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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Cheryl

9 hours ago

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

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Shanice

6 days ago

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

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Rodrigo

11 days ago

Totally agree, x- is the way to go!

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Willodean

16 days ago

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

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Vanesa

21 days ago

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

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Anastacia

26 days 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

1 month ago

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

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Truman

1 month 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

1 month 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

2 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

2 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

2 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

2 months ago

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

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Nobuko

2 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

3 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

3 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

3 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

3 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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Allene

2 months ago

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

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