205 Palle technologies Interview Questions and Answers

Vue.js

Ques:- What is Vue.js?

Asked In :- Velocity Software Solutions, TPF Technologies, CodeCraft Technologies, DSK Digital Technologies, Talencia LLC, Wonderbiz Technologies, Codingmart Technologies, Ulearn, Roanuz, Aosta Software Technologies,

Right Answer:
Vue.js is a progressive JavaScript framework used for building user interfaces and single-page applications. It allows developers to create reactive components and manage state efficiently.

Comments

Admin Feb 8, 2020

Vue JS is basically pronounced as view, it is progressive framework useful in building UI’s.

Vue.js is small, versatile and approachable framework. If you are aware of CSS, HTML and JavaScript then you are good to go with developing Vue JS apps in no time.

Vue.js

Ques:- What is v-for directive in Vue JS?

Asked In :- Hummingbird Web Solutions, PreludeSys India, Xenovex technologies, Amiti Software Technologies, Talencia LLC, Young Globes, C-Edge Technologies, ITH Technologies (Infotech HUB), EWALL Solutions, Oakland Systems,

Right Answer:
The `v-for` directive in Vue.js is used to render a list of items by iterating over an array or object. It allows you to create multiple elements based on the data provided, using a syntax like `v-for="item in items"` where `items` is the array and `item` is the current element in the iteration.

Comments

Admin Feb 8, 2020

The v-for directive is being used to bind an array of Vue objects to an "array" of HTML element.

Vue.js

Ques:- What is v-on in Vue JS?

Asked In :- Velocity Software Solutions, Vanilla Networks, Aptroid, City Union Bank, Canopus Infosystems, Technoforte Software, IMEG, EWALL Solutions, DigiQ Solutions, VibrantMinds Technologies,

Right Answer:
`v-on` is a directive in Vue.js used to listen for DOM events and execute methods in response. It allows you to bind event listeners to elements in your Vue templates.

Comments

Admin Feb 8, 2020

This is an attribute which can be added to the DOM elements to listen to different events.

Vue.js

Ques:- List down some of the common transition classes in VueJS?

Asked In :- Velocity Software Solutions, Elsner Technologies, Aptroid, Wonderbiz Technologies, EvolveWare, KeyValue Software Systems, IMEG, Zysk Technologies, Enest Technologies, jasmin infotech pvt ltd,

Right Answer:
Some common transition classes in Vue.js are:

1. `v-enter`
2. `v-enter-active`
3. `v-leave`
4. `v-leave-active`
5. `v-enter-to` (or `v-enter-active` for the end state)

Comments

Admin Feb 8, 2020

Following are the classes:
● v-enter
● v-enter-active
● v-leave
● v-leave-active

Vue.js

Ques:- What is a virtual DOM?

Asked In :- Velocity Software Solutions, Signiwis Technologies, Nalsoft, Canopus Infosystems, EvolveWare, KeyValue Software Systems, EWALL Solutions, ConveGenius, Zerone Technologies, VibrantMinds Technologies,

Right Answer:
The virtual DOM is a lightweight in-memory representation of the actual DOM. It allows Vue.js to efficiently update the user interface by comparing changes and only re-rendering the parts of the DOM that have changed, improving performance and responsiveness.

Comments

Admin Feb 8, 2020

The “Virtual Document Object Model” or v-DOM is extremely different than the actual DOM. The v-DOM is an in memory representation of the underlying node (data structures) that the Vue js runtime engine processes different checks against prior to actually inform the DOM that an update is needed.

Jquery

Ques:- Is jQuery is a client or server scripting?

Asked In :- 6d technologies, palle technologies,

Jquery Software Developer/ Programmer

Ques:- Difference between height and outerHeight in jQuery.

Asked In :- Propellum Infotech, sovos, palle technologies, appranix,

CSS Javascript Jquery

Ques:- How to provide the security for the mobile applications ?

Asked In :- Addweb solutions, LiteBreeze Infotech, SWYM, Grid Logic Software, Zyoin Web Pvt., Celestial Systems Pvt., Keka, FOX SOLUTIONS, C E I India, Smart Cube India,

Right Answer:
To provide security for mobile applications, implement the following measures:

1. Use secure coding practices to prevent vulnerabilities.
2. Encrypt sensitive data both in transit and at rest.
3. Implement strong authentication and authorization mechanisms.
4. Regularly update the app to fix security vulnerabilities.
5. Use secure APIs and validate input data.
6. Employ code obfuscation to protect the app's source code.
7. Conduct regular security testing and audits.

