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NEW QUESTION # 56
Refer to the exhibit.
The output of the command diagnose vpn tunnel list is shown.
Reviewing the debug command, what is the current status of the traffic flowing through the tunnel?
Answer: A
Explanation:
The correct answer is D. The inbound IPsec SA was copied to the NPU.
The exhibit shows:
npu_flag=02
dec_npuid=1
enc_npuid=0
The study guide gives the exact meaning of the npu_flag field:
npu_flag=00 = Both IPsec SAs loaded to the kernel
npu_flag=01 = Outbound IPsec SA copied to NPU
npu_flag=02 = Inbound IPsec SA copied to NPU
npu_flag=03 = Both outbound and inbound IPsec SAs copied to NPU
It also explains: "If the first IPsec packet is inbound and can be offloaded, the inbound SA is copied to the NPU and the npu_flag changes to 02. After both SAs are copied to the NPU, the npu_flag changes to 03." So with npu_flag=02, only the inbound SA has been copied to the NPU. That makes D correct.
Why the other options are wrong:
A is wrong because outbound-only offload would be npu_flag=01, not 02
C is wrong because both directions offloaded would be npu_flag=03, not 02 B is wrong because dec_npuid=1 identifies the NPU ID used for decryption, but it does not state that the processor is specifically NP6. The study guide only maps the offload state through the npu_flag values in this context, not the NPU model from this field alone So the verified answer is: D.
NEW QUESTION # 57
Exhibit.
Refer to the exhibit, which contains a screenshot of some phase 1 settings.
The VPN is not up. To diagnose the issue, the administrator enters the following CLI commands on an SSH session on FortiGate:
However, the IKE real-time debug does not show any output. Why?
Answer: B
NEW QUESTION # 58
Refer to the exhibit, which shows the output of a debug command.
Which two statements about the output are true? (Choose two.)
Answer: C,D
Explanation:
References:
FortiOS Admin Guide: OSPF, Debug Outputs
NEW QUESTION # 59
Refer to the exhibit.
Partial output of a real-time OSPF debug is shown.
Which two reasons explain why the two FortiGate devices are unable to form an adjacency? (Choose two.)
Answer: A,D
Explanation:
To determine the correct reasons for the adjacency failure, we must analyze the standard OSPF real-time debug output (diagnose ip router ospf all enable or diagnose sniffer packet) typically provided in this exam exhibit.
Analyze the Debug Output:
The debug output in this specific question scenario typically displays an incoming Hello packet line: OSPF: RECV[Hello]: ... auth-type 0 ...
"RECV": Indicates the packet is coming from the Remote peer.
"auth-type 0": Indicates the Remote peer is sending "Null" (No) authentication.
Analyze the Failure:
The adjacency fails because the Local FortiGate is rejecting this packet.
If the Local FortiGate accepts "No Authentication", it would match auth-type 0 and form the adjacency.
Since it is failing (and producing a debug log), the Local FortiGate must be expecting a different authentication type (Type 1 Cleartext or Type 2 MD5).
Evaluate the Options:
A . The remote peer has either OSPF cleartext or MD5 authentication configured.
Incorrect. The debug shows auth-type 0 (No Auth) coming from the remote peer.
B . There is an OSPF authentication configuration mismatch.
Correct. One side is sending "No Auth" (Remote), and the other expects "Auth" (Local). This is a definition of a mismatch.
C . The local FortiGate does not have OSPF authentication configured.
Incorrect. If the Local unit had "No Auth" configured, it would match the Remote's auth-type 0, and the adjacency would come up. The failure implies the Local unit does have auth configured.
D . The local FortiGate has either OSPF cleartext or MD5 authentication configured.
Correct. Because the Local unit is rejecting the "No Auth" packet from the remote peer, it confirms that the Local unit has authentication enabled (expecting Type 1 or 2).
Conclusion: The breakdown of the OSPF negotiation shows that the Remote peer is sending no authentication (Type 0), while the Local FortiGate expects authentication, resulting in a mismatch.
Reference:
FortiGate Security 7.6 Study Guide (OSPF Troubleshooting): "Authentication mismatch is a common cause of OSPF adjacency failure. Debug commands (diagnose ip router ospf all enable) reveal the auth-type received versus expected." FortiGate CLI Reference: auth-type 0 = Null (None), auth-type 1 = Simple (Cleartext), auth-type 2 = MD5.
NEW QUESTION # 60
When FortiGate enters conserve mode because of memory pressure, which action can FortiGate perform to preserve memory?
Answer: D
Explanation:
When the FortiGate enters Conserve Mode due to high memory pressure (specifically reaching the Extreme Threshold at 95% memory usage, or the Red Threshold for proxy traffic), the system prioritizes stability and preventing a system crash (kernel panic).
D). FortiGate begins dropping all new sessions to protect resources:
In Extreme Conserve Mode (95%), the FortiGate kernel acts to preserve the remaining memory for system- critical tasks (like admin access and basic packet forwarding of existing sessions). To achieve this, it drops all new session initiation requests regardless of the inspection type.
In Red Conserve Mode (88%), it specifically drops new sessions that require proxy-based inspection (as these consume the most memory), while often still allowing flow-based traffic.
Among the provided choices, "dropping new sessions" is the only standard protective mechanism FortiOS employs to stop memory usage from climbing further.
Why other options are incorrect:
A: FortiGate does not automatically reboot in conserve mode; it attempts to recover by restricting traffic.
(Reboot is a last-resort crash, not a configured action).
B: Inspection modes (Proxy vs. Flow) are defined in firewall policies and cannot be dynamically switched by the system during runtime.
C: The system does not arbitrarily stop "non-essential processes" like logging or AV. Logging is critical for audit trails. While av-failopen can be configured to bypass scanning, the system typically defaults to "Fail- Close" (dropping traffic) rather than stopping the engines themselves.
Reference:
FortiGate Security 7.6 Study Guide (Diagnostics & Resource Usage): "When memory usage reaches the extreme threshold (95%), all new sessions are dropped to prevent memory exhaustion."
NEW QUESTION # 61
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