Fortinet NSE7_EFW-7.2 Practice Test - Questions Answers, Page 2

For improving reliability over a lossy IPSec tunnel, the fragmentation and fragmentation-mtu parameters should be configured. In scenarios where there might be issues with packet size or an unreliable network, setting the IPsec phase 1 to allow for fragmentation will enable large packets to be broken down, preventing them from being dropped due to size or poor network quality. The fragmentation-mtu specifies the size of the fragments. This is aligned with Fortinet's recommendations for handling IPsec VPN over networks with potential packet loss or size limitations.

In IKE version 2, not all packets are fragmentable. Only certain messages within the IKE negotiation process can be fragmented. Additionally, there is a limit to the number of fragments that IKE version 2 can handle, which is 128. This is specified in the Fortinet documentation and ensures that the IKE negotiation process can proceed even in networks that have issues with large packets. The reassembly timeout and the layer at which fragmentation occurs are not specified in this context within Fortinet documentation.

Bidirectional Forwarding Detection (BFD) is a rapid protocol for detecting failures in the forwarding path between two adjacent routers, including interfaces, data links, and forwarding planes. BFD is designed to detect forwarding path failures in a very short amount of time, often less than one second, which is significantly faster than traditional failure detection mechanisms like hold-down timers in routing protocols.

Fortinet supports BFD for BGP, and it can be used over multiple hops, which allows the detection of failures even if the BGP peers are not directly connected. This functionality enhances the ability to maintain stable BGP sessions over a wider network topology and is documented in Fortinet's guides.

For the web filtering feature to function effectively, the FortiGate device needs to have a server configured for rating services. The rating option in the server-type setting specifies that the server is used for URL rating lookup, which is essential for web filtering. The displayed configuration does not list any FortiGuard web filtering servers, which would be necessary for web filtering. The setting set include-default-servers disable indicates that the default FortiGuard servers are not being used, and hence, a specific server for web filtering (like securewf.fortiguard.net) needs to be configured.

The neighbor-group command in FortiOS allows for the application of common settings to a group of neighbors in OSPF, and can also be used to simplify configuration by applying common settings to both IBGP and EBGP neighbors. This grouping functionality is a part of the FortiOS CLI and is documented in the Fortinet CLI reference.

The inability to modify the Finance address object while being able to modify the Engineering address object suggests that the Finance object is being managed by a higher authority in the Security Fabric, likely the root FortiGate. When a FortiGate is part of a Security Fabric, address objects and other configurations may be managed centrally. This aligns with the Fortinet FortiGate documentation on Security Fabric and central management of address objects.

Given the network diagram and the presence of two FortiGate devices, the Fortinet Gate Clustering Protocol (FGCP) in active-passive mode is the most appropriate for setting up a FortiGate cluster. FGCP supports high availability configurations and is designed to allow one FortiGate to seamlessly take over if the other fails, providing continuous network availability. This is supported by Fortinet documentation for high availability configurations using FGCP.

Fail-open is a feature that allows traffic to pass through the IPS sensor without inspection when the sensor fails or is overloaded.If fail-open is set to disable, traffic will be dropped in such scenarios1.Reference: =IPS | FortiGate / FortiOS 7.2.3 - Fortinet Documentation

When IPS (Intrusion Prevention System) is configured, if fail-open is set to disable, it means that if the IPS engine fails, traffic will not be allowed to pass through, which can result in traffic being dropped (D). This is in contrast to a fail-open setting, which would allow traffic to bypass the IPS engine if it is not operational.

Option A is correct because the OSPF interface network types determine how the routers form adjacencies and exchange LSAs on a network segment.The network types must match for the routers to become neighbors1.

Option B is correct because the OSPF router IDs are used to identify each router in the OSPF domain and to establish adjacencies.The router IDs must be unique for the routers to become neighbors2.

Option E is correct because the authentication settings control how the routers authenticate each other before exchanging OSPF packets.The authentication settings must match for the routers to become neighbors3.

Option C is incorrect because the OSPF interface priority settings are used to elect the designated router (DR) and the backup designated router (BDR) on a broadcast or non-broadcast multi-access network.The priority settings do not have to be unique for the routers to become neighbors, but they affect the DR/BDR election process4.

Option D is incorrect because the OSPF link costs are used to calculate the shortest path to a destination network based on the bandwidth of the links.The link costs do not have to match for the routers to become neighbors, but they affect the routing decisions5.Reference: =

1: OSPF network types

2: OSPF router ID

3: OSPF authentication

4: OSPF interface priority

5: OSPF link cost