GraphQL

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GRAPHQL

ASSESSMENT

(YOU HAVE ONLY 30 MINUTES TO COMPLETE THIS PART [20 Questions])

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1. Which of the following is a valid GraphQL query syntax?

{ name: "John" }

query { name: "John" }

query { user(name: "John") }

{ query: { name: "John" } }

2. What does the term "N+1 problem" refer to in the context of GraphQL?

A query with multiple nested fields

Inefficient loading of related data in a batch

A security vulnerability

Lack of proper documentation

3. How can you secure a GraphQL API?

By using HTTPS for communication

By implementing authentication and authorization

By limiting the depth and complexity of queries

All of the above

4. In GraphQL, what is the purpose of directives?

To define custom scalar types

To conditionally include or skip fields

To create mutations

To specify the schema version

5. Which of the following is a valid scalar type in GraphQL?

Date

Object

Function

Promise

6. How can you document a GraphQL schema?

Using comments in the schema definition

By creating a separate documentation file

By using the @doc directive

Documentation is not supported in GraphQL

7. In GraphQL, what is a schema?

A type of database

A query

A way to structure data

A programming language

8. What is GraphQL?

A database management system

A programming language

A query language for APIs

An operating system

9. What is the purpose of the introspection in GraphQL?

To improve query performance

To provide documentation about the schema

To validate queries at runtime

To enforce security measures

10. What is the role of the subscriptions field in a GraphQL schema?

To define the types of subscriptions supported by the API

To specify the default values for subscription parameters

To control access permissions for subscriptions

To indicate the version of the GraphQL schema

11. What is the purpose of the fragment keyword in GraphQL?

To define a reusable piece of a query

To group multiple queries together

To define a new scalar type

To include comments in a query

12. What is the purpose of the @skip and @include directives in GraphQL?

To exclude or include fields based on a condition

To define custom scalar types

To perform mathematical calculations in queries

To specify default values for query parameters

13. What is the default query type in GraphQL?

Query

Get

Retrieve

14. Which type of operation in GraphQL is used for real-time data updates?

Query

Mutation

Subscription

Directive

15. Which of the following is a valid way to provide variables in a GraphQL query?

{ variable: "value" }

$variable: "value"

variable = "value"

variable: "value"

16. What is the purpose of the enum type in GraphQL?

To represent a field that can have multiple types

To define a one-to-many relationship between types

To create a subset of the schema

To represent a set of predefined values

17. Who developed GraphQL?

Facebook

Google

Microsoft

Twitter

18. What is the purpose of the fragments keyword in a GraphQL query?

To define a reusable piece of a query

To group multiple queries together

To include comments in a query

To exclude certain fields from the response

19. What is a resolver in GraphQL?

A function that defines how to retrieve data for a field

A type of query

A security measure

A data validation rule

20. What is the purpose of the union type in GraphQL?

To represent a field that can have multiple types

To perform set operations on queries

To define a one-to-many relationship between types

To create a subset of the schema

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