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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Routing & VPN | 25% | - SD-WAN design & SLA management - OSPF, BGP, IS-IS configuration & optimization - Route redistribution & filtering - IPsec VPN & ADVPN architecture |
| Topic 2: Centralized Management | 20% | - Policy packages & object templates - Configuration provisioning & version control - FortiAnalyzer logging & reporting - FortiManager 7.6 deployment & role assignment |
| Topic 3: System Architecture & Design | 20% | - Hardware sizing & resource planning - VDOM design & multi-tenant deployment - FortiOS 7.6 architecture & components - Security Fabric integration & scaling |
| Topic 4: Security Policy & Services | 10% | - Advanced firewall & security profile design - NAT & IP pool optimization - Identity-based policies |
| Topic 5: High Availability & Redundancy | 15% | - Cross-data center redundancy - Session synchronization & failover - FGCP/FGSP/vCluster deployment |
| Topic 6: Monitoring & Troubleshooting | 10% | - Fabric synchronization issues - Diagnostic tools & CLI analysis - Connectivity & performance troubleshooting |
>> NSE7_FSN_AR-7.6 Reliable Exam Topics <<
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NEW QUESTION # 17
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 # 18
Refer to the exhibit.
The partial output of FortiOS kernel slabs is shown. Which statement about total slab size is true?
Answer: B
Explanation:
The correct answer is B.
The study guide explicitly states that slabs are used by the kernel: "The kernel memory slabs are collections of objects with a common purpose. The kernel uses them to store information in memory." It also gives the exact calculation method: "Total slab size = available objects x object size" and explains that in the diagnose hardware sysinfo slab output, the columns are active objects, available objects, and object size From the exhibit:
tcp_session 3 5 1500 ...
available objects = 5
object size = 1500
So:
Total slab size = 5 × 1500 = 7500
That matches option B.
Why the other options are wrong:
A: ip_session 10 10 1408 ... gives 10 × 1408 = 14080, but slabs are associated with the kernel, not user space C: ip6_session 5 0 1472 ... gives 0 × 1472 = 0, not 1472 D: UDPv6 15 10 1408 ... gives 10 × 1408 = 14080, but again slabs are associated with the kernel, not user space So the verified answer is B.
NEW QUESTION # 19
Refer to the exhibits.
An administrator is attempting to advertise the network configured on port3. However, FGT-A is not receiving the prefix.
Which two actions can the administrator take to fix this problem? (Choose two.)
Answer: A,D
NEW QUESTION # 20
Refer to the exhibit.
Partial output of diagnose sys session stat command is shown.
An administrator has noticed unusual behavior from FortiGate. It appears that sessions are randomly removed.
Which two reasons could explain this? (Choose two.)
Answer: B,D
Explanation:
To determine why sessions are being removed, we must interpret the specific counters in the diagnose sys session stat output provided in the exhibit.
Analyze memory_tension_drop (Reason A):
Observation: The output shows memory_tension_drop=4.
This counter specifically increments when the FortiGate kernel attempts to allocate a new memory page for a session but fails due to a lack of available system memory. As a result, the session creation is aborted or an existing session is dropped to free up resources. This confirms that the kernel is struggling to allocate memory pages.
Analyze extreme_low_mem (Reason D):
Observation: The output shows extreme_low_mem=0 (which is good), but we must look at the context of memory_tension_drop.
Context: While the extreme_low_mem counter itself is 0 in this snapshot, the presence of memory_tension_drop indicates the system is under memory pressure. Furthermore, in many Fortinet exam contexts involving this specific exhibit, the focus is on the mechanism of " flushing sessions " to recover memory.
Refinement: Actually, look closer at the exhibit. It shows flush=787.
The flush counter indicates the number of times the system has actively purged (flushed) old or stale sessions from the table to recover memory or due to policy changes. A high flush count combined with memory tension drops strongly suggests the system is aggressively removing sessions to handle high memory usage.
Therefore, " FortiGate is flushing sessions because of high memory usage " is the correct interpretation of the flush and memory_tension_drop counters working together.
Why other options are incorrect:
B: There is no counter in this specific output (like tcp_syn_sent drop) that indicates dropping incomplete handshakes. The clash=0 and delete=0 counters are low/zero.
C: The dev_down=16/120 field does not mean the device was down for 10 seconds. It refers to device index pointers or internal kernel interface states, not system uptime/downtime impacting session acceptance in the way described.
Reference:
FortiGate Troubleshooting Guide (System Resources): " The memory_tension_drop counter indicates sessions dropped due to kernel memory exhaustion. The flush counter indicates sessions removed to free up table space. "
NEW QUESTION # 21
Refer to the exhibit, which shows the output of a real-time debug. Which statement about this output is true?
(Choose one answer)
Answer: B
Explanation:
The correct answer is A .
The debug output is for an HTTPS request and shows a hostname value. The study guide explains that with SSL certificate inspection, FortiGate extracts the FQDN from either:
* "TLS extension server name indication (SNI)"
* "SSL certificate common name (CN)"
So the hostname shown in the real-time web-filter debug can be derived from the SNI in the client request or, if needed, from the CN in the server certificate. That makes A correct.
Why the other options are wrong:
* B is wrong because the study-guide example for web-filter real-time debug explicitly says: "This slide shows an example of real-time debug output when the URL to categorize isn ' t in the FortiGuard cache." In these debugs, cat=255 appears before the final lookup result, so this does not indicate a local- cache hit.
* C is wrong because ftgd-allow is the action , not the profile name. The debug line shows the action as action=9 (ftgd-allow) while the profile shown is profile= ' default ' . FortiOS web-filter logs also use the profile field separately from the action field
* D is wrong because the final category shown is url_cat=52 , not 255. The study guide's example shows the same pattern: an initial cat=255 in the request line, followed by the resolved result cat=52 url_cat=52 So the verified answer is: A .
NEW QUESTION # 22
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