What Is A Continuous Integration And Continuous Delivery
CI/CD is a best practice to develop applications in which code changes more frequently and rapidly. Sometimes, it is also known as CI\CD pipeline. It is widely used in DevOps and also an agile methodology.
Continuous integration is a coding philosophy or deployment practice in which developers integrate their code in a shared repository several times a day. Because modern application requires developing code in different platforms. The goal of continuous integration is to establish an automated mechanism that builds, test, and package the application.
Continuous delivery starts where CI ends. It automatically delivers the application to the selected infrastructure. CD ensures the automated delivery of code if any changes are made in the code.
Common Full Stack Web Developer Interview Questions And Answers
There are always some full stack web developer interview questions and answers that would be very common to ask. And to make this post exhaustive in order to give the maximum benefit to the user, we have researched them as well. Here are the top commonly asked full stack web developer interview questions.
Do You Enjoy Management Or Execution More
Ans: Every senior professional will be asked this full stack web developer interview question. Recruiters want to know if you want to stay in a technical role or would want to switch to a managerial position. They also at times might push a bit and ask if you prefer to work alone or in paired groups. Its important, to be honest here. The companys requirements might be different from your interests, so it is ideal that the expectations are set straight from the get-go.
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Q45 What Do You Mean By Data Attributes And Why Is It Used
Ans HTML 5 has data-* which are custom attributes defined by the developer. They are used when any existing character is not suitable to be used. These attributes are only used on the page they are written on, and they do not need Ajax calls.
These are Global attributes, so they can be applied to any element.
What Are The Differences Between Constructor Injection And Setter Injection
| Constructor Injection | |
|---|---|
| There is no partial injection of dependencies. | There can be a partial injection of dependencies. |
| It does not override the setter injection value. | It overrides the constructor injection value if both are defined. |
| It always creates a new instance if any modification occurs. | It does not create a new instance if we made any changes to it. |
| Using constructor injection is better for too many properties. | Using setter injection is better for few properties. |
| It makes bean class objects as immutable. | It makes bean class objects as mutable. |
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Why Are You Leaving Your Current Company
When answering this question, dont throw your current company under the bus, because you dont want to give the impression that you arent a team player.
Instead, focus on what you think your ideal workplace can offer. Maybe you want a change in industry or more responsibilities. Highlight those positives, and frame your desire to leave your previous company in those terms.
Here are some more reasons you can cite for wanting to leave your current job:
- Wanting more challenging work
Q27 What Is An Event Loop In Nodejs
Ans In general, an event loop is a mechanism that expects and dispatches events or messages in a program. In Node.js, event loops are central flow constructs.
For example, whenever a request needs to be processed, it is inserted into the event loop and processed as soon as it is ready to be processed.
Rather than doing it alone, the node delegates responsibility for managing the system. Because of this behavior, Node does not actively wait for this task to complete and can process other requests in the meantime.
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Q14 What Is Long Polling
Ans Long Polling is a pattern in web development that is used to improve pushing data from the server to the client. By using a Long Polling pattern, the Client requests information from the server.
If the server does not have any information about the client, the server holds the request and waits for some information to be available instead of sending an empty resource.
Consider The Following Two Tables: Create Table `posts` create Table `post: Likes` Write A Query To Retrieve All Data From The Posts Table For A Given User: Id In Addition To This The Returned Recordset Should Also Include A Count Of Post: Likes For Each Post
Firstly, and most importantly, the answer should include one, and only one, query. There are numerous ways to achieve the expected result, but the correct way is the following:
SELECT posts.*, COUNT AS likes FROM posts LEFT JOIN post_likes ON posts.id = post_likes.post_idWHERE posts.user_id = 'XXX'GROUP BY posts.id
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What Are The Most Important Qualities That A Full Stack Developer Must Have
Qualities of a web developer
Ans: A full stack web developer interview will surely be incomplete without this question, especially at a freshers level. A candidate should take time to talk about the competency required in various coding language being the foundation stone on which a good professional can be built. He should talk about coordination skills that he would need while working in a team and mark excellent observation skills as a prime factor in working well in this role.
