NSE7_EFW Security And VPN Practice Question
When configuring an IPsec tunnel using IKEv2, which THREE parameters are commonly negotiated during Phase 1?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Encryption algorithm (e.g., AES-256)
IKEv2 negotiates encryption, integrity, and Diffie-Hellman groups during the initial exchange.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Encryption algorithm (e.g., AES-256)
Why this is correct
This ensures confidentiality.
- ✓
Authentication method (e.g., PSK or RSA)
Why this is correct
This verifies the peer identity.
- ✗
TCP port selection
Why it's wrong here
IKE uses UDP 500/4500.
- ✗
Firewall policy ID
Why it's wrong here
Policies are local and not negotiated.
- ✓
Diffie-Hellman group
Why this is correct
This provides secure key exchange.
Quick reference
VPN Protocol Comparison
| Protocol | Port | Encryption | Authentication | Use Case |
|---|---|---|---|---|
| IKEv2 / IPsec | UDP 500 / 4500 | AES-256 | Certificates / PSK | Site-to-site & remote access |
| SSL / TLS VPN | TCP 443 | TLS 1.3 | Certificates / MFA | Clientless remote access |
| L2TP / IPsec | UDP 1701 | AES (IPsec) | PSK / Certificates | Legacy remote access |
| WireGuard | UDP 51820 | ChaCha20 | Public keys | Modern high-performance VPN |
| PPTP | TCP 1723 | MPPE (weak) | MS-CHAPv2 | Legacy — avoid in production |
PPTP is considered insecure. IKEv2/IPsec and SSL VPN are the current recommended options.
About these practice questions
This NSE7_EFW question is part of Courseiva's 91-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Fortinet exam blueprint
This NSE7_EFW practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7_EFW exam.