1Z0-997-26 High Availability And Disaster Recovery Practice Question
You are performing maintenance on an OCI Load Balancer backend set. You want to temporarily stop sending traffic to a specific backend server without immediately dropping active persistent connections. What feature should you use?
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
✓
Enable Connection Draining on the backend server.
Draining allows a load balancer to stop sending *new* requests to a backend server while allowing existing persistent connections to complete gracefully.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set the backend server weight to zero without enabling draining.
Why it's wrong here
Weight zero stops new connections, but connection draining is specifically designed to manage existing active connections gracefully.
- ✗
Delete the backend server from the backend set immediately.
Why it's wrong here
Deleting immediately terminates active connections, causing errors for clients.
- ✓
Enable Connection Draining on the backend server.
Why this is correct
Connection draining finishes ongoing requests before taking the backend server offline.
- ✗
Modify the security list to drop all TCP packets on port 443.
Why it's wrong here
Dropping packets via security lists abruptly cuts off connections rather than draining gracefully.
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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
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