Full Stack Developer Test

1. What are the advantages of Agile Testing?

Saves time

Requires less planning and creates less documentation

Regular feedback from end users

Solves issues in advance by daily meeting

All the above

The advantages of Agile Testing include saving time, requiring less planning and creating less documentation, regular feedback from end users, and solving issues in advance through daily meetings. By incorporating all of these elements, Agile Testing allows for a more efficient and streamlined testing process, ultimately leading to better quality software development.

Explanation

The advantages of Agile Testing include saving time, requiring less planning and creating less documentation, regular feedback from end users, and solving issues in advance through daily meetings. By incorporating all of these elements, Agile Testing allows for a more efficient and streamlined testing process, ultimately leading to better quality software development.

2. In agile development, lengthy documentation is created.

True

False

In agile development, the emphasis is on creating working software rather than extensive documentation. Agile promotes a collaborative and flexible approach, where teams focus on delivering value to customers through iterative development and frequent feedback. Documentation in agile is typically lightweight and concise, with a focus on user stories, acceptance criteria, and other essential information needed for development and testing. Therefore, the statement that lengthy documentation is created in agile development is false.

Explanation

In agile development, the emphasis is on creating working software rather than extensive documentation. Agile promotes a collaborative and flexible approach, where teams focus on delivering value to customers through iterative development and frequent feedback. Documentation in agile is typically lightweight and concise, with a focus on user stories, acceptance criteria, and other essential information needed for development and testing. Therefore, the statement that lengthy documentation is created in agile development is false.

3. What is a closure?

Function objects

Scope where function’s variables are resolved

Both Function objects and Scope where function’s variables are resolved

Function return value

A closure refers to both the function object itself and the scope in which the function's variables are resolved. In other words, a closure includes the function along with the variables that are accessible within that function's scope. This allows the function to access and manipulate variables even after it has been called and the scope in which it was defined has been destroyed.

Explanation

A closure refers to both the function object itself and the scope in which the function's variables are resolved. In other words, a closure includes the function along with the variables that are accessible within that function's scope. This allows the function to access and manipulate variables even after it has been called and the scope in which it was defined has been destroyed.

4. What are the selector methods in D3 JS?

Select()

Select All()

Append()

Html()

All of these

The correct answer is "All of these" because D3.js provides multiple selector methods that can be used to select elements in the DOM. The select() method is used to select a single element, the selectAll() method is used to select multiple elements, and the append() method is used to add new elements to the DOM. The html() method is used to get or set the inner HTML content of an element. Therefore, all of these methods are selector methods in D3.js.

Explanation

The correct answer is "All of these" because D3.js provides multiple selector methods that can be used to select elements in the DOM. The select() method is used to select a single element, the selectAll() method is used to select multiple elements, and the append() method is used to add new elements to the DOM. The html() method is used to get or set the inner HTML content of an element. Therefore, all of these methods are selector methods in D3.js.

5. Which of the following is not related to mutation methods?

Push()

Filter()

Splice()

Pop()

The filter() method is not related to mutation methods because it does not modify the original array. Instead, it creates a new array with all elements that pass a certain condition specified by a callback function. The push(), splice(), and pop() methods, on the other hand, are mutation methods as they directly modify the original array by adding, removing, or replacing elements.

Explanation

The filter() method is not related to mutation methods because it does not modify the original array. Instead, it creates a new array with all elements that pass a certain condition specified by a callback function. The push(), splice(), and pop() methods, on the other hand, are mutation methods as they directly modify the original array by adding, removing, or replacing elements.

6. V-show doesnot support the <template> element

True

False

The explanation for the given correct answer is that the v-show directive in Vue.js does not support the

Explanation

The explanation for the given correct answer is that the v-show directive in Vue.js does not support the

7. What is the short form of v-bind?

Bind

:

;

No short form

The short form of v-bind is ":".

Explanation

The short form of v-bind is ":".

8. In which of the following cases, D3.js is helpful?

Viewing huge data reports of account detail, e-commerce budgeting, population

Using D3 models on backgrounds of gaming applications

Analyzing and representing a server data

None of the mentioned

D3.js is helpful in the case of viewing huge data reports of account detail, e-commerce budgeting, and population because it is a powerful JavaScript library that enables the creation of dynamic and interactive data visualizations on web pages. It provides a wide range of tools and features to manipulate data and create visually appealing charts, graphs, and maps. Therefore, it can be used effectively to analyze and present large amounts of data in a visually appealing and interactive manner.

