Saturday, January 28, 2012

Developer interview questions

A while back I had to interview some people for a developer role at work so came up with a few questions, combining a few from the web with some of my own. This is essentially a note to myself for next time I’m interviewing.

What's a jQuery selector? How would you select an item by its ID? By its class?
Give some examples of JQuery UI effects and widgets and what they could be used for

What's an interface? Compare and contrast with an abstract class
How does memory management differ between .NET and a non-managed language? How can we make .NET behave more like a non-managed language?
What are generics? Why use List<> instead of ArrayList?
What's a virtual function? How does it relate to OOP?

What is a RESTful web service? Why are they preferred to SOAP web services?
What are the common data formats returned by an AJAX web service call? Is one better than the other? What about if you wanted to call it from a fat client?
Name and describe several HTTP status codes
Name the various HTTP verbs and when they are used

Your application has a performance problem, how would you investigate the issue?
An error occurs in your web application but only in production and only happens occasionally, how do you go about tracking down the problem?
What are some of the issues around multi-threaded applications?
Discuss some ways of ensuring code quality remains high in a project

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