NSE5_FSW_AD-7.6最新考證 - NSE5_FSW_AD-7.6考古題介紹

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Fortinet NSE5_FSW_AD-7.6 考試大綱：

主題簡介
主題 1
  • FortiSwitch concepts: This domain covers core FortiSwitch features including VLAN configuration, QoS, LLDP-MED, stacking, switching and routing, STP for loop prevention, and port and transceiver configuration. It focuses on essential switching operations and network integration.
主題 2
  • Monitoring and troubleshooting: This domain covers packet capture methods, FortiLink troubleshooting, and diagnostic tools used to monitor traffic and resolve network issues.
主題 3
  • Deployment and management: This domain includes provisioning and deploying FortiSwitch in supported topologies, including multi-tenancy environments. It emphasizes proper setup, scalability, and centralized management.
主題 4
  • Layer 2 control and security: This section focuses on Layer 2 security features such as port security, filtering, antispoofing, ACLs, security profiles, and VLAN security mechanisms to protect switched networks.

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最新的 Fortinet Network Security Expert NSE5_FSW_AD-7.6 免費考試真題 (Q78-Q83):

問題 #78
Refer to the exhibits.

All three FortiSwitch-connected ports are configured in VLAN 10. FortiGate acts as the Dynamic Host Configuration Protocol (DHCP) server and is connected to a DHCP snooping trusted trunk port. PC1 and PC2 are connected to ports configured as untrusted for Dynamic ARP Inspection (DAI), and no static bindings are configured in the IP source guard (IPSG) database. PC2 is compromised and attempts to spoof the FortiGate IP address by sending forged Address Resolution Protocol (ARP) replies with its own MAC address. What will FortiSwitch do with the ARP packets from PC2? (Choose one answer)

答案：A

解題說明：
According to theFortiSwitchOS 7.6 Administration Guideand theFortiSwitch 7.6 Study Guide, Dynamic ARP Inspection (DAI) is a security feature used to intercept, log, and discard ARP packets with invalid IP-to- MAC address bindings. DAI is primarily used to prevent "Man-in-the-Middle" attacks, such as ARP spoofing or ARP cache poisoning.
In this scenario, DAI is active on VLAN 10. When DAI is enabled, the FortiSwitch intercepts all ARP packets on untrusted ports and validates them against a trusted source-most commonly theDHCP snooping database
. As shown in the "DHCP Snooping database" exhibit, PC2 is correctly mapped to IP 10.0.10.30 and MAC 00:
09:0F:AB:00:0B.
When PC2 attempts to send a forged ARP reply claiming that IP 10.0.10.254 (the FortiGate's IP) is located at its own MAC address (00:09:0F:AB:00:0B), the FortiSwitch's DAI engine inspects the packet. It checks the DHCP snooping database for a binding that matches IP 10.0.10.254 to MAC 00:09:0F:AB:00:0B. Finding no such valid entry (because the database correctly identifies the MAC 00:09:0F:AB:00:0B as belonging to IP
10.0.10.30), the switch identifies the ARP packet as illegitimate.
Consequently, the FortiSwitch willdrop the ARP repliesbecause they fail the DAI validation check against the established DHCP snooping bindings. Option A is incorrect as DAI functions independently of IPSG once the database is populated. Option B is incorrect because "accepting" the spoofed packet is the opposite of DAI's purpose. Option C is incorrect because DAI is specifically designed to run on untrusted ports to protect the network from client-side attacks.


問題 #79
In which two ways can you assign a FortiSwitch port to a VDOM using multi-tenancy setup? (Choose two.)

答案：B,D

解題說明：
In a multi-tenancy setup on FortiGate, you can assign a FortiSwitch port to a VDOM in two primary ways:
* Switch the FortiLink Interface to the Target VDOM (A): This method involves configuring the FortiLink interface, which is the dedicated interface used to manage FortiSwitch units from FortiGate, to operate within a specific VDOM. This effectively assigns all ports on the FortiSwitch, managed through that FortiLink interface, to the designated VDOM.
* Create a Virtual Port Pool on the FortiGate CLI (C): Virtual port pools are created on FortiGate and allow ports from FortiSwitch to be grouped and assigned to a VDOM. This method is more granular and flexible, as it allows specific ports on the FortiSwitch to be dedicated to different VDOMs without requiring the entire switch or FortiLink interface to be dedicated to a single VDOM.