Explanation

D3.js is helpful in the case of viewing huge data reports of account detail, e-commerce budgeting, and population because it is a powerful JavaScript library that enables the creation of dynamic and interactive data visualizations on web pages. It provides a wide range of tools and features to manipulate data and create visually appealing charts, graphs, and maps. Therefore, it can be used effectively to analyze and present large amounts of data in a visually appealing and interactive manner.

9. A promise implementation in one of its simplest forms is as follows:

Var promise = new Promise( () => ());

Var promise = new Promise( () -> {});

Var promise = new Promise( () => []);

Var promise = new Promise( () => {});

The correct answer is "var promise = new Promise( () => {});" because this code creates a new Promise object with an empty arrow function as the executor function. The executor function is responsible for initiating some asynchronous operation and resolving or rejecting the promise based on the outcome of that operation. In this case, the empty arrow function indicates that there is no asynchronous operation being performed, so the promise will immediately be resolved with no value.

Explanation

The correct answer is "var promise = new Promise( () => {});" because this code creates a new Promise object with an empty arrow function as the executor function. The executor function is responsible for initiating some asynchronous operation and resolving or rejecting the promise based on the outcome of that operation. In this case, the empty arrow function indicates that there is no asynchronous operation being performed, so the promise will immediately be resolved with no value.

10. What does D3.js mean?

It is a JavaScript framework to display D3 models

It is a JavaScript library for changing native objects to D3 objects

It is Node.js to parse a server's data to objects with D3 features

It is a JavaScript library for creating and manipulating documents based on data

D3.js is a JavaScript library that is used for creating and manipulating documents based on data. It provides a set of tools and functions that enable developers to bind data to the Document Object Model (DOM) and then apply transformations to the document based on that data. With D3.js, developers can create dynamic and interactive visualizations by leveraging the power of data.

Explanation

D3.js is a JavaScript library that is used for creating and manipulating documents based on data. It provides a set of tools and functions that enable developers to bind data to the Document Object Model (DOM) and then apply transformations to the document based on that data. With D3.js, developers can create dynamic and interactive visualizations by leveraging the power of data.

11. What will be the output of following code?

 class maths
 {
     public int length;
     public int breadth;
     public maths(int x, int y)
     {
         length = x;
         breadth = y;
         Console.WriteLine(x + y);
     }
     public maths(double x, int y)
     {
         length = (int)x;
         breadth = y;
         Console.WriteLine(x * y);
     }
 }
class Program
{
    static void Main(string[] args)
    {
        maths m = new maths(20, 40);
        maths k = new maths(12.0, 12);
        Console.ReadLine();
    }
}

60, 24

60, 0

60, 144

60, 144.0

The code defines a class called "maths" with two constructors. The first constructor takes two integers as parameters and assigns them to the "length" and "breadth" variables. It then prints the sum of the two integers. The second constructor takes a double and an integer as parameters. It converts the double to an integer and assigns it to the "length" variable, and assigns the integer to the "breadth" variable. It then prints the product of the double and the integer. In the Main method, two instances of the "maths" class are created using the two different constructors. The first instance is created with the parameters 20 and 40, so the output is 60 (20 + 40). The second instance is created with the parameters 12.0 and 12, so the output is 144 (12.0 * 12).

Explanation

The code defines a class called "maths" with two constructors. The first constructor takes two integers as parameters and assigns them to the "length" and "breadth" variables. It then prints the sum of the two integers. The second constructor takes a double and an integer as parameters. It converts the double to an integer and assigns it to the "length" variable, and assigns the integer to the "breadth" variable. It then prints the product of the double and the integer. In the Main method, two instances of the "maths" class are created using the two different constructors. The first instance is created with the parameters 20 and 40, so the output is 60 (20 + 40). The second instance is created with the parameters 12.0 and 12, so the output is 144 (12.0 * 12).

12. How many types of directives available in vue.js

2

6

7

4

There are four types of directives available in Vue.js. Directives are special attributes that allow you to apply reactive behavior to the DOM. They are prefixed with "v-" and can be used to manipulate elements, control rendering, and bind data to the DOM.

Explanation

There are four types of directives available in Vue.js. Directives are special attributes that allow you to apply reactive behavior to the DOM. They are prefixed with "v-" and can be used to manipulate elements, control rendering, and bind data to the DOM.

13. What is the full form of MVVM?

Model-View-ValueModel

ModelValue-ValueModel

Model-View-ViewModel

Module-View-ViewModel

The full form of MVVM is Model-View-ViewModel. In this architectural pattern, the Model represents the data and business logic, the View represents the user interface, and the ViewModel acts as an intermediary between the Model and the View, providing data and commands for the View to display and interact with. This pattern helps in separating concerns and promoting testability and maintainability of the code.

