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Online GraphQL Test - Pre-Employment Skill Assessment

Programming Language
10 min
GraphQL online testMobile GraphQL skill assessment

What is the test about?

This GraphQL test measures candidates' knowledge and proficiency in GraphQL, the powerful data manipulation and query language for APIs, and their understanding of its performance characteristics.

Covered skills

Building, Validating, and Executing GraphQL Queries
Define Schemas and Resolve Functions
Use of GraphQL Tools like GraphiQL
Understanding of error handling, concurrency, and zero downtime migration with GraphQL

Test creator

Test creator
Waldemar Krasowski
Senior Software Engineer at Telekom
With a decade-long experience at Deutsche Telekom, Waldemar Krasowski has honed his skills as a Senior Software Engineer, excelling in the use of Linux, Python, FastAPI, and more. Known for his expertise in creating and maintaining restful MicroServices and his proficiency in ensuring service security and performance, Waldemar's adept manipulation of technologies and systems illustrates a distinct flare for efficient process management and productive team leadership.

Who should take this test?

Back-End Developer, Full-Stack Developer, Software Developer, Web Developer

Description

GraphQL is a query language for APIs and a runtime for executing those queries with your existing data. Created by Facebook, GraphQL offers increased flexibility by allowing clients to define the structure of response data. This makes developing applications based on multiple data sources more straightforward and reduces the amount of data that needs to be transferred over the network.

This GraphQL test evaluates candidates on their knowledge and understanding of building, validating and executing GraphQL queries. It also assesses their ability to define schemas and resolve functions. Other areas this test cover includes the use of GraphQL tools, such as GraphiQL, and understanding of how GraphQL deals with concurrency, error handling, and zero downtime migration.

Candidates who perform well on this test will have demonstrated their ability to effectively use GraphQL's powerful set of features to produce application-based solutions. Their understanding of how GraphQL can optimize data fetching will translate to applications that are efficient, flexible, and robust.

Overview

Programming Language
10 min
Building, Validating, and Executing GraphQL Queries
Define Schemas and Resolve Functions
Use of GraphQL Tools like GraphiQL
Understanding of error handling, concurrency, and zero downtime migration with GraphQL

Test creator

Test creator
Waldemar Krasowski
Senior Software Engineer at Telekom
With a decade-long experience at Deutsche Telekom, Waldemar Krasowski has honed his skills as a Senior Software Engineer, excelling in the use of Linux, Python, FastAPI, and more. Known for his expertise in creating and maintaining restful MicroServices and his proficiency in ensuring service security and performance, Waldemar's adept manipulation of technologies and systems illustrates a distinct flare for efficient process management and productive team leadership.