Feeling anxious about answering full-stack developer interview questions? You’re not alone. Even the best of them feel the heat at times as they prepare for an interview, especially if it’s their first time. A full-stack developer is one of the most lucrative and in-demand gigs in the IT sector, whose market in India is only growing. Consider this blog as one of the best placement preparation courses with the best interview tips.
Before we get to the interview preparation stage, let’s start with the role of a full-stack developer.
Who is a full-stack developer?
A full-stack developer oversees a web or mobile app’s back-end and front-end. The database, clients, system engineering, and design all fall under their wings of influence. Owing to their talents and expertise in web development, full-stack developers are in high demand.
Furthermore, the role of full-stack developers includes responsibilities for the web stack, native application stack, or mobile stack. Full-stack developers lead the plan of action and maintain track of the project’s progress because they are involved in both server and client-side development.
Now that we covered that, let’s go through some full-stack developer interview questions (and answers!) and some of the best interview tips to keep in mind:
- Which are your favourite coding languages and libraries?
Aside from providing knowledge about which coding languages you know, it gives the interviewer insight into which areas of computer technology and development you ideally prefer or are more comfortable with. A full-stack developer is often well-versed with the following:
- Web API
- What are the most important qualities that a full-stack developer must have?
Aside from the aforementioned coding languages, here are a few prerequisites you must know before appearing for a full-stack developer interview:
- SQL SERVER
- What is pair programming? Have you ever done it?
One of the fundamental features of extreme programming is pair programming, which involves two developers working on the same terminal. The “driver” is responsible for entering the codes, while the “navigator” is in charge of analyzing them.
If you have worked on it before, be sure to talk about the project, the challenges you faced, and how you overcame them.
- What is CORS?
CORS (Cross-Origin Resource Sharing) is a way of using several domains to access internet resources. CORS allows web scripts to link more easily with the external content of the originating domain. As a consequence, it is easier to incorporate web services.
- What is Callback Hell?
Callback Hell, often known as the Pyramid of Doom in asynchronous programming, is a frequent anti-pattern (multiple functions running at the same time). A high number of nested “if” statements or functions are described by this slang word. Callback hell is just a circumstance in which you have several asynchronous functions. Because those routines are interdependent, having so many callback functions stacked on so many levels might grow rather complicated. The employment of callback functions results in difficult-to-read and-maintain code.
- What is Long Polling?
Long polling is a web development technique for improving data flow from the server to the client. The long polling pattern is used by the client to obtain information from the server. If the server does not have any information about the client, it holds the request and waits for some information to become available before returning an empty resource.
- What is the difference between a blue/green deployment and a rolling deployment?
In Blue/Green Deployment, you have TWO complete ecosystems. The Blue environment is operational right now, whereas the Green environment is the one you want to upgrade to. When you go from blue to green, the traffic is redirected to your new green environment. You can delete or save your old blue environment as a backup until the green environment is formed.
In Rolling Deployment, there is only ONE complete environment. Before being relocated to another subset, the code is deployed in a subset of the same environment’s instances.
- What is RESTful API?
REST is an acronym for Representational State Transfer. It’s an architectural approach for developing Web Services. To access and utilize the data, it makes HTTP queries. One has the ability to create, change, read, and remove information.
The code that allows two software applications to connect with one other is known as an API (Application Program Interface) for a website. It enables one to create code that requests services from an operating system or another program.
- What is the biggest mistake you made in any of your projects? How did you overcome it?
You can’t always be perfect while working on this technology. That is absurd. You must be open and honest about a mistake you believe was significant. To add to it, talk about what you learned from this blunder and the steps you took to mitigate the harm.
Some Final thoughts
No employer expects you to know everything, whether you are a new or seasoned applicant. However, it is critical to ensure thorough interview preparation and show enthusiasm for the position you’re applying for. At the same time being truthful and straightforward will always pay off. We hope that with this list of likely full-stack interview questions and some of the best interview tips, you will have an edge over your competition.
If you’re not sure that your full-stack skills are up to the mark yet, don’t worry! At Skill-House, you can build your skills, improve your knowledge and troubleshoot highly complex systems using front-end and back-end technologies with professional guidance. Register now for a full-stack web development online course and kickstart your promising developer career with Skill-House today!