Roles Of Full Stack Developer
These are the duties of a full stack developer:
- Software design and development
- Writing codes for both the front and back end of any software
- Creating designs for user interactions on web application
- Designing databases and servers for the back end of any software
- Collaborating with product designers to design different features, etc.
How Servletcontext Is Differ From Servletconfig
| ServletContext | ServletConfig |
|---|---|
| ServletContext represents the whole web application running on a particular JVM and common for all the servlet. | ServletConfig object represents single servlet. |
| It is just like a global parameter associated with the whole application. | It is the same as the local parameter associated with a particular servlet. |
| It has application-wide scope so define outside servlet tag in the web.xml file. | It is a name-value pair defined inside the servlet section of web.xml files so it has servlet wide scope. |
| getServletContext method is used to get the context object. | getServletConfig method is used to get the config object. |
| To get the MIME type of a file or application session related information is stored using a servlet context object. | The shopping cart of a user is a specific to particular user so here we can use servlet config. |
What Is Numeric Promotion
Ans As the name suggests, the conversion from a smaller numeric type to a more significant numeric type is numeric promotion. In this process, byte, char, and short are turned into int values int values are turned into long values, and the long and float value is turned into double values as required.
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What Defines A Full Stack Developer
Ans A full stack developer comes with the following expertise:
- Programming Language: Proficiency in more than 2 programming languages.
- Frontend Technologies: The candidate should acquaint himself with technologies like HTML5, CSS3, Angular, etc.
- Frameworks: The candidate should be thorough with lingos surrounding developmental frameworks like Spring, Boot, Django, PHP, Hibernate, and more.
- Database: Familiarity with at least one database such as MySQL and Oracle.
- Ability to Design: Handiness in UI and UX designing.
Q9 What Are The Advantages And Disadvantages Of Using Use Strict
Ans use strict is a statement that is used to enable strict mode to entire scripts or individual functions. Strict mode is a way to opt in to a restricted variant of JavaScript.
Advantages-
Disadvantages-
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Could You Please Tell Us Some Of The Latest Trends In Full Tack Web Development
NOTE: This is not a timeless answer. The answer to this question depends on the trends at the moment. Therefore, make sure that you are always updated.
Some of the latest trends are the emergence of more compatible extensions, JavaScript improvement programming benefits, and the Vue JS Functional. Others include progressive and real-time web apps as well as mobile web development.
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How Does Sql Differ From Nosql
SQL is a standard database query language that is used for accessing and manipulating data in relational databases, while NoSQL is a non-relational database management system that does not use the SQL query language. Functionally, NoSQL is generally used for big data, whereas SQL is used for traditional data.
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What Are The Latest Trends In Full Stack Web Development
Full stack developer interview questions include talking about the latest trends in the field. If you are applying for full stack development, you should know:
- Rise of Vue JS Functional, real-time web apps, mobile web development, and progressive apps.
- Programming with improvement in JavaScript.
- Evolution of more compatible extensions.
Q11 Explain Prototype Inheritance In Javascript
Ans In a language implementing classical inheritance like Java, C#, or C++ you start by creating a classa blueprint for your objects and then you can create new objects from that class or you can extend the class, defining a new class that augments the original class.
In JavaScript you first create an object , then you can augment your own object or create new objects from it.
Every object in Javascript has a prototype. JavaScripts inheritance system is based on prototypes, and not class-based. When a message reaches an object, JavaScript will make an attempt to find a property in that object first. If it cannot find it, then the message will be sent directly to the objects prototype, and so on. That behavior called prototype chain or in many places, prototype inheritance.
Constructor functions are the most preferred way in JavaScript when it comes to constructing prototype chains. When we use new, JavaScript injects an implicit reference to the new object being created in the form of this keyword. It also returns this reference completely at the end of the function.
function Foo var foo = new Foo foo.kind //=> foo
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What Do You Mean By Promise Also Explain Its States
A promise is an object that can be returned synchronously from an asynchronous function. It may be in the following three states:
- Fulfilled: If a promise called the onFulfilled method, a promise will be in fulfilled state.
- Rejected: If a promise called the onRejceted method, a promise will be in rejected state.
- Pending: If a promise is not yet fulfilled or rejected, a promise will be in pending state.
A promise will be settled if and only if it is not pending.
Tell Me The Origin Of Prototyping In Javascript
Sam Stephenson developed the Prototype JavaScript Framework in February 2005 as a component of Ruby on Rails Ajax functionality. It is implemented as a single file of JavaScript code, usually named prototype.
Prototypes simply denote the objects created in JavaScript. They serve as the parent objects. If developers wish to create common tasks/properties/methods for all the objects inherited from the parent object, they must first define them under the prototype object.
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What Should A Full
Full-stack developer must introduce with the following:
- Programming Languages: A full-stack developer must have proficient in more than one programming language like Java, Python, Ruby, C++, etc. One must familiar with different ways to structure design, implement and test the project based on the programming language.
- Front End: One must familiar with the front-end technologies like HTML5, CSS3, Angular, etc. The understanding of third-party libraries like jQuery, Ajax, SASS, adds more advantages.
- Frameworks: Proficiency in words that are accompanied by development frameworks like Spring, Spring Boot, MyBatis, Django, PHP, Hibernate, js, yin, and more.
- Databases:One must be familiar with at least one database. If you are familiar with MySQL, Oracle, and MongoDB it is sufficient.
- Design Ability:The knowledge of prototype design like UI and UX design is also necessary.
How Do You Always Ensure That You Are Updated On Emerging Industry Trends
I am part of a community of developers. We hold regular meetups and discuss everything currently happening in the development world and the new updates or changes. I also attend webinars where we discuss trending and emerging issues. After the closure of business every day, I take some time to go through a couple of online journals to keep myself updated.
