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| Section | Objectives |
|---|---|
| Enterprise Firewall | - High availability - Troubleshooting - Security Fabric integration - Routing and advanced networking - Centralized management and analytics - Authentication and identity - Advanced firewall deployment - VPN technologies |
| SD-WAN | - Overlay VPN - Deployment and troubleshooting - SD-WAN architecture - Application steering - SD-WAN routing - Performance SLA |
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NEW QUESTION # 68
Refer to the exhibit.
The output of diagnose sys session list command is shown.
If the HA ID for the primary device is 9, what happens if the primary fails and the secondary becomes the primary?
Answer: B
Explanation:
The output of the diagnose sys session list command provides the critical evidence needed to determine the behavior during a failover:
Session Synchronization (synced):
The most important indicator in the exhibit is the synced flag located in the state= line (state=may_dirty synced none app_ntf).
In FortiOS HA (High Availability), the synced flag confirms that this specific session has been successfully synchronized from the primary device to the secondary (backup) device.
Session synchronization (Session Pickup) ensures that if the primary unit fails, the secondary unit already has the session in its table and can resume traffic processing immediately.
TCP State (proto_state=01):
The output shows proto=6 (TCP) and proto_state=01.
In the FortiGate session table, proto_state=01 for TCP indicates that the session is in the ESTABLISHED state (post-three-way handshake).
This invalidates Option B, which claims the TCP session is not fully established.
Failover Outcome:
Because the session is ESTABLISHED and SYNCED, the secondary device will seamlessly take over the session upon primary failure.
The traffic continues to flow through the new primary without requiring the user/client to restart the connection. This is the primary function of HA Session Pickup.
Why other options are incorrect:
A: While the output shows app_ntf (Application Control notification) and may_dirty, the presence of the synced flag overrides this concern regarding failover. If the session type were not supported for failover (e.g., certain proxy sessions in older versions), it would not be marked as synced. Since it is synced, it persists.
B: As noted, proto_state=01 means established, not " not fully established " .
D: While the kernel updates routing tables, the purpose of syncing the session is to preserve the state so it does not need to be re-evaluated as a new packet would, preventing traffic drops.
Reference:
FortiGate Security 7.6 Study Guide (High Availability): " If session pickup is enabled, the primary unit synchronizes its session table... to the backup unit. If the primary unit fails, the backup unit... continues to process the sessions with no interruption. "
NEW QUESTION # 69
Refer to the exhibit, which shows the output of the command get router info bgp neighbors 100.64.2.254 advertised-routes.
What can you conclude from the output?
Answer: D
NEW QUESTION # 70
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
Explanation:
The 8.8.8.8/32 route is visible in the OSPF database on FGT-B but not installed into the routing table-the most likely explanation is that FGT-B is filtering it from being installed.
NEW QUESTION # 71
Refer to the exhibit, which shows the output of diagnose sys session list.
If the HA ID for the primary device is 0, what happens if the primary fails and the secondary becomes the primary?
Answer: A
Explanation:
The decisive session-state flag is synced. Fortinet defines this flag as indicating that the session has been synchronized to the other HA members. The session was created on HA member 0, and a synchronized copy is available to the secondary device.
The FortiOS 7.6 Administrator Study Guide states: "When you enable session synchronization, the new primary can resume communication for sessions after a failover event." It further explains that session pickup allows existing sessions to continue through the newly elected primary with minimal or no interruption.
Therefore, the established TCP session remains usable, and the client does not need to establish a new connection.
The may_dirty flag does not mean that the session is currently dirty. It identifies an allowed session that can be marked dirty later if a firewall-policy, routing, or related configuration change requires re-evaluation. The output does not contain the separate dirty flag. Additionally, app_ntf represents block-notification handling; it does not prove that application control is inspecting the session. The fields app_list=0 and app=0 reinforce this.
The allow_err values are session statistics and do not cause session deletion. Although act=snat and act=dnat confirm NAT, the translation tuples are part of the synchronized session state and do not independently require re-evaluation after FGCP failover.
References: High Availability - Cluster Synchronization and HA Failover, pages 456 and 463; Fortinet: HA session failover; Fortinet: Session-table information.
NEW QUESTION # 72
What are two reasons that an OSPF router does not have any type 5 tank-state advertisements (LSAs) In its link-stale database (LSD6)? (Choose two.)
Answer: B,C
Explanation:
To understand why Type 5 LSAs (AS External LSAs) are missing from the Link-State Database (LSDB), we must look at how OSPF generates and propagates them:
A). There is no autonomous system border router (ASBR) in the network:
Reason: Type 5 LSAs are exclusively generated by an ASBR to advertise routes redistributed from other protocols (like Static, BGP, or RIP) into the OSPF domain. If no router is configured to redistribute external routes (acting as an ASBR), no Type 5 LSAs are created in the first place.
C). The local router is located in a stub area:
Reason: By definition, a Stub Area (and a Totally Stubby Area) prevents Type 5 LSAs from entering. The Area Border Router (ABR) connecting the stub area to the backbone filters out all Type 5 LSAs to reduce the size of the LSDB and routing table for routers inside that area. Instead, a default route is usually injected.
Why other options are incorrect:
B: While database filtering exists, standard prefix-list filtering typically affects the routing table (RIB) generation, not the underlying LSDB propagation of Type 5 LSAs, or it is less common than the architectural reasons (Stub/No ASBR).
D: IP Protocol 89 is the transport for OSPF itself. If this were blocked, the OSPF adjacency would not form at all, meaning the router would receive no LSAs (Type 1, 2, etc.), not specifically just Type 5.
Reference:
FortiGate Security 7.6 Study Guide (OSPF): " Type 5 LSAs are generated by ASBRs... Stub areas do not allow Type 5 LSAs; they are replaced by a default route. "
NEW QUESTION # 73
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