Even though a website's or mobile app's backend may have been written in a specific language, the concepts that underlie a backend server are the same. If you are hiring a backend developer, you must certainly test this skill.
At Equip, we test a candidate's webserver skills with a quiz. The quiz questions centre around HTTP requests, scaling, REST APIs, etc
Sample Questions
What Medium, Hard and Expert difficulties mean.
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1 pointHTTPS Default Port
1 pointUber App Backend Architecture
2 pointsLoad Balancer Setup
2 pointsDatabase for Content-Heavy Site
2 pointsForm Data: 400 Error Cause
3 pointsCDN Benefits
3 pointsHTTP 405 Meaning
3 pointsInadequate REST APIs
4 pointsFTP Server Interaction Overview
4 points