What Is Pair Programming
Pair programming is a relatively new software development technique. The practice involves two programmers assuming roles known as driver and navigator. The driver is the person writing the code while the navigator observes each line for correctness.
There are a few different ways that programmers are paired during a pair programming sprint. That includes:
- Expert-expert: Usually done on more complex projects where two experts can work together to boost each others productivity.
- Beginner-beginner: Programmers who are early in their career might not be able to handle projects on their own and are therefore paired with someone with whom they can bounce ideas and write code.
- Expert-newbie: This pairing is done so that the younger programmers in the team can spend time observing and learning from the more experienced developers.
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What Is The Use Of Pseudo
Pseudo-classes are used as a popular technique in CSS to change the style of an element when this element changes its state.
There are numerous examples of when you use a pseudo-class:
- For the style change when the mouse moves over the element
- For out-of-focus animations
- For providing styles for external links
We have to understand media queries in the next set of interview questions for web developers. Letâs check it out.
Kotlin Has A Number Of Features That Are Not Found In Java What Is Your Favorite Feature Of Kotlin And Why
This question tests the candidates understanding of Kotlin. They should provide an example of features they like in this programming language.
Example answer:
My favorite feature of Kotlin is its support for lambdas. This allows you to write code that is more concise and expressive. It also makes it easier to use functional programming features.
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Describe A Project That Went Wrong What Would You Do Differently Today
Everyone has that nightmare project. Perhaps scope creep took over. Maybe the client just didnt know what they wanted. Everyone has failures, especially in development. What matters is your ability to learn and grow from these failures.
Example: Two key stakeholders strongly disagreed on a projects direction. We chose the direction that made the most sense for the project, but the second stakeholder pulled the plug last minute. We should have gotten them aligned before moving forward instead of hoping for the best.
Could You Walk Us Through The Steps Involved In Setting Up A Server
In this question, the candidate is tested on their experience with setting up server-side rendered Angular applications.
Example answer:
Here are the steps involved in setting up a server-side rendered Angular application using NodeJS and ExpressJS:
- Install NodeJS and ExpressJS.
- Create a new project folder and cd into it.
- Create a package.json file and install the required dependencies.
- Create an index.js file and require the necessary modules.
- Set up your server configuration in ExpressJS.
- Mount your Angular application in ExpressJS.
- Start your server and test it out!
Dear senior Fullstack developer, were these interview questions easy to answer?
Come and join us as a Remote FullStack Developer.
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Q34 What Is Closure Give An Example
Ans Closures are made at whatever point a variable that is characterized external the current extension is gotten to from inside some inward degree.
It gives you admittance to an external functions degree from an internal capacity. In JavaScript, Closures are made each time a capacity is made. To utilize a conclusion, essentially characterize a function inside another function and uncover it.
Q18 What Is Event Loop
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 is 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.
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What Is A Full Stack Developer Interview
First: What can you expect from full stack web developer interview questions?
If this is your first interview as a full stack developer, youre probably nervous. But try not to worry. The interview process for a full stack developer is rigorous but clear.
While this may vary, most technology interviews operate in 3 to 4 stages. That may sound exhausting, but once youve cleared the initial stages, youre usually a lock for at least an offer.
Its a long step. Some of the biggest FAANG companies may take months to go through the interview process. But as you go through this process, you also attune your skills as a full stack developer.
What Is The Observer Pattern
The purpose of the Observer pattern is to define a one-to-many dependency between objects, as when an object changes the state, then all its dependents are notified and updated automatically. The object that watches on the state of another object is called the observer, and the object that is being watched is called the subject.
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A Common Issue When Integrating Third Party Services Within Your Own Api Requests Is Having To Wait For The Response And As Such Forcing The User To Have To Wait For Longer How Would You Go About Avoiding This Name Any Relevant Technologies If Appropriate
The most effective way to solve this problem is to use queues.
When a request is made to our API, a separate job is then created and added to a queue. This job will then be executed independently to the requested endpoint, thus allowing the server to respond without delay.
