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| Section | Objectives |
|---|---|
| Enterprise Firewall | - System configuration
|
| SD-WAN | - Centralized management
|
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NEW QUESTION # 79
You configure the overlay tunnels for an SD-WAN hub-and-spoke topology defined with IPsec tunnels, BGP on loopback, and dynamic BGP.
Which two are recommended IPsec settings for this topology? (Choose two answers.)
Answer: C,D
Explanation:
The SD-WAN 7.6 Enterprise Administrator Study Guide identifies the recommended BGP-on-loopback IPsec settings. For branches, it specifies:
* "Static tunnel type (remote end IP address is known)."
* "net-device enable."
Enabling net-device on the spoke creates a kernel interface for the tunnel. This assists with tunnel monitoring and management and is required to support ADVPN shortcut tunnels. Dynamic BGP establishes on-demand BGP peerings between spokes after an ADVPN shortcut is created; therefore, the spoke must support those dynamic shortcut interfaces. This makes option C correct.
The spoke should also configure localid. The FortiOS 7.6 Administrator Study Guide explains: "Local ID: if the peer accepts a specific peer ID, type that same peer ID in this field." The local ID supplies the spoke's IKE identity to the dial-up hub, allowing the hub to identify and authenticate the connecting spoke correctly.
Therefore, option D is correct.
Option A reverses the recommended roles. The hub must use a dynamic tunnel type because it operates as the dial-up server and does not require every spoke's changing public gateway address in advance.
Option B is also incorrect. The guide states: "There is no need to configure any tunnel IP address, so the IKE Mode Config is not used." BGP on loopback uses the loopback address and exchange-interface-ip instead of IKE mode configuration.
References: SD-WAN 7.6 Enterprise Administrator Study Guide, SD-WAN Overlay Design and Best Practices
, pages 118-119 and 122; FortiOS 7.6 Administrator Study Guide, IPsec VPN - Phase 1 Network Settings , page 375; FortiOS 7.6 - BGP on loopback .
NEW QUESTION # 80
Refer to the exhibit.
The partial output of FortiOS kernel slabs is shown. Which statement about total slab size is true?
Answer: C
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 # 81
While troubleshooting a FortiGate web filter issue, users report that they cannot access any websites, even though those sites are not explicitly blocked by any web filter profiles that are applied to firewall policies.
What are the three most likely reasons for this behavior? (Choose three answers)
Answer: A,B,C
Explanation:
The reported symptom-users unable to access any websites despite no explicit blocks in the profile-points to systemic connectivity or configuration issues rather than specific URL filtering rules.
* Option B (SSL/TLS Inspection): When Deep Inspection is enabled, the FortiGate acts as a Man-in- the-Middle (MitM) and re-signs server certificates using its own CA. If the clients (browsers) do not trust this CA (i.e., the certificate is not installed in their Trusted Root store), they will reject the connection with certificate errors, effectively preventing access to all HTTPS websites.
* Option D (DNS): Web browsing relies on DNS resolution . If the configured DNS server is unreachable or failing, the FortiGate (or the client) cannot resolve FQDNs to IP addresses.
Consequently, browsers will fail to load any page, resulting in a total loss of web access.
* Option E (License): If the FortiGuard Web Filtering license expires, the FortiGate can no longer query the FortiGuard Distribution Network (FDN) for ratings. By default, or if the allow-when-rating- error setting is disabled (a common security practice), the FortiGate will block all web traffic that it cannot rate, often displaying a " Web Filter Service Error " or invalid license page.
Option A is incorrect because clearing the cache only increases latency, it does not block traffic. Option C is incorrect because webfilter-force-off is typically used to disable the service (often allowing traffic to bypass checks if the service is down), rather than blocking it.
NEW QUESTION # 82
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: B,C
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 # 83
Refer to the exhibit.
The partial output of a session table entry is shown.
Which two statements about the output shown in the exhibit are correct? (Choose two.)
Answer: B,D
Explanation:
The correct answers are B and C . The session table output clearly shows policy_id=1 , which means the traffic matched firewall Policy ID 1 . That directly validates option B . The output also shows NPU-related offload indicators, including npu_state=... ips_offload and npu info: ... offload=8/8, ips_offload=1/1 .
These fields indicate that the session has been offloaded to hardware, so option C is correct. The study guide explains that FortiGate can offload sessions to network processors after session establishment, allowing subsequent packets to bypass normal CPU/kernel processing for improved performance. It also states that offloaded sessions are handled by the network processor rather than the CPU path.
Option A is too specific and is not proven by the exhibit. The output shows NPU offload, but it does not explicitly identify the hardware as NP7. Do not assume NP7 unless the platform or output confirms it.
Option D is wrong because the VLAN-related fields show vlan=0x0000/0x0000 and vtag_in=0x0000
/0x0000, which means the traffic is not VLAN-tagged.
NEW QUESTION # 84
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