NSE7_FSN_AR-7.6 Exam Dumps - Fortinet NSE 7 Network Security Architect Questions and Answers

The correct answer is A .

The study guide explicitly explains the diagnose debug rating table and says that for each server IP, the output shows “The round trip delay”

That means the RTT value represents the time it takes for FortiGate to send a request and receive the reply from that FortiGuard server.

The FortiOS administration guide also confirms this by stating:

“Each server is probed for Round Trip Time (RTT) every two minutes.”

Why the other options are wrong:

B is wrong because packet loss is shown separately by Curr Lost and Total Lost , while RTT is the round-trip delay

C is wrong because license-validation behavior is indicated by flags such as I = Initial , not by the RTT value itself

D is wrong because the documents do not say RTT starts at a fixed value of 10; it is measured dynamically as round-trip delay

So the verified answer is: A .

The correct answer is D .

The study guide shows the ipsmonitor test usage exactly:

1: Display IPS engine information

2: Toggle IPS engine enable/disable status

5: Toggle bypass status

99: Restart all IPS engines and monitor

So diagnose test application ipsmonitor 5 is used to toggle bypass status , which corresponds to enabling IPS bypass mode .

Why the other options are wrong:

A is wrong because disabling the IPS engine is option 2 , not 5.

B is wrong because the study guide does not define option 5 as IPS session information.

C is wrong because restarting all IPS engines and monitors is option 99 , not 5.

So the verified answer is: D .

The ADVPN shortcut negotiation begins after traffic from Spoke 1 to Spoke 2 initially travels through the hub. When the hub detects that both spokes can establish a more direct connection, the hub—not Spoke 1—sends the first control message: a shortcut offer to Spoke 1.

The SD-WAN 7.6 Enterprise Administrator Study Guide then states: “Spoke 1 acknowledges the shortcut offer by sending a shortcut query to the hub.” Therefore, the first message that Spoke 1 sends in response is the shortcut query , making option A correct.

The hub subsequently forwards that query to Spoke 2. Spoke 2 responds with a shortcut reply , which the hub forwards back to Spoke 1. After Spoke 1 receives the reply containing the necessary peer information, Spoke 1 and Spoke 2 begin IKE negotiation and establish the dynamic spoke-to-spoke shortcut tunnel. Consequently, the shortcut reply occurs later and originates from Spoke 2, while the offer originates from the hub. “Shortcut forward” describes the hub’s forwarding action rather than Spoke 1’s first response. This behavior is part of Fortinet’s ADVPN shortcut architecture .

The correct answer is B .

The study guide explicitly states: “IKE version 2 does not interoperate with IKE version 1, but they share enough of the header format that both versions can unambiguously operate over the same UDP port.”

That directly proves B .

Why the other options are wrong:

A is wrong because the study guide shows authentication methods as Asymmetric for IKEv2 and Symmetric for IKEv1

C is wrong because the study guide does not say they use the same TCP port; instead, it specifically says they can operate over the same UDP port

D is wrong because the study guide states: “IKEv2 does not use the concept of phase 1 or phase 2” , even though FortiOS CLI/GUI still uses those terms for configuration purposes

The correct answer is D .

The study guide explains that IKEv2 has two initial exchanges:

IKE_SA_INIT

IKE_AUTH

and then later exchanges such as:

CREATE_CHILD_SA

It also states the roles of those exchanges:

IKE_SA_INIT negotiates the security settings for IKE traffic

IKE_AUTH performs mutual authentication and sets up the piggyback child SA

CREATE_CHILD_SA creates a new child SA or rekeys an existing child SA

Most importantly, the study guide explicitly says:

“By IKEv2 design, no Diffie-Hellman public key is exchanged during an IKE_AUTH exchange. Consequently, any phase 2 Diffie-Hellman group configuration mismatch between FortiGate and the peer is experienced only during the first rekey (CREATE_CHILD_SA exchange) of the child SA created during IKE_AUTH.”

This proves the key idea behind the question: an IKEv2 tunnel can come up successfully first, then fail later during a CREATE_CHILD_SA rekey/renegotiation event because of a phase 2 mismatch. Among the provided options, the matching later-stage cause is mismatched quick-mode selectors during CREATE_CHILD_SA .

Why the other options are wrong:

A is wrong because if the proposal mismatch were in the initial negotiation path, the tunnel would fail during establishment, not after it was already up. The study guide places initial tunnel establishment in IKE_SA_INIT and IKE_AUTH

B is wrong because a mismatch in IKE_SA_INIT affects the initial establishment stage, not a tunnel that was already brought up successfully

C is wrong because a pre-shared key mismatch is part of authentication during IKE_AUTH , so the tunnel would not come up successfully in the first place

The correct answers are A and B .

