Full Stack Developer Test
Questions and Answers
- 1.
In agile development, lengthy documentation is created.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
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.Rate this question:
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- 2.
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
- A.
1, 5, 2, 3, 4
- B.
1, 5, 2, 4, 3
- C.
1, 2, 5, 4, 3
- D.
1, 3, 2, 4, 5
Correct Answer
B. 1, 5, 2, 4, 3Explanation
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.Rate this question:
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- 3.
What are the advantages of Agile Testing?
- A.
Saves time
- B.
Requires less planning and creates less documentation
- C.
Regular feedback from end users
- D.
Solves issues in advance by daily meeting
- E.
 All the above
Correct Answer
E. Â All the aboveExplanation
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.Rate this question:
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- 4.
What will be the return value of the write() method when the Node cannot write the data immediately and has to buffer it internally?
- A.
0
- B.
1
- C.
True
- D.
False
Correct Answer
D. FalseExplanation
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.Rate this question:
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- 5.
What is a closure?
- A.
Function objects
- B.
Scope where function’s variables are resolved
- C.
Both Function objects and Scope where function’s variables are resolved
- D.
Function return value
Correct Answer
C. Both Function objects and Scope where function’s variables are resolvedExplanation
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.Rate this question:
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- 6.
A promise implementation in one of its simplest forms is as follows:
- A.
Var promise = new Promise( () => ());
- B.
Var promise = new Promise( () -> {});
- C.
Var promise = new Promise( () => []);
- D.
Var promise = new Promise( () => {});
Correct Answer
D. Var promise = new Promise( () => {});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.Rate this question:
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- 7.
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(); } }
- A.
60, 24
- B.
60, 0
- C.
60, 144
- D.
60, 144.0
Correct Answer
C. 60, 144Explanation
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).Rate this question:
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- 8.
What are the selector methods in D3 JS?
- A.
Select()
- B.
Select All()
- C.
Append()
- D.
Html()
- E.
All of these
Correct Answer
E. All of theseExplanation
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.Rate this question:
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- 9.
What does D3.js mean?
- A.
It is a JavaScript framework to display D3 models
- B.
It is a JavaScript library for changing native objects to D3 objects
- C.
It is Node.js to parse a server's data to objects with D3 features
- D.
It is a JavaScript library for creating and manipulating documents based on data
Correct Answer
D. It is a JavaScript library for creating and manipulating documents based on dataExplanation
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.Rate this question:
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- 10.
Which of the following terms is correct about SVG?
- A.
It is a JSON object to show properties in math figures
- B.
It is a markup language for determining two-dimensional vector graphics
- C.
It is a JavaScript fabric method to show the charts, tables
- D.
It is a markup language for determining two-dimensional vector graphics
Correct Answer
C. It is a JavaScript fabric method to show the charts, tables -
- 11.
In which of the following cases, D3.js is helpful?
- A.
Viewing huge data reports of account detail, e-commerce budgeting, population
- B.
Using D3 models on backgrounds of gaming applications
- C.
Analyzing and representing a server data
- D.
None of the mentioned
Correct Answer
A. Viewing huge data reports of account detail, e-commerce budgeting, populationExplanation
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.Rate this question:
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- 12.
How many types of directives available in vue.js
- A.
2
- B.
6
- C.
7
- D.
4
Correct Answer
D. 4Explanation
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.Rate this question:
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- 13.
Which modifier is very useful for improve the performance on mobile devices?
- A.
.esc
- B.
.capture
- C.
.once
- D.
.passive
Correct Answer
D. .passiveExplanation
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.Rate this question:
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- 14.
What is the full form of MVVM?
- A.
Model-View-ValueModel
- B.
ModelValue-ValueModel
- C.
Model-View-ViewModel
- D.
Module-View-ViewModel
Correct Answer
C. Model-View-ViewModelExplanation
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.Rate this question:
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- 15.
Which directive is to used to attach event listeners that invoke methods?
- A.
V-on
- B.
V-bind
- C.
V-for
- D.
V-model
Correct Answer
A. V-onExplanation
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.Rate this question:
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- 16.
V-show doesnot support the <template> element
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The explanation for the given correct answer is that the v-show directive in Vue.js does not support the element. The v-show directive is used to conditionally display or hide elements based on a given expression. However, the element is not rendered in the final DOM, so v-show cannot be applied to it. Instead, the element is used as a placeholder for multiple elements or as a container for conditional rendering using v-if or v-for directives.Rate this question:
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- 17.
Which of the following is not related to mutation methods?
- A.
Push()
- B.
Filter()
- C.
Splice()
- D.
Pop()
Correct Answer
B. Filter()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.Rate this question:
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- 18.
How to represent filter in vue.js?
- A.
||
- B.
|
- C.
!
- D.
?
Correct Answer
B. |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.Rate this question:
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- 19.
What is the short form of v-bind?
- A.
Bind
- B.
:
- C.
;
- D.
No short form
Correct Answer
B. :Explanation
The short form of v-bind is ":".Rate this question:
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- 20.
Which of the following is lighter library for front end development
- A.
React.js
- B.
Vue.js
- C.
Both are equal
- D.
Both are not light librarie
Correct Answer
B. Vue.jsExplanation
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.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 05, 2020Quiz Created by
Salman
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