mediumMultiple ChoiceObjective-mapped
PCNSA Practice Question: Expanding its network and needs to add a new data…
A company is expanding its network and needs to add a new data center. The two data centers will be connected via a WAN link. To protect the traffic between data centers, the security team wants to use site-to-site VPNs. Which Palo Alto Networks feature is used to route traffic between VPN tunnels and security zones?
⚠ Common exam trap
Many exam-takers confuse security policies with routing decisions, mistakenly thinking that policies control traffic flow between zones, when in fact virtual routers handle the actual Layer 3 forwarding and path selection between VPN tunnels and security zones.
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
✓
Virtual routers
Virtual routers are the correct feature because they function as Layer 3 routing instances within Palo Alto Networks firewalls, enabling the routing of traffic between VPN tunnels (which terminate on tunnel interfaces) and security zones. When a site-to-site VPN is configured, the tunnel interface is assigned to a virtual router, which then uses static or dynamic routing protocols (e.g., BGP, OSPF) to forward traffic between the tunnel and the zone's egress interface. This allows the firewall to make forwarding decisions between the encrypted VPN path and the protected internal network segments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Virtual routers
Why this is correct
Virtual routers handle routing and can direct traffic into and out of VPN tunnels.
- ✗
Virtual wires
Why it's wrong here
Virtual wires are for transparent Layer 2 deployments, not routing.
- ✗
Security policies
Why it's wrong here
Security policies enforce rules but do not perform routing.
- ✗
Interface management profiles
Why it's wrong here
Management profiles control access to management functions, not routing.
Visual reference
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.
Go deeper
Related to this question
About these practice questions
This PCNSA question is part of Courseiva's 516-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 by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSA 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 PCNSA exam.