The exhibit shows:

override: disable

both members are currently in-sync

only port7 appears under HBDEV stats , so it is the active heartbeat interface

the cluster is in HA A-P mode

Why A is correct:

With override disabled , after a failover the new primary keeps that role when the old primary comes back. The FortiOS administration guide states:

“When the primary FortiGate rejoins the cluster the secondary FortiGate continues to operate as the primary FortiGate.”

So if FGVM...649 reboots and FGVM...650 becomes primary, FGVM...650 will remain primary after FGVM...649 rejoins.

Why B is correct:

The study guide states:

“When FortiGate devices configured in an HA cluster lose communication with each other on the heartbeat interface, each FortiGate assumes the role of the primary device.”

The exhibit shows only port7 as the heartbeat device in HBDEV stats

So if port7 is disconnected and heartbeat communication is lost, the cluster can enter a split-brain condition, where both units believe they are primary. The FortiOS administration guide confirms the same behavior: loss of heartbeat communication causes each member to think it is the primary

Why the other options are wrong:

C is wrong because configuration synchronization status is specifically used to detect whether secondary members remain synchronized with the primary. If members are no longer synchronized, the status changes from in-sync to out-of-sync

D is wrong because the study guide explains that during a configuration change, checksums may differ briefly while changes are copied, but it does not describe this as the secondary initiating a “synchronization reset”

So the verified answers are: A, B .

The study guide identifies this exact output as an expectation session created by the FTP session helper :

“run helper-ftp” indicates the FTP helper is in use.

“FortiGate created an expectation session and opened the pinhole port for the expected return traffic”

It also explains why this exists:

“Another important function of the session helper is to temporarily create an expected session (or pinhole) for the data channel connection that comes from the server.”

“The session helper automatically creates the session and opens the door for the incoming connection.”

“These incoming TCP sessions use random TCP port numbers.”

That directly proves C is correct.

For A , the exhibit shows expire=23. The study guide explains the expire field as the length of time until the session expires if no matching traffic arrives, and the FortiOS guide states for expectation sessions:

“Expectation sessions usually have a timeout value of 30 seconds. If the communication from the server is not initiated within 30 seconds the expectation session times out and traffic will be denied.”

So with expire=23, FortiGate will allow that expected traffic only for the remaining 23 seconds; after that, it times out and the traffic is denied. That makes A correct.

Why the other options are wrong:

B is not supported . The study guide describes expectation sessions as being created by the session helper from the control-session negotiation, not as independent objects unaffected by the master session.

D is wrong as stated. Even though the output contains policy_id=25, the study guide explicitly says the incoming expected connection is allowed by the expected session itself, “even when no firewall policy allows it.”

To solve this high CPU usage scenario involving the ipsengine, we must understand the specific functions of the diagnose test application ipsmonitor commands shown in the troubleshooting steps.

Analyze the Situation:

Exhibit: The diagnose sys top output shows the ipsengine process is in a run state (R) consuming 99% CPU.

Previous Action: The administrator already ran diagnose test application ipsmonitor 5.

Result: The CPU usage did not drop.

Understand the Commands:

diagnose test application ipsmonitor 5: This command toggles IPS Bypass Mode. When enabled, the IPS engine lets traffic pass through without inspection.

Implication: If the CPU was high due to traffic volume, enabling bypass would drop the CPU load immediately.

Failure: Since the CPU remained at 99% after bypass, the ipsengine process is likely frozen, stuck, or in an internal infinite loop unrelated to the current traffic flow. The process itself is the problem, not the traffic volume.

Evaluate the Solution (Option B):

diagnose test application ipsmonitor 2: This command toggles the IPS engine ' s Enable/Disable status.

Because the engine is stuck (bypass failed to relieve pressure), the " Immediate action " required is to stop or restart the process entirely.

Running option 2 effectively disables/kills the stuck IPS engine instance, which will immediately drop the CPU usage to near zero. (It can then be toggled again to restart it).

Why other options are incorrect:

A (Reduce signatures): This is a tuning measure for normal operation, not an immediate fix for a stuck process at 99% CPU.

C (Disable IPS on policies): This is a configuration change that takes time and requires a commit; it is not the most immediate diagnostic tool available.

D (Bypass all IPS engines): This describes the action of command 5 (Bypass), which the prompt explicitly states was already performed and failed.