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| Section | Objectives |
|---|---|
| SD-WAN | - Troubleshooting
|
| Enterprise Firewall | - System configuration
|
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NEW QUESTION # 162
Refer to the exhibit.
Partial output of the get vpn ipsec tunnel details command is shown. Based on the output, which two statements are correct? (Choose two.)
Answer: A,B
Explanation:
The correct answers are C and D.
The study guide's get vpn ipsec tunnel details example shows:
replay: enabled
inbound and outbound sections with separate SPIs
NPU acceleration: encryption(outbound) decryption(inbound)and it labels these as "Phase 2 SAs for each direction" and "Hardware acceleration" This directly proves D. Anti-replay is enabled, because the output explicitly says replay: enabled For the NPU status, the study guide explains the exact npu_flag meanings:
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
Because the exhibit shows hardware acceleration in both directions - encryption(outbound) and decryption (inbound) - the matching npu_flag is 03, not 02. That makes C correct and A incorrect.
Why B is wrong:
The same study guide output labels the tunnel as having Phase 2 SAs for each direction, so different inbound and outbound SPIs are normal for the two SAs. Also, the FortiOS administration guide explains that auto- negotiate controls whether phase 2 SA negotiation is initiated automatically, not whether inbound and outbound SPIs are different: "By default the phase 2 security association (SA) is not negotiated until a peer attempts to send data... Auto-negotiate initiates the phase 2 SA negotiation automatically..." So the verified answers are: C, D.
NEW QUESTION # 163
Refer to the exhibit, which shows one way communication of the downstream FortiGate with the upstream FortiGate within a Security Fabric.
What three actions must you take to ensure successful communication? (Choose three.)
Answer: A,C,D
NEW QUESTION # 164
The local OSPF router is unable to establish adjacency with a peer.
Which two things should the administrator do to troubleshoot the issue? (Choose two.)
Answer: C,D
Explanation:
The correct answers are A and B .
The Network Security Support Engineer 7.6 Study Guide states under OSPF Troubleshooting :
"Follow these steps to troubleshoot an OSPF problem between two peers:
* Check that the local router can reach the remote peer. IP addresses must be in the same subnet and have the same subnet mask.
* Ensure that IP protocol 89 is not blocked.
* Hello and dead intervals must match.
* The OSPF router ID for each peer must be unique. Duplicate router IDs are not allowed.
* Do the MTUs match?
* If authentication is enabled, the type and password must match on both sides."** The same page also summarizes the troubleshooting tips as:
* "Do peers have an IP address within the same subnet?"
* "Is IP protocol 89 blocked?"
This directly confirms:
* A is correct
* B is correct
Why the other options are wrong:
* C is wrong because TCP port 179 is used by BGP , not OSPF. OSPF uses IP protocol 89 , as the study guide explicitly notes
* D is wrong because the study guide's OSPF adjacency troubleshooting checklist does not require an active static route to the peer. OSPF neighbors form adjacency on directly reachable networks, and the guide instead focuses on same subnet, protocol 89, intervals, router ID, MTU, and authentication matching So the verified answers are: A, B .
NEW QUESTION # 165
In the context of SD-WAN, the terms underlay and overlay are commonly used to categorize links.
Which two statements about underlay and overlay links are correct? (Choose two.)
Answer: B,C
Explanation:
The SD-WAN 7.6 Enterprise Administrator Study Guide explicitly defines the relationship between underlays and overlays:
"Overlays are virtual links built on top of physical links-called underlay links." It further explains that the overlay topology consists of VPN tunnels and "adds flexible routing options." Therefore, option B is directly supported.
Option D is also correct. An overlay is not restricted to a particular physical transport. Fortinet identifies ISP, MPLS, and 4G/5G cellular connectivity as possible WAN transports. Consequently, a wireless WAN connection can provide the underlying transport over which an IPsec, GRE, or IP-in-IP overlay tunnel is established.
Option C is incorrect because underlay connectivity is not limited to wired links; cellular 4G/5G is a valid WAN transport.
Option A is incorrect because FortiLink is primarily the proprietary connectivity used between FortiGate and managed LAN extensions such as FortiSwitch and FortiAP. It is not inherently an SD-WAN WAN underlay.
Option E is incorrect because Fortinet identifies VPN tunnels-principally IPsec, but also GRE and IP-in-IP- as SD-WAN overlay links. A VLAN is a Layer 2 logical segmentation mechanism, not an SD-WAN overlay tunnel.
Reference: SD-WAN Overlay Design and Best Practices - Overlay Fundamentals , page 94.
NEW QUESTION # 166
Refer to the exhibits.
Exhibit - Interface configuration and FortiGate routing table
Video exhibit showing port2 preserve-session-route configuration and the FortiGate routing table with two default routes.
The administrator increases the member priority on port2 to 20.
Assuming the route egressing port2 is still valid, upon configuration changes and the receipt of new packets, which two actions does FortiGate perform on existing sessions established over port2? (Choose two.)
Answer: B,D
Explanation:
" The result is that the gateway address will not be updated, unless the existing gateway is no longer valid " The study guide identifies preserve-session-route as the configuration responsible for this behavior.
Technical Explanation:
The exhibit shows two WAN interfaces, port1 and port2, with static default routes.
Originally, both interfaces participate in routing with equal priority. The administrator changes the priority of port2 to 20, making port1 the preferred interface for new route selections.
However, the existing sessions were established using port2, and its interface configuration includes:
config system interface
edit " port2 "
set preserve-session-route enable
next
end
Option A is correct: The preserve-session-route setting enables interface stickiness for sessions using port2.
Because the original gateway and route remain valid, FortiGate preserves the existing sessions ' routing information and continues forwarding them through port2.
Option B is correct: Increasing the priority value on port2 makes it less preferred than port1. Consequently, new sessions that use the relevant default route are directed through port1.
Why the other options are incorrect:
Option C: FortiGate does not automatically update existing SNAT session gateway information merely because a more preferred path becomes available. The guide identifies snat-route-change as a separate setting used to permit appropriate SNAT route updates.
Option D: A route change can cause affected sessions to be marked dirty and reevaluated, but it is not accurate to conclude that every session is necessarily marked dirty or that dirty status overrides interface stickiness.
Option E: SNAT session dirty-state handling does not depend exclusively on using an IP pool. Interface-based SNAT sessions can also be affected by routing changes.
Architectural Consideration:
This distinction is important for SD-WAN failback design. Preserving established sessions can help maintain connection continuity, but it can also prevent traffic from returning to a preferred WAN interface until the session ends or the preserved route becomes invalid.
References: SD-WAN 7.6 Enterprise Administrator Study Guide, Solution Slides, pages 281, 293, and 297-
300.
NEW QUESTION # 167
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