There are many queue providers but the most notable are:
Although the answer to this is debatable, the widely accepted practice would be to use a 409 Conflict HTTP status code.
It would also be acceptable to return a 422 Unprocessable Entity.
Some may argue that a 400 Bad Request is acceptable, but we discourage this, since conventionally it implies the server did not understand the request, which in this case is not true.
If the data within the API is publicly accessible then, technically, it is not possible to completely prevent data scraping. However, there is an effective solution that will deter most people/bots: rate limiting .
Throttling will prevent a certain device from making a defined number of requests within a defined time. Upon exceeding the defined number of requests, a 429 Too Many Attempts HTTP error should be thrown.
Note: It is important to track the device with more than just an IP address as this is not unique to the device and can result in an entire network losing access to an API.
Other less-than-ideal answers include:
What Is The Solid Principle In Java
In Java, SOLID principles are an object-oriented approach that are applied to software structure design. It is conceptualized by Robert C. Martin . These five principles have changed the world of object-oriented programming, and also changed the way of writing software. It also ensures that the software is modular, easy to understand, debug, and refactor.
The word SOLID acronym for:
- Single Responsibility Principle
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What Do Full Stack Web Developers Do
A Full Stack Web Developer is a person who is familiar with developing both client and server software. In addition to mastering CSS and HTML, they are also know how to program browsers, databases, and servers.
To fully comprehend the role of Full Stack developer, you must understand the web development components – front end and back end
The front end comprises a visible part of the application in which the user interacts, while the back end includes business logic.
Tell Me Something That Is Not On Your Resume
This one can be a curveball, but recruiters usually just want some added information on your work experience or your abilities. Here are a few ways of answering this question:
What Attracted You To This Role
Although you should tailor your resume for each role that youre applying for, you can add a bit more about what got you interested in that specific role. Explain where you came across the job posting, why it got you excited, and why you think that you are a perfect fit for the role.
An Instance Where You Went the Extra Mile
Recruiters love when candidates demonstrate initiative. So you can go into an instance in one of your previous jobs where you went above and beyond the responsibilities of your role. Maybe you took the initiative to optimize an application and wrote the code yourself, or established a mentoring program for junior developers and interns.
Talk About a Personal Quality That Matches a Job Requirement
Lets say youre applying to a full-stack developer job at a sports video analysis company and youre passionate about sports. Mention that in your interview. Any hobbies or strengths that you have that are relevant to the job that youre applying to can be worth mentioning in your answer to this question.
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Advanced Experienced Full Stack Developer Interview Questions And Answers
Full stack developer interview questions and answers for experienced developers are less about technologies and more about your work habits and experience working with other people. How do you react to tight deadlines? Do you have management experience? What do you do when theres a crunch? And how do you stay healthy and happy under stress?
Creating The Context Of The Interview
The questions that are asked in a full stack developers interview are quite different from the regular web developer technical interview questions. This is primarily due to the difference in the job roles of the two positions.
A full stack web developer is an all-in-one package. He is someone who is able to work on both the front end as well as the back end of a website. Not only that, he should be able to handle the logic, database, interactions, server configurations, and user authentication of an application. Sometimes he is also expected to work on activities numerous than these.
On a general note, in a full stack web developer interview, a candidate should be able to demonstrate great organizational skills and precise attention to detail. These professionals are in a higher skill intensive role and should be able to demonstrate sharpness and presence of mind. Weaker candidates generally struggle to communicate well and show low-quality interpersonal skills.
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What Do You Know About Full
This might seem like a technical question, but isnt. Dont use this as an opportunity to dive into everything you know about server-side development or the rules of effective user experience design.
What recruiters actually want to know is whether you understand the broad field of full-stack development and the basic roles and responsibilities of a full-stack developer.
So start by explaining what full-stack development is. Then, describe their responsibilities, which include:
- Converting business requirements into software specifications for new development projects
- Designing user experiences and interactions for software applications
- Designing graphic assets for new software products and building wireframes
- Building backend systems like databases, servers, and version control systems
- Generating strategies for optimizing the scalability, performance, and stability of software applications
