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 NOT a scalar type in GraphQL?

String

Int

List

Boolean

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

{ variable: "value" }

$variable: "value"

variable = "value"

variable: "value"

3. How can you perform batching of queries in GraphQL?

By using the @batch directive

By wrapping multiple queries in a single request

By specifying a batch size in the schema

Batching is not supported in GraphQL

4. What is the purpose of the @client directive in GraphQL?

To indicate that the field should be resolved on the client side

To specify the data type of a field

To mark a field as deprecated

To include comments in a query

5. What is the purpose of the schema stitching in GraphQL?

To merge multiple GraphQL schemas into a single schema

To split a large schema into smaller schemas

To create a schema dynamically at runtime

To validate the schema against a predefined standard

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

Query

Mutation

Subscription

Directive

7. Who developed GraphQL?

Facebook

Google

Microsoft

Twitter

8. 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

9. What is the role of the context in GraphQL resolvers?

It defines the structure of the schema

It provides a way to share information between resolvers

It specifies the data types of fields

It controls the access permissions

10. 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

11. How does GraphQL handle batched mutations?

By executing mutations sequentially

By parallelizing the execution of mutations

By limiting the number of mutations in a single request

Batched mutations are not supported in GraphQL

12. How does GraphQL handle circular references in a schema?

By automatically resolving the circular references

By throwing an error and preventing circular references

By requiring the use of custom directives to handle circular references

Circular references are not allowed in GraphQL

13. Which of the following is a valid GraphQL subscription operation?

subscribe { newMessages }

mutation { subscribe(newMessages) }

query { subscribe(newMessages) }

subscription { onNewMessage }

14. 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

15. 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

16. How does GraphQL handle versioning of APIs?

It automatically updates the schema based on client requests

It relies on the use of custom directives for versioning

It uses a fixed schema with backward-compatible changes

It does not support versioning

17. Which of the following is a reserved keyword in GraphQL?

select

query

fetch

retrieve

18. What is the purpose of the relay package in GraphQL?

To handle pagination and connections in a standardized way

To provide authentication for GraphQL queries

To optimize query performance

To enable offline support for GraphQL queries

19. How does GraphQL handle errors in a response?

By ignoring errors and returning partial data

By automatically fixing errors in the query

By returning a well-defined error format

By terminating the entire request on the first error

20. What is a mutation in GraphQL?

A query that fetches data

A query that modifies data

A type of subscription

A way to create new schemas

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