SSE-Engineer Prisma Access Services Practice Question
An enterprise is planning a Prisma Access deployment and wants to optimize performance and redundancy for Remote Networks. Which THREE best practices should the network architect follow when designing IPsec connections to Prisma Access? (Choose three)
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
✓
Configure redundant IPsec tunnels from separate CPE devices or diverse ISP connections to Prisma Access.
Best practices for Remote Networks include configuring redundant tunnels, enabling BGP for dynamic routing, and selecting appropriate MTU/MSS settings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable Dead Peer Detection (DPD) to keep tunnels permanently active.
Why it's wrong here
DPD should be enabled to detect dead tunnels and trigger rapid failover.
- ✓
Configure redundant IPsec tunnels from separate CPE devices or diverse ISP connections to Prisma Access.
Why this is correct
Redundant tunnels ensure high availability in case of ISP or CPE failure.
- ✓
Configure MSS clamping on the CPE routers to prevent fragmentation over IPsec tunnels.
Why this is correct
MSS clamping ensures TCP packets fit within the IPsec tunnel MTU without fragmentation issues.
- ✗
Use OSPF area 0 across all IPsec tunnels to establish fast convergence.
Why it's wrong here
OSPF is not supported over Prisma Access IPsec tunnels.
- ✓
Implement BGP dynamic routing over the IPsec tunnels for automated failover.
Why this is correct
BGP enables fast convergence and route failover between redundant tunnels.
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 SSE-Engineer 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 SSE-Engineer exam.