A FortiGate is configured to use IKEv2 with a pre-shared key. The remote peer is a third-party device that only supports IKEv1. What is the most likely outcome?

The VPN will establish but with reduced security

The VPN will establish using IKEv2 with a warning

The VPN will establish using IKEv1 automatically

The VPN will not establish because the IKE versions are incompatible

What does a higher Diffie-Hellman group number (e.g., group 14 vs. group 2) indicate?

Lower CPU usage on the FortiGate

Better compatibility with older devices

A larger key size and stronger cryptographic strength

What is a common cause of an IPsec VPN tunnel failing to establish?

Mismatched pre-shared keys between the peers

Incorrect DNS server settings on the FortiGate

The FortiGate's firmware version is too new

The remote peer's web filter is blocking traffic

What is the role of SHA-256 in an IPsec VPN?

To provide data integrity by generating a hash of the packet

To compress the data before transmission

To perform the Diffie-Hellman key exchange

FortinetNSE 4 - FortiOS 7.6 Administrator

Domain 5Objective 1

IPsec VPN Concepts NSE4-FORTIOS-ADMINISTRATOR Practice Questions (Page 1)

Part of the VPNs domain, which accounts for 10-15% of the NSE4-FORTIOS-ADMINISTRATOR exam. Fortinet does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–9 in this domain), expect 1–2 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

9concepts

10-15%of the exam

Questions 1–5

1expert · hard
A FortiGate is configured to use IKEv2 with a pre-shared key. The remote peer is a third-party device that only supports IKEv1. What is the most likely outcome?
Select an answer first
2foundation · easy
What does a higher Diffie-Hellman group number (e.g., group 14 vs. group 2) indicate?
Select an answer first
3foundation · easy
What is a common cause of an IPsec VPN tunnel failing to establish?
Select an answer first
4foundation · easy
Which algorithm is used for encryption in IPsec VPNs?
Select an answer first
5foundation · easy
What is the role of SHA-256 in an IPsec VPN?
Select an answer first

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