Bootstrap JAVA Jquery Node JS

Ques:- What is ROR

Asked In :- Cron-J, eBay Classifieds, Skylex Technologies, Orion Innovation, citiustech, sopra banking software, mobikasa, great learning, iopex technologies, palle technologies,

Right Answer:
ROR stands for Ruby on Rails, which is a web application framework written in the Ruby programming language.

Jquery

Ques:- How to disable jQuery animation?

Asked In :- eGain Communications, Xplore-Tech Services, iSteer, Slk Software Pvt Ltd, entrepreneur first, palle technologies,

Right Answer:
To disable jQuery animation, you can use the `.stop()` method. For example:

```javascript
$('#element').stop(true, true);
```

Comments

Admin May 17, 2020

If we want to disable the animation methods,so det the default valut to True.

Admin May 17, 2020

Using jQuery property "jQuery.fx.off", which when set to true, disables all the jQuery animation. When this is done, all animation methods will immediately set elements to their final state when called, rather than displaying an effect.

Spring Boot

Ques:- What is the role of Spring Boot CLI

Asked In :- palle technologies,

Right Answer:
Spring Boot CLI (Command Line Interface) is a tool that allows developers to quickly create, run, and manage Spring Boot applications from the command line using Groovy scripts. It simplifies the development process by providing a way to easily set up and test Spring applications without needing to configure a full project structure.

Spring Boot

Ques:- How do you run a Spring Boot application

Asked In :- Pennant Technologies, kgisl, pinnacle infotech, palle technologies, pranion technology ventures private limited,

Right Answer:
You can run a Spring Boot application by executing the main method in the main class annotated with `@SpringBootApplication`, or by using the command `mvn spring-boot:run` if you are using Maven, or `./gradlew bootRun` if you are using Gradle. Additionally, you can run the packaged JAR file using the command `java -jar your-application.jar`.

Spring Boot

Ques:- What is Spring Boot Actuator and what functionality does it provide

Asked In :- Angular Minds, Codingmart Technologies, Thinkitive Technologies, Solverminds Solutions Technologies, kgisl, people tech group inc, revature, palle technologies,

Right Answer:
Spring Boot Actuator is a module in Spring Boot that provides production-ready features to help monitor and manage applications. It offers functionalities such as health checks, metrics, application environment information, and endpoints for managing application settings and configurations.

Spring Boot

Ques:- What is the use of application.properties or application.yml in Spring Boot

Asked In :- worldline global, palle technologies, edvenswa tech,

Right Answer:
The `application.properties` or `application.yml` files in Spring Boot are used to configure application settings, such as database connections, server ports, and other environment-specific properties. They allow developers to externalize configuration and manage application behavior without changing the code.

Spring Boot

Ques:- What are Spring Boot DevTools and how do they enhance the development experience

Asked In :- EdgeVerve Systems, Propel Technology, Solverminds Solutions Technologies, pinnacle infotech, palle technologies, pranion technology ventures private limited,

Right Answer:
Spring Boot DevTools is a set of tools that enhances the development experience by providing features like automatic restarts, live reload, and enhanced debugging. It allows developers to see changes in their code immediately without needing to restart the application manually, making the development process faster and more efficient.

Ruby On Rails

Ques:- What is the difference between sessions and flash?

Asked In :- palle technologies,

Comments

Admin May 17, 2020

Session is for the application i.e If user logs in the
session will be applied for the user.
Flash is valid from one request to other i.e if the page is
redirected from one page to other,its valid in within this
request.

Admin May 17, 2020

Session is only for store the small amount of user
data,which data not stored permanently that's when we logged
out from our application.. which session value will removed.
But Flash is used to display the some messages like error
message and useful information messsages in view pages...

Ruby On Rails

Ques:- what is Cross-Site Request Forgery (CSRF) and how Rails is protected against it?

Asked In :- V2STech Solutions, palle technologies,

Ruby On Rails

Ques:- what are benefits of using active record as opposed to raw sql queries?

Asked In :- BluePi, Webtech Developers, palle technologies,

Ruby On Rails

Ques:- What I have to do to view my project always on browser?

Asked In :- Samsung Research America, palle technologies,

Ruby On Rails

Ques:- What is Dynamic finders ?

Asked In :- palle technologies,

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