With so many firms vying for the finest engineers, finding the right talent in the IT industry is difficult. And knowing who your fellow applicants are and asking proper questions during the interview are essential to stand out as good developers.
Let's get started on all you need to know about cracking interviews for full-stack development jobs. This blog guides you with full stack developer job interview questions and answers.
A full-stack developer is a programmer who creates software for both users and service providers. In simple language, a full-stack developer is familiar with the whole technological stack that makes up a website. They are fluent in both front-end and back-end programming languages, and primarily focus on web development.
The majority of full stack developers do not start out as full stack developers. Before pursuing full-stack, they generally work in a variety of roles. They also have a good understanding of business logic and user experience. In other words, they have sufficient business expertise to offer advice to others.
Check for the full stack web developer course syllabus here to understand what you’ll be studying in the course.
Full-stack developers are well-versed in the methodologies and products used in a business. This implies that, depending on their experience, individuals can always give important comments and ideas on a product or design. They can also assist other members of the team in ‘developing,' reducing the time and technical costs associated with team communication, and technology docking.
Ans. A full-stack developer usually knows -
To answer why it’s your favourite, you must have some projects to back up your interest and support your work with examples.
Ans. Pair programming, which includes two developers working on the same terminal, is one of the basic aspects of extreme programming. While one developer is known as the "Driver" and is in charge of typing the codes, the other developer is known as the "navigator" and is in charge of evaluating codes.
Ans. Cross-Origin Resource Sharing, or CORS, is a method of accessing online resources from multiple domains. Web scripts can be more freely connected with the external material of the originating domain with the help of CORS. As a result, online services are more easily integrated.
Ans. DevOps is a new word in the IT world that refers to a technique that emphasizes the collaboration and communication of both software developers and other information technology (IT) professionals. It focuses on delivering software products more quickly and decreasing release failure rates.
Ans.The asynchronous function requires callbacks as a return parameter. A callback hell condition occurs when many asynchronous functions are chained together.
Ans. Multi-threading is a technique for increasing the performance of a CPU. It is usually defined as a program’s capacity to be handled by several users at the same time. It is accomplished by the execution of a number of processes provided by the operating system.
Ans. Long Polling is a web development strategy that improves data pushing from the server to the client. The client requests information from the server using the Long Polling pattern. Instead of delivering an empty resource, if the server does not have any information about the client, it holds the request and waits for some information to become available.
Ans. GraphQL does not deal with allocated resources, which is the most significant distinction between REST and GraphQL. Instead, everything is viewed as a graph, which is linked and can be searched to meet specific requirements.
Ans. Node.js is a single-threaded application but it supports concurrency via the concept of event and callbacks. As every API of Node js is asynchronous and a single thread, it uses async function calls to maintain the concurrency. Node uses an observer pattern. Node thread keeps an event loop and whenever any task gets completed, it fires the corresponding event which signals the event listener function to get executed.
Ans. Docker is a lightweight virtualization platform that may be used on your local system or in the cloud. Despite the fact that they aren't technically separate devices, they provide many of the same advantages. Docker may encapsulate ancient programmes, making it possible to deploy them on servers that would be difficult to set up with older packages and software versions.
GET is used for recovering the data. It carries the request parameter in the URL string, and it can be bookmarked.
POST is mainly used for writing the data. It takes the request parameter in the message body, and it cannot be bookmarked.
You have TWO full ecosystems in Blue/Green Deployment. The Blue environment is the one that is now active, whereas the Green environment is the one that you wish to upgrade to. The traffic is routed to your new green environment once you change the environment from blue to green. Until the green environment is established, you can delete or save your old blue environment as a backup.
There is just ONE full environment in Rolling Deployment. The code is deployed in a subset of the same environment's instances before being moved to another subset.
In ES6 let and const are hoisted (like var, class and function), but there is a period between entering scope and being declared where they cannot be accessed. This period is the temporal dead zone (TDZ).
//console.log(aLet) // would throw ReferenceError
console.log(aLet); // undefined
aLet = 10;
console.log(aLet); // 10
In this example, the TDZ ends when aLet is declared, rather than assigned.
