Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions>GraphQL

20 interview questions on GraphQLfor developers (2026)

Test your technical skills before an interview of GraphQL with 20 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
3889
To review
10
20 questions
Easy
1 vote58 runs0 comment

Using inline fragments for different types in GraphQL

IT Architect
Anasat Apr 19, 2024
Easy
1 vote56 runs0 comment

Create a new review and return its details

IT Architect
Anasat Apr 19, 2024
Easy
0 vote61 runs0 comment

What will be the result of this GraphQL query if the user has no posts?

IT Architect
Maxime Javauxat Nov 26, 2024
Easy
0 vote53 runs0 comment

What is the main role of a "resolver" in GraphQL?

IT Architect
functions
Maxime Javauxat Nov 26, 2024
Medium
0 vote52 runs0 comment

How to handle errors in GraphQL?

IT Architect
Anasat Apr 19, 2024
Easy
0 vote52 runs0 comment

GraphQL is a query language for your API.

IT Architect
Anasat Apr 19, 2024
Medium
0 vote52 runs0 comment

What are variables in GraphQL?

IT Architect
Anasat Apr 19, 2024
Easy
0 vote51 runs0 comment

What are the possible types of a GraphQL field?

IT Architect
Anasat Apr 19, 2024
Medium
0 vote50 runs0 comment

What is the role of the schema in GraphQL?

IT Architect
schema
data types
queries
mutations
Maxime Javauxat Nov 26, 2024
Medium
0 vote50 runs0 comment

Write a GraphQL query to get all users with the role USER

IT Architect
Anasat Apr 19, 2024
Easy
0 vote50 runs0 comment

What are the differences between interfaces and unions in GraphQL?

IT Architect
Anasat Apr 19, 2024
Easy
0 vote50 runs0 comment

What is the purpose of interfaces in GraphQL?

IT Architect
Anasat Apr 19, 2024
Easy
0 vote49 runs0 comment

What is a "mutation" in GraphQL?

IT Architect
operations
data
Maxime Javauxat Nov 26, 2024
Easy
0 vote48 runs0 comment

What was the business need that drove Facebook to develop GraphQL?

IT Architect
mobile
optimization
Dragon parfaitat Nov 28, 2024
Easy
0 vote43 runs0 comment

What does a subscription in GraphQL allow you to do?

IT Architect
real-time
updates
Maxime Javauxat Nov 26, 2024
Expert
-1 vote70 runs
3 comments

What is the type of the return value of a GraphQL query?

IT Architect
Anasat Apr 19, 2024
Easy
-1 vote68 runs
1 comment

What is the main advantage of GraphQL over REST?

IT Architect
data
Maxime Javauxat Nov 26, 2024
Easy
-1 vote55 runs
1 comment

What is the response to this GraphQL query?

IT Architect
Maxime Javauxat Nov 26, 2024
Easy
-2 votes51 runs
3 comments

What is a GraphQL schema?

IT Architect
Anasat Apr 19, 2024
Easy
-2 votes50 runs
3 comments

What are variables in GraphQL?

IT Architect
Anasat Apr 19, 2024