Fortinet Updated NSE7_FSN_AR-7.6 Exam Questions and Answers by safiyyah

The correct answer is D.

In the exhibit, get router info routing-table database shows both static default routes:

0.0.0.0/0 [20/0] via 100.64.2.254, port2

0.0.0.0/0 [10/0] via 100.64.1.254, port1

But get router info routing-table all shows only:

0.0.0.0/0 [10/0] via 100.64.1.254, port1

The study guide explains that get router info routing-table all displays the routes that make it to the FIB — the best active routes. It also says that this command doesn’t show standby or inactive routes, which can remain only in the routing table database. It gives the exact rule: “when two static routes to the same destination subnet have different distances, the one with the lower distance is installed in the routing table, and the one with the higher distance is installed in the routing table database.”

The study guide also shows the route selection process:

Most specific route

Lowest distance

Lowest metric (dynamic routes)

Lowest priority (static routes)

ECMP

So the port2 default route is absent from the second output because its distance is 20, while the port1 default route has distance 10. The lower-distance route is installed in the active routing table/FIB.

Why the other options are wrong:

A is wrong because the exhibit does not indicate port2 is down or disabled.

B and C are wrong because priority is checked only after distance for static routes. Here, the routes already differ by distance, so priority is not the deciding factor.

So the verified answer is: D.

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.