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

Actual exam question for Google's Google Cloud - Apigee Certified API Engineer exam

Question #: 14
Topic #: 11

[All Google Cloud - Apigee Certified API Engineer Questions]

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

ABy prefixing x- before the name of the custom object

BBy prefixing c- before the name of the custom object

CBy prefixing ext- before the name of the custom object

DOpen API specification does not allow custom objects

Show Suggested Answer

Suggested Answer: B

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

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Hollis

5 months ago

C seems off. I’ve never seen ext- used for this purpose.

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Allene

5 months ago

I feel confident about A too. It’s widely used in APIs.

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Bulah

5 months ago

Definitely not D. A is the right choice.

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Princess

5 months ago

I’m not sure. What if it’s D? No custom objects allowed?

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Blondell

5 months ago

Yeah, I agree with A. It makes sense for custom objects.

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Ty

6 months ago

I think it's A. The x- prefix is common for extensions.

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Norah

6 months ago

I thought custom objects were a no-go in 2.0!

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Cheryl

6 months ago

I've always used x- too, makes sense!

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Shanice

7 months ago

Wait, are you sure D) isn't true?

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Rodrigo

7 months ago

Totally agree, x- is the way to go!

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Willodean

7 months ago

A) is correct, you use x- for custom objects.

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Vanesa

7 months ago

A) By prefixing x- before the name of the custom object. Easy peasy!

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Anastacia

7 months ago

D) Open API specification does not allow custom objects. Wait, what? I thought we could do anything with APIs these days!

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Pansy

7 months ago

C) By prefixing ext- before the name of the custom object

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Truman

8 months ago

I feel like the x- prefix is correct, but I also remember something about c- and ext- prefixes from another practice question.

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Margarita

8 months ago

I thought OpenAPI 2.0 didn't allow for custom objects at all, but maybe I misread that section in the notes.

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Silvana

8 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.

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Lashawnda

8 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.

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Salome

8 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.

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Royce

9 months ago

A) By prefixing x- before the name of the custom object

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Nobuko

9 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.

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Corrinne

9 months ago

I'll just go with C) By prefixing ext- before the name of the custom object. Sounds more professional.

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Selene

9 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.

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Dulce

9 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.

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Tonette

10 months ago

This looks like a straightforward question about OpenAPI Specification 2.0. I'm pretty confident I know the answer.

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Jesusita

4 months ago

A is definitely the right choice!

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Jolanda

4 months ago

D seems wrong too. Custom objects are allowed.

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Marleen

4 months ago

No way, I thought it was C.

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Sabine

5 months ago

Yeah, I agree with you, Allene.

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Allene

8 months ago

I think it's A! You just need to prefix with x-.

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