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Google Cloud - Apigee Certified API Engineer Exam - Topic 11 Question 14 Discussion

Posted by Golda on Nov 20, 2025 at 09:05 PM

How can we add custom objects to an OpenAPI Specification 2.0?

Suggested Answer: B

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30 comments · newest first
HO
Hollis 6 months ago
C seems off. I’ve never seen ext- used for this purpose.
AL
Allene 6 months ago
I feel confident about A too. It’s widely used in APIs.
BU
Bulah 7 months ago
Definitely not D. A is the right choice.
PR
Princess 7 months ago
I’m not sure. What if it’s D? No custom objects allowed?
BL
Blondell 7 months ago
Yeah, I agree with A. It makes sense for custom objects.
TY
Ty 7 months ago
I think it's A. The x- prefix is common for extensions.
NO
Norah 7 months ago
I thought custom objects were a no-go in 2.0!
CH
Cheryl 8 months ago
I've always used x- too, makes sense!
SH
Shanice 8 months ago
Wait, are you sure D) isn't true?
RO
Rodrigo 8 months ago
Totally agree, x- is the way to go!
WI
Willodean 8 months ago
A) is correct, you use x- for custom objects.
VA
Vanesa 9 months ago
A) By prefixing x- before the name of the custom object. Easy peasy!
AN
Anastacia 9 months ago
D) Open API specification does not allow custom objects. Wait, what? I thought we could do anything with APIs these days!
PA
Pansy 9 months ago
C) By prefixing ext- before the name of the custom object
TR
Truman 9 months ago
I feel like the x- prefix is correct, but I also remember something about c- and ext- prefixes from another practice question.
MA
Margarita 9 months ago
I thought OpenAPI 2.0 didn't allow for custom objects at all, but maybe I misread that section in the notes.
SI
Silvana 9 months ago
I remember practicing a question about OpenAPI where we had to identify custom fields, and I feel like it was definitely the x- prefix.
LA
Lashawnda 10 months ago
I think we can add custom objects by using the x- prefix, but I'm not entirely sure if that's the only way.
SA
Salome 10 months ago
Okay, I think I've got this. The key is to use the x- prefix for any custom objects you want to add to the OpenAPI spec. Options B and C are not correct.
RO
Royce 10 months ago
A) By prefixing x- before the name of the custom object
NO
Nobuko 10 months ago
Ah, I remember learning about this in class. I'm pretty sure the answer is A - we prefix custom objects with x- to distinguish them from the standard OpenAPI elements.
CO
Corrinne 11 months ago
I'll just go with C) By prefixing ext- before the name of the custom object. Sounds more professional.
SE
Selene 11 months ago
I'm a bit confused by this question. I know OpenAPI has some flexibility for custom extensions, but I can't recall the specific syntax. I'll have to review my notes to be sure.
DU
Dulce 11 months ago
Hmm, I'm not entirely sure about this one. I know OpenAPI has some rules around custom objects, but I can't remember the exact prefix to use. I'll have to think this through carefully.
TO
Tonette 11 months ago
This looks like a straightforward question about OpenAPI Specification 2.0. I'm pretty confident I know the answer.
JE
Jesusita 6 months ago
↳ replying to Tonette
A is definitely the right choice!
JO
Jolanda 6 months ago
↳ replying to Tonette
D seems wrong too. Custom objects are allowed.
MA
Marleen 6 months ago
↳ replying to Tonette
No way, I thought it was C.
SA
Sabine 6 months ago
↳ replying to Tonette
Yeah, I agree with you, Allene.
AL
Allene 10 months ago
↳ replying to Tonette
I think it's A! You just need to prefix with x-.
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