問題 #80
Refer to the diagnostic output:

Two entries in the exhibit show that the same MAC address has been used in two different VLANs. Which MAC address is shown in the above output?

答案：D

解題說明：
The MAC address "00:50:56:96:e3:fc" appearing in two different VLANs (4089 and 4094) in the diagnostic output indicates it is a MAC address associated with a device that supports traffic from multiple VLANs.
Such a behavior is typical of network infrastructure devices like switches or routers, which are configured to allow traffic from various VLANs to pass through a single physical or logical interface. This is essential in network designs that utilize VLANs to segregate network traffic for different departments or use cases while using the same physical infrastructure.
References:
For more detailed information on MAC table diagnostics and VLAN configurations in FortiGate devices, refer to the official Fortinet documentation:Fortinet Product Documentation.


問題 #81
Refer to the exhibit.

and an OSPF route with destination 0.0.0.0/0 [110/10]. The OSPF route is marked with a checkmark in the FIB column, while the Static route has a dash.] The routing monitor displays multiple route entries, but only some are installed in the forwarding information base (FIB). After analyzing the two route entries with the destination 0.0.0.0/0, which statement correctly describe why one of these routes is not installed in the FIB? (Choose one answer)

答案：A

解題說明：
According to theFortiSwitchOS 7.6 Administration Guideand theFortiSwitch 7.6 Study Guide, the Routing Information Base (RIB) contains all potential routes discovered by the switch, but theForwarding Information Base (FIB)only includes the "best" active routes used for hardware packet forwarding. When the routing process receives multiple paths to the exact same destination (in this case, the default route 0.0.0.0
/0), it must select the most reliable source based on a specific hierarchy.
The primary tie-breaker for routes from different protocols is theAdministrative Distance (AD). AD is a value from 1 to 255 that represents the trustworthiness of the routing source, where alower value is more preferred. In the provided exhibit:
* TheOSPFroute has an AD of110(shown as [110/10]).
* TheStaticroute has been configured with an AD of220(shown as [220/0]).
Because the OSPF route's AD (110) is lower than the Static route's AD (220), the system considers the OSPF route to be superior. Consequently, only the OSPF route is "Selected" and installed into theFIB. The static route remains in the RIB as a "backup" or floating static route; it will only be moved to the FIB if the preferred OSPF route becomes unavailable. Option D is incorrect because having identical prefixes is not a
"conflict" but a standard part of route selection where AD decides the winner. Option A is incorrect because metric is only compared if the AD is identical.


問題 #82
(Full question statement start from here)
Refer to the exhibit.

You run the command diagnose switch-controller switch-info loopguard access-1 and see that theMAC-Move column displays a value of0forport1.
What does this indicate? (Choose one answer)

答案：D

解題說明：
In FortiSwitchOS 7.6,Loop Guardis a Layer 2 loop detection mechanism primarily designed to protect access ports from unintended network loops. In itsoriginal implementation, Loop Guard only detected loops on the native VLAN, which limited its effectiveness in environments using multiple tagged VLANs. To address this limitation, Fortinet enhanced Loop Guard by introducing theMAC move detection feature, as documented in the FortiSwitchOS 7.6 Administrator Guide.
TheMAC move optioninstructs the FortiSwitch to monitor for repeated MAC address flapping events across ports or VLANs. Such MAC movement is a strong indicator of a Layer 2 loop. However, this enhanced detection mechanism isdisabled by defaultand must be explicitly enabled by configuring aMAC move threshold greater than zero.
According to the FortiSwitchOS 7.6 Administrator Guide (page 164), enabling MAC move allows Loop Guard to detect loops beyond the native VLAN. Furthermore, the guide explicitly states (page 166) thata MAC-Move value of 0 indicates that the MAC move feature is not enabled. This means the switch is not monitoring MAC address movement as part of its loop detection logic, even though Loop Guard itself may still be enabled on the port.
Therefore, a MAC-Move value of 0 does not indicate that Loop Guard is disabled or inactive, nor does it imply VLAN-wide port shutdown behavior. It strictly confirms thatMAC move detection has not been enabled, makingOption Cthe correct and fully verified answer based on FortiSwitchOS 7.6 documentation.


問題 #83
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