Explanation

The full form of MVVM is Model-View-ViewModel. In this architectural pattern, the Model represents the data and business logic, the View represents the user interface, and the ViewModel acts as an intermediary between the Model and the View, providing data and commands for the View to display and interact with. This pattern helps in separating concerns and promoting testability and maintainability of the code.

14. Arrange the following scrum practices according to the order in which they are carried out. 1. Sprint planning 2. Daily scrum meet 3. Sprint retrospective meet 4. Sprint review meet 5. Sprint

1, 5, 2, 3, 4

1, 5, 2, 4, 3

1, 2, 5, 4, 3

1, 3, 2, 4, 5

The correct order of scrum practices is as follows: 1) Sprint planning, 2) Daily scrum meet, 3) Sprint review meet, 4) Sprint retrospective meet, and 5) Sprint. This sequence ensures that the team plans the work for the sprint, holds daily meetings to discuss progress, reviews the completed work, reflects on the sprint, and then starts a new sprint.

Explanation

The correct order of scrum practices is as follows: 1) Sprint planning, 2) Daily scrum meet, 3) Sprint review meet, 4) Sprint retrospective meet, and 5) Sprint. This sequence ensures that the team plans the work for the sprint, holds daily meetings to discuss progress, reviews the completed work, reflects on the sprint, and then starts a new sprint.

15. What will be the return value of the write() method when the Node cannot write the data immediately and has to buffer it internally?

0

1

True

False

When the Node cannot write the data immediately and has to buffer it internally, the return value of the write() method will be False. This means that the write operation was not successful and the data was not written immediately.

Explanation

When the Node cannot write the data immediately and has to buffer it internally, the return value of the write() method will be False. This means that the write operation was not successful and the data was not written immediately.

16. How to represent filter in vue.js?

||

|

!

?

The correct answer is "|". In Vue.js, the "|" symbol is used to represent a filter. Filters are used to format and manipulate data before it is rendered in the template. They can be applied to expressions in the template using the pipe "|" symbol followed by the filter name. Filters can be used for various purposes such as formatting dates, currency, and text transformations.

Explanation

The correct answer is "|". In Vue.js, the "|" symbol is used to represent a filter. Filters are used to format and manipulate data before it is rendered in the template. They can be applied to expressions in the template using the pipe "|" symbol followed by the filter name. Filters can be used for various purposes such as formatting dates, currency, and text transformations.

17. Which modifier is very useful for improve the performance on mobile devices?

.esc

.capture

.once

.passive

The .passive modifier is very useful for improving performance on mobile devices. It allows event listeners to be registered in a way that tells the browser that the listener will not call preventDefault(), allowing the browser to optimize scrolling and other touch interactions. This can lead to smoother and more responsive user experiences on mobile devices.

Explanation

The .passive modifier is very useful for improving performance on mobile devices. It allows event listeners to be registered in a way that tells the browser that the listener will not call preventDefault(), allowing the browser to optimize scrolling and other touch interactions. This can lead to smoother and more responsive user experiences on mobile devices.

18. Which directive is to used to attach event listeners that invoke methods?

V-on

V-bind

V-for

V-model

The v-on directive is used to attach event listeners that invoke methods in Vue.js. It allows you to listen to specific events, such as click or input, and then call a method when that event occurs. By using v-on, you can easily add interactivity to your application by responding to user actions and triggering the appropriate methods.

Explanation

The v-on directive is used to attach event listeners that invoke methods in Vue.js. It allows you to listen to specific events, such as click or input, and then call a method when that event occurs. By using v-on, you can easily add interactivity to your application by responding to user actions and triggering the appropriate methods.

19. Which of the following is lighter library for front end development

React.js

Vue.js

Both are equal

Both are not light librarie

Vue.js is considered a lighter library for front-end development compared to React.js. This is because Vue.js has a smaller file size and a simpler API, making it easier to learn and use. It also has better performance in terms of rendering speed and memory usage. Additionally, Vue.js allows for more flexibility in terms of integration with existing projects, making it a popular choice for developers looking for a lightweight front-end solution.

Explanation

Vue.js is considered a lighter library for front-end development compared to React.js. This is because Vue.js has a smaller file size and a simpler API, making it easier to learn and use. It also has better performance in terms of rendering speed and memory usage. Additionally, Vue.js allows for more flexibility in terms of integration with existing projects, making it a popular choice for developers looking for a lightweight front-end solution.

20. Which of the following terms is correct about SVG?

It is a JSON object to show properties in math figures

It is a markup language for determining two-dimensional vector graphics

It is a JavaScript fabric method to show the charts, tables

It is a markup language for determining two-dimensional vector graphics

not-available-via-ai

Explanation

not-available-via-ai