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Fortinet Network Security Expert 4 Written Exam (400) Sample Questions:

1. Which of the following IPsec configuration modes can be used when the FortiGate is running in NAT mode?

A) Both policy-based and route-based VPN.
B) IPSec VPNs are not supported when the FortiGate is running in NAT mode.
C) Policy-based VPN only
D) Route-based VPN only.

2. For FortiGate devices equipped with Network Processor (NP) chips, which are true?
(Choose three.)

A) Sessions for policies that have a security profile enabled can be NP offloaded.
B) When the last packet is sent or received, such as a TCP FIN or TCP RST signal, the NP returns this session to the CPU for tear down.
C) Once offloaded, unless there are errors, the NP forwards all subsequent packets. The
CPU does not process them.
D) For each new IP session, the first packet always goes to the CPU.
E) The kernel does not need to program the NPU. When the NPU sees the traffic, it determines by itself whether it can process the traffic

3. Which best describe the mechanism of a TCP SYN flood?

A) The attacker keeps open many connections with slow data transmission so that other clients cannot start new connections.
B) The attacker sends a specially crafted malformed packet, intended to crash the target by exploiting its parser.
C) The attacker sends a packet designed to "sync" with the FortiGate.
D) The attacker starts many connections, but never acknowledges to fully form them.

4. Which statement concerning IPS is false?

A) One-arm topology with sniffer mode improves performance of IPS blocking.
B) IPS can detect zero-day attacks.
C) The status of the last service update attempt from FortiGuard IPS is shown on
System>Config>FortiGuard and in output from 'diag autoupdate version'
D) IPS packages contain an engine and signatures used by both IPS and other flow-based scans.

5. Which is one of the conditions that must be met for offloading the encryption and decryption of IPsec traffic to an NP6 processor?

A) Phase-2 anti-replay must be disabled.
B) IPsec traffic must not be inspected by any FortiGate session helper.
C) Phase 2 must have an encryption algorithm supported by the NP6.
D) no protection profile can be applied over the IPsec traffic.

Solutions: