NetSec-Architect Practice Question: Multi Cloud And Hybrid Network Security Architecture
Which TWO protocols or mechanisms are commonly used for establishing secure site-to-site VPN connectivity between an on-premises datacenter and a public cloud VPC/VNet protected by VM-Series firewalls? (Choose two)
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
✓
BGP (Border Gateway Protocol) running over IPsec for dynamic route propagation
Site-to-site hybrid connectivity to VM-Series firewalls utilizes IPsec VPN (IKEv2/IKEv1) or cloud-native VPN gateways integrated with the firewalls.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
BGP (Border Gateway Protocol) running over IPsec for dynamic route propagation
Why this is correct
BGP over IPsec is widely used to dynamically exchange routing updates between on-prem and cloud.
- ✗
HTTP unencrypted proxy forwarding for all cloud packets
Why it's wrong here
HTTP unencrypted proxies do not provide secure transport tunnels.
- ✗
FTP file transfers for packet transmission
Why it's wrong here
FTP is used for file sharing, not secure network tunnel routing.
- ✓
IPsec VPN tunnels using IKEv2 with pre-shared keys or certificates
Why this is correct
IPsec VPN with IKEv2 is the industry standard for secure site-to-site hybrid connections.
- ✗
Telnet remote management sessions across public internet paths
Why it's wrong here
Telnet is unencrypted and insecure for network connections.
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
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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 Palo Alto Networks exam blueprint
This NetSec-Architect practice question is part of Courseiva's free Palo Alto Networks 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 NetSec-Architect exam.