · Question #409

Which of the following statements are correct concerning layer 2 broadcast domains in transparent mode VDOMs?(Choose two)

The correct answer is B. Each VLAN is a separate broadcast domain. C. Interfaces configured with the same VLAN ID can belong to different broadcast domains.. In transparent mode VDOMs, each VLAN creates a separate Layer 2 broadcast domain, and interfaces configured with the same VLAN ID in different transparent VDOMs will belong to distinct broadcast domains.

Submitted by lars.no· Apr 18, 2026FortiGate Deployment and System Configuration

Question

Which of the following statements are correct concerning layer 2 broadcast domains in transparent mode VDOMs?(Choose two)

Options

  • AThe whole VDOM is a single broadcast domain even when multiple VLAN are used.
  • BEach VLAN is a separate broadcast domain.
  • CInterfaces configured with the same VLAN ID can belong to different broadcast domains.
  • DAll the interfaces in the same broadcast domain must use the same VLAN ID.

How the community answered

(14 responses)
  • A
    21% (3)
  • B
    71% (10)
  • D
    7% (1)

Why each option

In transparent mode VDOMs, each VLAN creates a separate Layer 2 broadcast domain, and interfaces configured with the same VLAN ID in different transparent VDOMs will belong to distinct broadcast domains.

AThe whole VDOM is a single broadcast domain even when multiple VLAN are used.

The entire VDOM is not a single broadcast domain; VLANs, when configured, segment it into multiple broadcast domains.

BEach VLAN is a separate broadcast domain.Correct

In a transparent mode VDOM, VLANs function to segment the network into separate broadcast domains, ensuring distinct Layer 2 traffic isolation.

CInterfaces configured with the same VLAN ID can belong to different broadcast domains.Correct

Because each transparent VDOM acts as an independent Layer 2 bridge, interfaces configured with the same VLAN ID in separate VDOMs will reside in different Layer 2 broadcast domains.

DAll the interfaces in the same broadcast domain must use the same VLAN ID.

While interfaces within the *same* broadcast domain typically share a VLAN ID, interfaces with the same VLAN ID can belong to *different* broadcast domains if they are configured in separate transparent VDOMs.

Concept tested: Transparent VDOM Layer 2 broadcast domains and VLANs

Source: https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/708461/vdom-modes

Topics

#VLANs#Broadcast Domains#Transparent Mode#VDOMs

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full NSE4 Practice