Beginner Node.js Interview Questions

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Beginner Node.js Interview Questions

[{"selector":"#anim-1329728f-ecb4-4cfe-97e2-97bde0f1e2b2 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-5d83e94c-50ac-4c57-b1a0-a689155d72d9","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e434d9ed-e7e4-4db4-ba67-f17bf3d7b833","keyframes":{"transform":["translate3d(0px, 567.41374%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a5497d91-3220-4184-9917-6c5e8c187b7b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8c8f852a-678c-45ac-bcb8-4061d9498e79","keyframes":{"transform":["translate3d(0px, 229.70909%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Node.js, a powerful JavaScript execution environment, has gained enormous popularity for creating scalable and efficient server-side applications.

Beginner Node.js Interview Questions

[{"selector":"#anim-17ecb1da-2811-4c79-833d-ba47facd500e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-082052b6-ccd0-46fe-8fc5-6f8716e9f674","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-43317697-1d19-4215-93a9-92a6ba5d6e39","keyframes":{"transform":["translate3d(0px, 567.41374%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b661364c-d7f3-4b4e-bf37-a4ad0a1b2a16","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-605bbc38-3712-499d-8ee0-06e0b3736f8c","keyframes":{"transform":["translate3d(0px, 230.56744%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] If you're a beginner looking to start your career in Node.js development,it's important to be well-prepared for Node.js interview questions.

Beginner Node.js Interview Questions

[{"selector":"#anim-ca301ab4-e1d8-479a-9a4a-0bb3695eedb9 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b91ed3d0-8965-4bda-a422-14664eca0eb5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cf23919f-fe7e-4384-8203-f3d7b34b90a1","keyframes":{"transform":["translate3d(0px, 567.41374%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6fa03428-b28b-4a07-966d-6fa3bd2346e0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c1705573-083a-4c86-9cc9-859f31a3f43b","keyframes":{"transform":["translate3d(0px, 180.34188%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] In this publication, we've put together a comprehensive collection of Node.js interview questions for beginners that will test your understanding of basic concepts and best practices.

1. What is a first class function in Javascript?

[{"selector":"#anim-2232b15e-380f-4860-ba45-a2ab3727c07c [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-1c744562-0caf-47cb-8bf7-787aeaca4593","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f28fec21-06c5-4a6b-a8d6-bad0c737c6c4","keyframes":{"transform":["translate3d(0px, 287.24010%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

2. What is Node.js and how it works?

[{"selector":"#anim-4198404e-a2ee-49a7-9e02-d2eb908164e4 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-df9c4e5d-1f6e-44b8-89b1-4824ce850652","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d33be53b-0c8e-42ee-b036-38f05cd59dc7","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

3. How do you manage packages in your node.js project?

[{"selector":"#anim-1bec62d4-aac3-4591-92be-7372e9d2eb28 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b7e7627d-140a-49f7-af9a-2573b4518777","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-50a1af74-1ea3-4958-b518-1b763295f6e2","keyframes":{"transform":["translate3d(0px, 234.85376%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

4. How is Node.js better than other frameworks most popularly used?

[{"selector":"#anim-f7583226-d58a-44a7-a8e5-44126dae8181 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-6f3f9634-d712-436b-960c-8effd5b62912","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-891a432e-d892-4015-8c14-a68645c46831","keyframes":{"transform":["translate3d(0px, 236.43272%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

5. Explain the steps how “Control Flow” controls the functions calls?

[{"selector":"#anim-bfe5705a-05c2-4d3a-afc0-f4b1330c9e80 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-5a08a89e-c4aa-4f6f-b7d5-214edb59cb0a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0da19c90-3a30-4502-a4cf-6b9f28ba84ff","keyframes":{"transform":["translate3d(0px, 236.43272%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

6. What are some commonly used timing features of Node.js?

[{"selector":"#anim-84f2bf41-8009-41ac-a09a-29f723b1077a [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-04acb017-06d8-446d-bcd6-24effe56f64e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-057116a9-96e3-4a91-8087-eab03d5c70a8","keyframes":{"transform":["translate3d(0px, 237.48537%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

7. What are the advantages of using promises instead of callbacks?

[{"selector":"#anim-031c589b-b7bd-4092-83ee-26a0a006afad [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-c1eef3b6-646b-4a03-8fc5-5e6e22751d24","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ffb1200f-019c-4f60-bcb5-ce9453a20a73","keyframes":{"transform":["translate3d(0px, 238.53799%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