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Explain The Difference Between Git Pull And Git Fetch
Git Fetch
git fetch -all
Git Pull
- Git pulls new data and integrates it with the current working files, updating the current HEAD branch with the latest modifications from the remote server
- It attempts to combine remote modifications with those made locally
- Command – git pull origin master
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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:
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State Difference Between Blue/green Deployment And Rolling Deployment
Today, the software is rapidly created and features are often changed based on customer needs, and then it is deployed into production. Each organization has its unique way of getting new applications into the production environment. Most organizations follow the standard deployment and release strategies such as Blue-Green and Rolling Deployment.
- Blue-Green Deployment Strategy:
A deployment strategy like this creates two separate infrastructure environments i.e., blue and green. A blue environment contains older code , while a green environment contains the latest code . There is only one live production environment at any given time.
Example: For instance, the green environment is live and is receiving all user traffic, while the clone is idle. Once a new version of an application is ready for release, it can be deployed to the blue environment for testing. As soon as the new release passes testing, application traffic is switched from green to blue. Blue then becomes the live production environment, and Green becomes idle, ready for testing the next release.
- Rolling Deployment Strategy
Using this deployment strategy, old versions of an application are completely replaced with the new versions by completely replacing the infrastructure on which they run.
What Is Long Polling
Ans: Long Polling is a web development pattern that is used to surpass pushing data from the server to the client. By using 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 rather than sending an empty resource.
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Q15 Explain A Use Case For Docker
Ans
What Programming Language Are You Most Comfortable Working With
Be sure to answer this question honestly, but also show that you’ve done your homework and learned which programming languages they use. First, answer with your preferred language, whether it’s Python, JavaScript, or C++, and explain why.
If it turns out that the company prefers C++, but you prefer Python, let them know that you also took the time to learn C++ because you know how useful it is and how many companies rely on it. Of course, if you don’t know C++, don’t lie. Instead, tell them that it’s not your strongest language, but you’ll dedicate some time to get more familiar with it.
Because this is a Full-Stack Developer interview, it wouldn’t hurt to mention that you know HTML, CSS, and JavaScript, along with any back-end languages like SQL or Python. You want to show that you have the basics required to be great at your new job.
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Can You Share Something Interesting About Yourself
This is a question that employers often use to break the ice with candidates. Use it to demonstrate a valuable soft skill, or a desirable professional trait.
At the same time, keep your answer fun. For example, you could talk about how you started off developing websites because you wanted to create a version of Facebook just for you and your friends. Its totally fine if the story is a little quirky, but do keep it professional.
What Do You Mean By Batch Processing In Jdbc
Batch Processing is the process of executing multiple queries in one transaction. For example, consider loading data from files to database tables. Here instead of using statements or prepared statements, you can make use of batch processing which executes the bulk of queries in one transaction.
Advantages:
Batch Processing is achieved using addBatch and executeBatch methods.
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What Should Full
Must be capable in multiple languages, including PHP, Java, C #, Ruby, Python, and so forth. Know the words that are accompanied by development structures, such as Spring, JAVA, Python Django, PHP, node JS express, and so forth. Must know essential front-end technologies, such as CSS3, HTML5, and JavaScript. Knowledge of at least one database is normal. Fundamental information on the guideline of model structure, UI and UX design is required.
What Is A Call
In JavaScript, a call-back is a function that is supplied as an argument into another function, which is then asked to perform some kind of action or procedure inside the outer function. Call-back functions in JavaScript can be used both synchronously and asynchronously. The nodes APIs are designed to handle callbacks in all cases.
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Top 30 Full Stack Developer Interview Questions And Answers
- Category: Full Stack
Finding a good developer is a difficult process, and takes a lot of brainstorming because you must consider their skills and knowledge, expertise, culture fit, as well as other factors. Being a full-stack developer is essential for keeping up with the changes happening in the market on a daily basis. To get the job you want, you must first understand what interviewers are looking for, and what questions they might ask. You must ensure that your core competencies are current and that you comprehend the various structures and language groups.
When interviewing for any role, there are many factors to consider, but the most important is understanding and which skillset you want to invest in.
During the interview, questions are asked to help the interviewer determine the ability that the candidate possesses, and everything that he has learned during the full stack development training. This article will walk you through the typical questions that have been asked during a full-stack developer interview.
We will go over the top 30 full stack developer critical questions that are frequently asked in interviews. But, before we get into the interview questions, let’s take a look at what a Full Stack Developer is. A strong developer is the foundation of any business.
Hence, if you have recently completed your full stack developer course, Make sure you’re prepared for the next job interview by knowing the most frequently asked interview questions.
What Are The Differences Between Get And Post Requests
S.N. The Get request is designed for getting data from the server. The Post request is designed for sending the data to the server. 2 The request is sent via URL. The request is sent via an HTTP request body. 3 The request parameters are transmitted as a query string appended to the request. The request parameters are transmitted with the body of the request. 4 It is the default method hence it implements automatically. We need to specify manually. 5 We can send limited data with the Get request. We can send a large amount of data with the Post request. 6 It always submits data as text. We can send any type of data. 7 The use of Get is safe because it is idempotent. The use of Post unsafe because it is non-idempotent. 8 Visibility of Data The data is visible to the user as it puts the data in the URL. The data is not visible to the user as it puts the data in the message body. 9 The Get request can be bookmarked and caching. The post request cannot be bookmarked and caching. 10 It is more efficient than post. It is less efficient. Search is the best example of Get request. Login is the best example of a Post request.
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