1Z0-1085-26 Core Oci Services Practice Question
To ensure high availability for your web application, you should deploy your instances across:
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
✓
Different Availability Domains
Deploying across different availability domains (ADs) or fault domains (FDs) is best practice for HA.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A single VCN
Why it's wrong here
A single VCN doesn't define physical hardware redundancy.
- ✗
The same subnet
Why it's wrong here
Subnets are logical, not physical, divisions.
- ✓
Different Availability Domains
Why this is correct
Spanning ADs protects against entire data center failures.
- ✗
A single Fault Domain
Why it's wrong here
A single FD is a single point of failure.
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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.