NSE4 Exam - Fortinet Network Security Expert 4 Written Exam (400)

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Q1. - (Topic 21) 

Which statements are correct regarding an IPv6 over IPv4 IPsec configuration? (Choose two.) 

A. The source quick mode selector must be an IPv4 address. 

B. The destination quick mode selector must be an IPv6 address. 

C. The Local Gateway IP must be an IPv4 address. 

D. The remote gateway IP must be an IPv6 address. 

Answer: B,C 

Q2. - (Topic 14) 

Two devices are in an HA cluster, the device hostnames are STUDENT and REMOTE. Exhibit A shows the command output of diagnose sys session stat for the STUDENT device. Exhibit B shows the command output of diagnose sys session stat for the REMOTE device. 

Exhibit A: 

Exhibit B: 

Given the information provided in the exhibits, which of the following statements are correct? (Choose two.) 

A. STUDENT is likely to be the master device. 

B. Session-pickup is likely to be enabled. 

C. The cluster mode is active-passive. 

D. There is not enough information to determine the cluster mode. 

Answer: A,D 

Q3. - (Topic 10) 

Which statements are true regarding traffic shaping that is applied in an application sensor, and associated with a firewall policy? (Choose two.) 

A. Shared traffic shaping cannot be used. 

B. Only traffic matching the application control signature is shaped. 

C. Can limit the bandwidth usage of heavy traffic applications. 

D. Per-IP traffic shaping cannot be used. 

Answer: B,C 

Q4. - (Topic 6) 

Which IPsec configuration mode can be used for implementing GRE-over-IPsec VPNs?. 

A. Policy-based only. 

B. Route-based only. 

C. Either policy-based or route-based VPN. 

D. GRE-based only. 

Answer:

Q5. - (Topic 11) 

In the case of TCP traffic, which of the following correctly describes the routing table lookups performed by a FortiGate operating in NAT/Route mode, when searching for a suitable gateway? 

A. A lookup is done only when the first packet coming from the client (SYN) arrives. 

B. A lookup is done when the first packet coming from the client (SYN) arrives, and a second one is performed when the first packet coming from the server (SYN/ACK) arrives. 

C. Three lookups are done during the TCP 3-way handshake (SYN, SYN/ACK, ACK). 

D. A lookup is always done each time a packet arrives, from either the server or the client side. 

Answer:

Q6. - (Topic 12) 

A FortiGate unit is configured with three Virtual Domains (VDOMs) as illustrated in the exhibit. 

Which of the following statements are true if the network administrator wants to route traffic between all the VDOMs? (Choose three.) 

A. The administrator can configure inter-VDOM links to avoid using external interfaces and routers. 

B. As with all FortiGate unit interfaces, firewall policies must be in place for traffic to be allowed to pass through any interface, including inter-VDOM links. 

C. This configuration requires a router to be positioned between the FortiGate unit and the Internet for proper routing. 

D. Inter-VDOM routing is automatically provided if all the subnets that need to be routed are locally attached. 

E. As each VDOM has an independent routing table, routing rules need to be set (for example, static routing, OSPF) in each VDOM to route traffic between VDOMs. 

Answer: A,B,E 

Q7. - (Topic 3) 

For traffic that does match any configured firewall policy, what is the default action taken by the FortiGate? 

A. The traffic is allowed and no log is generated. 

B. The traffic is allowed and logged. 

C. The traffic is blocked and no log is generated. 

D. The traffic is blocked and logged. 

Answer:

Q8. - (Topic 17) 

Which statement describes what the CLI command diagnose debug authd fsso list is used for? 

A. Monitors communications between the FSSO collector agent and FortiGate unit. 

B. Displays which users are currently logged on using FSSO. 

C. Displays a listing of all connected FSSO collector agents. 

D. Lists all DC Agents installed on all domain controllers. 

Answer:

Q9. - (Topic 11) 

Examine the exhibit; then answer the question below. 

The Vancouver FortiGate initially had the following information in its routing table: S 172.20.0.0/16 [10/0] via 172.21.1.2, port2 

C 172.21.0.0/16 is directly connected, port2 C 172.11.11.0/24 is directly connected, port1 Afterwards, the following static route was added: config router static edit 6 set dst 172.20.1.0 255.255.255.0 set pririoty 0 set device port1 set gateway 172.11.12.1 next end Since this change, the new static route is NOT showing up in the routing table. Given the 

information provided, which of the following describes the cause of this problem? 

A. The subnet 172.20.1.0/24 is overlapped with the subnet of one static route that is already in the routing table (172.20.0.0/16), so, we need to enable allow-subnet-overlap first. 

B. The 'gateway' IP address is NOT in the same subnet as the IP address of port1. 

C. The priority is 0, which means that the route will remain inactive. 

D. The static route configuration is missing the distance setting. 

Answer:

Q10. - (Topic 13) 

Which statements correctly describe transparent mode operation? (Choose three.) 

A. The FortiGate acts as transparent bridge and forwards traffic at Layer-2. 

B. Ethernet packets are forwarded based on destination MAC addresses, NOT IP addresses. 

C. The transparent FortiGate is clearly visible to network hosts in an IP trace route. 

D. Permits inline traffic inspection and firewalling without changing the IP scheme of the network. 

E. All interfaces of the transparent mode FortiGate device must be on different IP subnets. 

Answer: A,B,D