Do you have your node js web development company? And are you seeking a professional NodeJS developer? If yes, then you have stopped at the right place. Before selecting a developer, you need to ask a few questions which are mentioned below. Node.JS developer is wholly responsible to manage the interchange of data between the users and server. The role of the developer is to develop and maintain all the server-side network components. Apart from this, it ensures the excellent performance of the central database.
Let’s check the few questions that are mandatory to ask before hire NodeJS Developer.
Questions to ask Before Hiring NodeJS Developer
Ques 2- Explain Node.JS
Ques 3- Tell the benefits of using Node.JS
- The particular framework based server does not wait for an API to return data. In such a case it is asynchronous.
- Node.JS is said to be extremely scalable because of its event mechanism.
- Node.js applications do not buffer any data.
Ques 4- What is the difference between Angular and Node.js
|1. Angular is said to be an open source web application development framework||1. Node.js is a cross-platform run-time environment for apps|
|3. It is specifically used to build single-page client-side web applications||3. You can use it to build quick and scalable server-side networking applications|
|4. It is itself a web appframework||4. It has many frameworks such as Sails.js, Partial.js, and Express.js, etc.|
|5. Angular is perfect option to create highly active and interactive web apps||5. Node.js is ideal for developing small size projects for your business.|
|6. It is perfect for developing real-time applications||7. Node.js is used when something faster and more scalable is needed|
Ques 5- How exactly does Node.js support a multi-processor platform?
Ans- Node.js is already by default a single thread app. The framework will run on a single processor core. Besides, it will not take full benefit of multiple core resources. Thus, Node.js offers support for deployment on multiple-core systems.
Ques 6- Tell me what do you understand by Reactor Pattern in Node.js?
Ans- It is a concept of non-blocking I/O operations. This pattern offers a handler that is linked with each I/O operation. Also, as soon as an I/O request is generated, it gets submitted to a demultiplexer. Now, the demultiplexer is said to be a notification interface that is able to handle concurrency in non-blocking I/O mode.
Ques 7- What are the main differences between Front-end Development and Back-end Development?
|Front-end Development||Back-end Development|
|It is mainly based on asynchronous requests and AJAX||Back-end development is based on server architecture|
|It gives better accessibility||It helps in enhancing security|
|Front-end is used for SEO||It is used for Backup|
Ques 8- What is Libuv?
Ans- It is a multi-platform support library of Node.js which is mainly used for asynchronous I/O. Earlier it was developed for Node.js. As time passes by it is practiced with other systems such as pyuv, Luvit, etc. It is an abstraction around libev/ IOCP depending on the platform.
Ques 9- Explain the working of the control flow function.
Ans- In Node.js framework, the control flow function is generally the code that is executed between your asynchronous function calls.
Here are the steps of executing it:
- First, the order of execution needs to be controlled.
- After that, the needed data needs to be collected.
- Now, the concurrency must be restricted.
- Finally, the program has to be invoked.
Ques 10- Explain test pyramid.
Ans- The test pyramid is developed by Mike Cohn. You need to have a higher number of low-level unit tests if you compare to high-level end-to-end tests.
Ques 11- What is the purpose of module.exports?
Ans- It is used to compress all the related codes that too into a single unit of code. It can be interpreted via shifting all correlated functions into a single file.
Ques 12- Why Google uses V8 engine for Node.js?
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