Why we have to keep separate express app and server?
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Why is npm used?
Describe the exit codes of node.js.
Why do we use __filename in Node.js?
How we can update npm to new version in node.js?
What is socket.io in node.js?
What is orm in node.js?
What are the fundamental difference between node.js and ajax?
What are the purposes of console object in node.js?
Differentiate between process.nexttick() and setimmediate()?
Is node js synchronous or asynchronous?
What do you understand by middleware?
What is the difference between spawn and fork?