1Z0-027 · Question #102
Which of the following scalability options are supported?
The correct answer is A. Upgrading a Quarter Rack Database Machine to a Half Rack Database Machine B. Upgrading a Half Rack Database Machine to a Full Rack Database Machine D. Interconnecting two or more Full Rack Database Machines. Interconnecting two or more Full Rack Database Machines
Question
Which of the following scalability options are supported?
Options
- AUpgrading a Quarter Rack Database Machine to a Half Rack Database Machine
- BUpgrading a Half Rack Database Machine to a Full Rack Database Machine
- CInterconnecting two Quarter Rack Database Machines
- DInterconnecting two or more Full Rack Database Machines
How the community answered
(38 responses)- A76% (29)
- C24% (9)
Explanation
Interconnecting two or more Full Rack Database Machines
Topics
Community Discussion
5
Wesley A.Mar 31, 2026A, B, and D are correct. Oracle Exadata lets you scale up by upgrading smaller rack configurations to larger ones (Quarter to Half, Half to Full), and you can also scale out by interconnecting two or more Full Rack machines, but interconnecting two Quarter Rack machines is not a supported configuration, which is the trap on option C.
Carlos M.Apr 2, 2026Good catch on C, and worth drilling into your notes that the scale-out via InfiniBand interconnect is specifically a Full Rack to Full Rack operation, which is exactly the kind of precise wording Oracle loves to test on.
Carlos M.Apr 7, 2026C for me, the exam guide specifically calls out interconnecting two Quarter Rack machines as a supported scale-out path and that fits the whole point of Exadata's grid architecture. The upgrade options in A and B sound plausible but I kept seeing "interconnect" as the keyword in the official docs when they talk about scaling.
Wesley A.Apr 10, 2026Carlos, the interconnect keyword threw me off on my first attempt too, but A, B, and D are correct because Exadata scale-out is specifically about adding database servers, adding storage servers, or expanding to additional rack units within the same system, and connecting two separate Quarter Rack machines is not a supported configuration for scaling a single Exadata system.
Yusuf A.Apr 2, 2026I was almost certain C was in there because my senior Marcus always talks about clustering smaller nodes together to scale out, so I figured two Quarter Racks would work the same way. Then I went back and looked at the Exadata configuration guides and realized Quarter Rack and Half Rack machines can only scale by upgrading to a larger rack, not by linking two of them together side by side. Option C is actually not a supported path at all. The interconnection story only kicks in once you are at Full Rack, where you can link two or more of them using the InfiniBand expansion ports, which is what makes D correct alongside A and B. Basically the rule I wrote down is: small racks grow up, big racks grow out.