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| Section | Objectives |
|---|---|
| Topic 1: Threat Protection and Security Services | - Application control and security profiles - IPS, antivirus, and web filtering |
| Topic 2: Routing, Switching, and High Availability | - HA cluster configuration and failover - Static and dynamic routing fundamentals |
| Topic 3: Troubleshooting and Diagnostics | - Performance and connectivity troubleshooting - Traffic debugging tools and logs |
| Topic 4: VPN and Secure Connectivity | - SSL VPN deployment - IPsec VPN configuration and troubleshooting |
| Topic 5: Network Security Fundamentals and FortiGate Architecture | - Security fabric concepts and integration - FortiGate system architecture and components |
| Topic 6: Firewall Policies and Traffic Management | - Policy configuration and rule processing - NAT and traffic inspection flow |
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NEW QUESTION # 33
When FortiGate enters conserve mode because of memory pressure, which action can FortiGate perform to preserve memory?
Answer: A
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 # 34
Refer to the exhibits.
An administrator Is expecting to receive advertised route 8.8.8.8/32 from FGT-A. On FGT-B, they confirm that the route is being advertised and received, however, the route is not being injected into the routing table.
What is the most likely cause of this issue?
Answer: B
NEW QUESTION # 35
Refer to the exhibit, which shows the output of get router info ospf neighbor.
What can you conclude from the command output?
Answer: B
NEW QUESTION # 36
Refer to the exhibit.
The output of the command diagnose vpn tunnels liar is shown.
Which two statements accurately describe the status of the tunnel? (Choose two.)
Answer: C,D
Explanation:
Based on the Fortinet FCSS - Network Security 7.6 documents and the analysis of the VPN tunnel exhibit, here is the verified answer.
Questions no: 91
Verified Answer: A, C
Comprehensive and Detailed Explanation with all FCSS - Network Security 7.6 documents:
To determine the status of the VPN tunnel, we must examine the specific counters and fields in the diagnose vpn tunnel list output provided in the exhibit.
* Analyze Phase 2 Status (Option A):
* The output displays child_num=0.
* In IKEv2 (and IKEv1 implementations in FortiOS), "Child SAs" refer to the Phase 2 (IPsec) Security Associations that carry the actual data traffic.
* A value of 0 indicates that no Phase 2 tunnels are established. If Phase 2 were up, child_num would be at least 1.
* Additionally, under the proxyid section, the field sa=0 confirms there is no active Security Association for that traffic selector.
* Analyze Traffic Status (Option C):
* The stat line shows: rxp=0 txp=0 rxb=0 txb=0.
* rxp (Received Packets) and txp (Transmitted Packets) are both zero. This definitively confirms that no traffic is traversing the tunnel currently. This is expected since Phase 2 is down.
* Analyze Phase 1 Status (Why B is incorrect):
* The tunnel entry exists in the list with a valid tun_id, and NAT-Traversal is active (natt:
mode=keepalive).
* The presence of the tunnel in this command output, along with active Keepalive mechanisms, typically indicates that Phase 1 (IKE SA) is established and the peers are communicating on port 4500 (NAT-T), even though the data tunnels (Phase 2) failed to negotiate. If Phase 1 were down, the tunnel would often not appear in this "list" view or would show different status flags indicating a complete connection failure.
Conclusion: The exhibit shows a scenario where the Phase 1 control channel is likely up (evidenced by the entry existence and NATT keepalives), but the Phase 2 data channel is down (child_num=0), resulting in zero traffic flow (rxp=0/txp=0).
NEW QUESTION # 37
What are two reasons you might see iprope_in_check() check failed, drop when using the debug flow?
(Choose two.)
Answer: A,C
NEW QUESTION # 38
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