What happens when a routed VLAN interface (RVI) is configured on a FortiSwitch port or trunk? (Choose one answer)
Answer(s): B
According to theFortiSwitchOS 7.6 Administration Guideand theFortiSwitch 7.6.1 AdministrationGuide--Standalone Mode, aRouted VLAN Interface (RVI)is a physical port or trunk interface that is converted to support Layer 3 routing protocols.2This transformation changes the fundamental nature of the interface from a switching component to a routing component.When an RVI is enabled on a specific physical port or trunk, the system automatically assignsVLAN 4095to that interface at the backend.3This specific VLAN ID is reserved across the FortiSwitch platform to signal that the interface is no longer operating as a standard Layer 2 switch port.4Once configured as an RVI, the interface supports advanced Layer 3 features such asOSPF, BGP, RIP, IS-IS, and static routing, as well asVirtual Routing and Forwarding (VRF)for routing isolation.5Importantly, the documentation states that upon enabling RVI,Layer 2 protocols(such as Spanning Tree Protocol or 802.1X port-based security) and most standard switch interface features aredisabledon that port.6This is because the port is now treated as a dedicated Layer 3 "routed" interface rather than a member of the Layer 2 switching fabric.7Additionally, if the underlying physical port or trunk interface is administratively shut down, the associated RVI will also transition to a "down" state.
Exhibit.The exhibit shows the current status of the ports on the managed FortiSwitch.Access-1.Why would FortiGate display a serial number in the Native VLAN column associated with the port23 entry?
Answer(s): C
The appearance of a serial number in the Native VLAN column for port23 suggests that the switch connected to this port is identified uniquely in the network.Given the options provided:A standalone switch with the shown serial number is connected on port23 (Option C): This is the most plausible explanation. The FortiSwitch configuration interface is displaying the serial number of a standalone switch that is directly connected to port23. This kind of display helps in identifying and managing individual devices in a network setup, especially in environments with multiple switches.
Refer to the exhibit.You just connected three FortiSwitch devices:Core-1,Core-2, andAccess-1. Core-1 and Core-2 both connect to Access-1 for redundancy. All switches are managed by FortiGate, which uses port4 as the FortiLink interface. After you enable the uplink ports on Core-2, you notice that port3 on Access-1 enters the Discarding STP state. What is the most likely cause of this behavior? (Choose one answer)
According to theFortiSwitchOS 7.6 Administration Guideand theFortiLink 7.6 Study Guide, the Spanning Tree Protocol (STP) is automatically enabled on managed FortiSwitches to ensure a loop- free Layer 2 topology within the FortiLink fabric. When multiple physical paths exist between switches (as shown in the redundant connections between the Core and Access tiers), STP must block one of the paths to prevent a broadcast storm.The behavior described in the exhibit--whereport3 on Access-1enters aDiscarding state--is a result of the STP election process. In a standard STP environment, switches elect aRoot Bridgebased on the lowestBridge Priority(or lowest MAC address as a tie-breaker). Once a root is established, other switches identify the "best" path to that root (the Root Port) and block all other redundant paths.The provided exhibit shows that Access-1 has two paths to the core: one to Core-1 and one to Core-2. The fact that the path to Core-2 is discarded suggests that the STP topology was recalculated when Core-2 was enabled. In the context of Fortinet technical exams for this specific scenario,Option C (Core-2 has the lowest bridge priority)is the standard answer identifying that Core-2's priority settings influenced the STP tree such that Access-1's link to it was determined to be the redundant (alternate) path.If the switches were configured withMCLAG (Multi-Chassis Link Aggregation), both physical links would be treated as a single logical trunk, and neither would be in a discarding state. However, without MCLAG, the system relies on bridge priorities to prune the loop.BPDU Guard (Option A)is incorrect because it would administratively shut down the port rather than placing it in an STP "Discarding" state.Option Bis incorrect as the switch would not appear in the managed topology if unauthorized.
Exhibit.port1 and port2 are the only ports configured with the same native VLAN 10.What are two reasons that can trigger port1 to shut down? (Choose two.)
Answer(s): A,D
Exhibit.What conditions does a FortiSwitch need to have to successfully configure the options shown in the exhibit above? (Choose two.)
Answer(s): B,C
Regarding the configuration of a FortiSwitch to split a port into multiple smaller interfaces:The CLI commands are enabling a split port into four 10Gbps interfaces (Option B): The command shown in the exhibit is typically used to configure a high-speed port (like a 40Gbps or 100Gbps interface) to be divided into smaller, independent 10Gbps interfaces. This feature allows more flexible use of the switch's physical resources.The port full speed prior to the split was 100G SFP+ (Option C): Given the context of splitting the port into multiple 10Gbps interfaces, the original port configuration likely supported a high-speed transceiver such as 100G SFP+. This would make it technically feasible to divide the interface into multiple 10Gbps channels, enhancing connectivity options without requiring additional physical interfaces.These configurations and capabilities are typical in modern network setups, especially in environments requiring high density and flexibility in connectivity, allowing network administrators to optimize physical infrastructure efficiently.
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