1Z0-1085-26 Core Oci Services Practice Question
Which TWO of the following networking components are required to configure a working site-to-site IPsec VPN connection to an OCI VCN? (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
✓
Customer Premises Equipment (CPE) object
An IPsec VPN connection requires a Customer Premises Equipment (CPE) object representing the on-premises router and a Dynamic Routing Gateway (DRG) attached to the VCN.
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 database subnet
Why it's wrong here
Internet Gateways are for public internet traffic, not IPsec VPN termination.
- ✓
Customer Premises Equipment (CPE) object
Why this is correct
A CPE object represents the public IP address of the on-premises VPN device.
- ✗
Local Peering Gateway peered with another VCN
Why it's wrong here
Local Peering Gateways connect VCNs, not VPN tunnels.
- ✗
NAT Gateway for IP translation of VPN packets
Why it's wrong here
VPN tunnels route native IP packets without needing a NAT Gateway.
- ✓
Dynamic Routing Gateway (DRG)
Why this is correct
A DRG is attached to the VCN to terminate the VPN tunnel.
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 Oracle exam blueprint
This 1Z0-1085-26 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 1Z0-1085-26 exam.