1Z0-997-26 High Availability And Disaster Recovery Practice Question
An Oracle Cloud Infrastructure (OCI) architect is designing a high-availability web tier across multiple Availability Domains (ADs) within a single region. Which component should be used to distribute incoming client traffic evenly across web server instances residing in different ADs?
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
✓
An OCI Public Load Balancer configured with backend sets spanning multiple ADs.
An OCI Public Load Balancer is regional, meaning it spans all ADs in a region and can distribute traffic across backend servers located in different ADs, ensuring high availability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
An OCI Dynamic Routing Gateway (DRG) configured with equal-cost multi-path routing.
Why it's wrong here
A DRG connects VCNs to on-premises networks or other regions, not public web clients.
- ✗
A Network Load Balancer restricted to a single Availability Domain subnet.
Why it's wrong here
Restricting the load balancer to a single AD would create a single point of failure if that AD experienced an outage.
- ✗
A primary Local Peering Gateway (LPG) connected to multiple VCNs.
Why it's wrong here
An LPG is used for VCN peering, not for load balancing client traffic.
- ✓
An OCI Public Load Balancer configured with backend sets spanning multiple ADs.
Why this is correct
OCI Load Balancers are regional services capable of balancing traffic across ADs.
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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 1Z0-997-26 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 1Z0-997-26 exam.