8. What is fork in node JS?

[{"selector":"#anim-83a21949-709d-47c1-83b0-bf2d5937dd68 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-ad2c2948-c0ed-4882-b23e-326601fb85ca","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e8d03b9e-39d0-4e3a-8e1c-debc5d59fb0a","keyframes":{"transform":["translate3d(0px, 380.85908%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

9. Why is Node.js single-threaded?

[{"selector":"#anim-4793b10f-3842-413f-9714-0789bbe93ea3 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-5d6b2558-2b8d-4e7a-8ecf-dd11f51d925d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-386e7d90-e4c3-4abf-9155-4bf4d53c4099","keyframes":{"transform":["translate3d(0px, 380.85908%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

10. How do you create a simple server in Node.js that returns Hello World?

[{"selector":"#anim-e33feba5-5dc5-4b50-ab16-f246073fc460 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-10f4f403-a228-4a11-adfa-7d6ffb0ad4d5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0fc71c9e-e418-48e9-a986-1600c3c4eedb","keyframes":{"transform":["translate3d(0px, 202.32096%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

11. How many types of API functions are there in Node.js?

[{"selector":"#anim-63f4e56b-6e81-4f7f-8770-dbf3ba396543 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-cff61ab3-adb6-4b8f-a5a2-146128c3e846","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7b753efc-68d8-4a87-aca4-06f043707c8b","keyframes":{"transform":["translate3d(0px, 293.69170%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

12. What is REPL?

[{"selector":"#anim-ebb737bd-d776-4af9-8208-dad85af28e8c [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-9823ea16-e84f-4c73-9cae-751bde0bcb3b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-17bf6ccf-3d0f-41ba-bb79-7d3675c8a9d5","keyframes":{"transform":["translate3d(0px, 537.90833%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

13. List down the two arguments that async.queue takes as input?

[{"selector":"#anim-c56d8b51-3c7e-4c57-930c-03ff63374536 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-54d4c3ff-b4b5-4c2c-8c02-5dff5b5d7667","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9af44066-c4d2-46ef-9fc2-3b2f69504d03","keyframes":{"transform":["translate3d(0px, 240.64325%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

14. What is the purpose of module.exports?

[{"selector":"#anim-a4e69a8a-a727-4fba-8c21-2267561c96b3 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-007e113a-5064-4e0c-a265-ffad20bf2f34","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cb6ad3ec-44c1-47c9-ac10-99808f8b90f6","keyframes":{"transform":["translate3d(0px, 297.56269%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

15. What tools can be used to assure consistent code style?

[{"selector":"#anim-ebc32b4e-e651-4330-91d8-0df3bcc62e79 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-c7be35f1-1145-447e-b21d-4de00158802a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bab764de-3565-4b7e-8c6a-d9c28dd7e2e7","keyframes":{"transform":["translate3d(0px, 244.32748%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

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[{"selector":"#anim-132a8498-9142-4fd1-9c97-26e4233e465f","keyframes":{"opacity":[0,1]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-82e8589a-1e54-404e-9f9f-26196255c454","keyframes":{"transform":["translate3d(-126.33136%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4fa74330-1cfa-4d95-a9d7-2840e3a43157","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-fd9c4651-6f81-4ff1-9e4d-e6cb4cf61698","keyframes":{"transform":["translate3d(-120.51283%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5670175a-e411-4afd-bbb4-83e55d1ff504","keyframes":{"opacity":[0,1]},"delay":200,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bcca50f0-be26-4ca2-af0a-360169770421","keyframes":{"opacity":[0,1]},"delay":300,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-57a31c53-6d44-4353-b5c2-f42966dd0faa","keyframes":{"opacity":[0,1]},"delay":400,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e488bd69-d333-484e-bd37-8fc46bdaf632","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b4ee5352-9873-4fee-9e07-06bb0b5858af","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dbfa2716-5178-4afd-a1f2-3d9d8927cd8f","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Learn more

Beginner Node.js Interview Questions

Beginner Node.js Interview Questions

Beginner Node.js Interview Questions

Beginner Node.js Interview Questions

1. What is a first class function in Javascript?

2. What is Node.js and how it works?

3. How do you manage packages in your node.js project?

4. How is Node.js better than other frameworks most popularly used?

5. Explain the steps how “Control Flow” controls the functions calls?

6. What are some commonly used timing features of Node.js?

7. What are the advantages of using promises instead of callbacks?

8. What is fork in node JS?

9. Why is Node.js single-threaded?

10. How do you create a simple server in Node.js that returns Hello World?

11. How many types of API functions are there in Node.js?

12. What is REPL?

13. List down the two arguments that async.queue takes as input?

14. What is the purpose of module.exports?

15. What tools can be used to assure consistent code style?

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