1Z0-1072-26 Networking Practice Question
Which THREE components are required when establishing a Site-to-Site VPN connection between your on-premises datacenter and an OCI VCN?
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
✓
IPSec Connection between the CPE and the DRG
A Site-to-Site VPN requires a Customer-Premises Equipment (CPE) object representing your gateway, a Dynamic Routing Gateway (DRG) attached to your VCN, and an IPSec Connection containing tunnels configured with static or dynamic routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Internet Gateway attached to the private subnets
Why it's wrong here
Site-to-Site VPN traffic traverses the DRG, not an Internet Gateway.
- ✓
IPSec Connection between the CPE and the DRG
Why this is correct
The IPSec Connection binds the CPE and DRG together and establishes encrypted tunnels.
- ✗
Local Peering Gateway (LPG)
Why it's wrong here
LPGs are used for VCN-to-VCN peering, not on-premises VPN connections.
- ✓
Dynamic Routing Gateway (DRG) attached to the VCN
Why this is correct
The DRG is the VCN endpoint for all hybrid connections including IPSec VPNs.
- ✓
Customer-Premises Equipment (CPE) object in OCI
Why this is correct
The CPE object represents your on-premises router's public IP address in OCI.
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.
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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 Oracle exam blueprint
This 1Z0-1072-26 practice question is part of Courseiva's free Oracle 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 1Z0-1072-26 exam.