The rise of Vue JS Functional, real-time web apps, progressive apps, and mobile web development.
Extensions that are more compatible are becoming increasingly common.
Ans. It's a wide word, but software developers use it to describe a design that allows layers and components in a system to be decoupled.
Continuous Integration is a method of testing, which involves the use of specifically developed and automated programmes. This procedure enables developers to quickly deploy codes during the production phase. This method is used by web developers to integrate scripts on a daily basis. These codes are automatically verified. Continuous Integration aids in the rapid detection and location of faults.
When we need to hoist a function — since arrow functions are nameless.
When we wish to utilise this/argument in a function, we have to rely on the outer context since arrow functions don't have this/argument of their own.
Arrow functions are anonymous when we want to utilise a named function.
Ans. Your example of ideas that you’ve put into action should look something like this: I got the notion at my former job to devote a few hours on Fridays to assessing our efficiency. On Fridays, our workload was lower anyhow, so we were able to devote some time to enhancing our job.
4. Speed and Performance
6. Reinventing the Wheel
11. Test Coverage and Test Quality
12. Fit for Purpose
Briefly explain what the mistake was, but don’t dwell on it.
Quickly switch over to what you learned or how you improved after troubleshooting that.
You might also explain the steps you took to make sure that the mistake never happened again.
Step 1: Measuring the basic usage of the new feature
Step 2: Dig deeper into event properties to look for patterns
Step 3: Understanding what users are doing right before using the feature
Step 4: Building a behavioral cohort of people who used the feature to analyze how they compare to your overall user population
Step 5: Analyzing the impact of the new feature on retention
Step 6: Measuring the impact of the new feature on your key conversion funnels
Step 7: Measuring the impact of your new feature on engagement
Ans. Full Stack Developers are multitasking experts with all-encompassing knowledge and skills. They are familiar with both client-side and server-side applications. They work on both the front-end and back-end of software development.
When presented with a new project, how did you select the tools and technologies involved?
In your Chrome browser, open the site you want to debug.
Right click over an element you want to debug. In this example, we're analyzing a yellow button.
Depending on the project, what customers need may be a mobile stack, a web stack, or a native application stack.
What technologies and programming languages do you require from start to finish for developing a project?
It comes down to how effectively the interviewer can assess your readiness to begin working. This is a subject of debate. A full stack developer who is knowledgeable and proficient may easily be distinguished from the one who is inexperienced. As a result, you must reply with caution.
The interviewer will get an understanding of how you think and how you deal with methods. The response you are giving should be straightforward and detailed, and why you would have developed it at the front or back end.
Ans. Full stack developers deal with a wide range of programming languages. Having only one favourite coding language might be a red flag. An applicant should ideally be fluent in a few languages, particularly the ones with which he can design the front end and others with which he can manage the back end. A candidate should be able to show this skillfully, remembering to include the most common ones like HTML, CSS, Python etc.
Ans. This is a hypothetical question designed to help you understand how the recruiting manager will assess your preparedness to begin the job. It's a simple method to spot the difference between a good full stack developer and a novice. Those that have trouble communicating their views will have a tough time getting through at this point.
Ans. This is a difficult question to answer. This will offer the hiring manager a sense of the difficulty and style of previous projects you've worked on. You should be specific about the problems you encountered and the steps you took to address them. You might also discuss the lessons you learned from the situation.
Ans. Explain your engagement and understanding gained via continuous learning with friends, co-workers, or online - that is one correct approach to respond to this question. Also, if you have any personal projects where you employed your skills, now is a great opportunity to show them off. You might also include the webinars or forums that you attend on a regular basis.
Some of the DBMS technologies used for full-stack development are as follows
Enrol into a full-stack web development course with crampete, grab the certificate upon finishing the course to add some value to your resume.
The above questions and answers are meant to help prepare you for the job interview for a full-stack developer role. In addition, no employer expects you to know everything, whether you are a newcomer or an experienced candidate. However, it is critical to be well-prepared for the interview and demonstrate enthusiasm for the position. Simultaneously, being truthful and upfront will always help in the long run.
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