Free Full-Stack Developer MCQ Questions and Answers — Questions and Answers

Question 1: Which of the following situations makes D3.js useful?

Using D3 models on backgrounds of gaming applications
Viewing huge data reports of account detail, e-commerce budgeting, population (Correct answer)
None of the mentioned
Analyzing and representing a server data

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

D3.js (Data-Driven Documents) is a powerful JavaScript library specifically designed for creating highly customized and interactive data visualizations for the web. It excels at binding data to DOM elements and transforming them. Therefore, D3.js is particularly useful for presenting and exploring large, complex datasets, such as detailed financial reports, e-commerce analytics, or demographic information, in a visually engaging and understandable manner.

Question 2: How many different kinds of directives are there in vue.js

6
4 (Correct answer)
2
7

Correct answer: 4

In Vue.js, there are primarily four main categories of built-in directives that provide special reactive behavior to the DOM. These include directives for content rendering (e.g., `v-text`, `v-html`), attribute binding (e.g., `v-bind`), event handling (e.g., `v-on`), and structural directives for conditional rendering and list rendering (e.g., `v-if`, `v-for`). These directives are fundamental for declarative manipulation of the DOM based on data changes.

Question 3: Long-winded documentation is produced in agile development.

TRUE
FALSE (Correct answer)

Correct answer: FALSE

Agile development methodologies prioritize 'working software over comprehensive documentation,' as articulated in the Agile Manifesto. The focus is on delivering functional increments frequently and gathering continuous feedback, rather than spending extensive time on detailed, upfront documentation. While some documentation is necessary, it is typically concise, just-in-time, and sufficient to support the team's work, avoiding 'long-winded' or excessive paperwork.

Question 4: 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, 2, 5, 4, 3
1, 5, 2, 4, 3 (Correct answer)
1, 5, 2, 3, 4
1, 3, 2, 4, 5

Correct answer: 1, 5, 2, 4, 3

The Scrum framework follows a specific sequence of events within each sprint cycle. It begins with Sprint Planning (1), followed by the execution of the Sprint itself (5), during which Daily Scrum Meets (2) occur. At the end of the sprint, a Sprint Review Meet (4) is held to inspect the increment, and finally, a Sprint Retrospective Meet (3) is conducted to identify improvements for the next sprint.

Question 5: What D3 JS selector techniques are there?

Append()
Select()
All of these (Correct answer)
Html()

Correct answer: All of these

D3.js utilizes several fundamental selector and manipulation techniques to interact with the Document Object Model (DOM). `select()` and `selectAll()` are used to choose elements, while `append()` is used to add new elements to the selection. Additionally, `html()` is a method used to get or set the inner HTML content of selected elements. All these methods are essential for dynamically creating and updating visualizations based on data.

Question 6: What benefits does agile testing offer?

Requires less planning and creates less documentation
Solves issues in advance by daily meeting
Saves time
Regular feedback from end users
All the above (Correct answer)

Correct answer: All the above

Agile testing offers numerous benefits by integrating testing throughout the development lifecycle. It reduces the need for extensive upfront planning and documentation, as issues are identified and addressed early through continuous testing and daily team synchronization. This iterative approach, combined with regular feedback from end-users, helps save time by preventing major defects and ensuring the product meets user needs efficiently.

Question 7: What will the write() method return if the data needs to be internally buffered since it can't be written by the Node immediately?

FALSE (Correct answer)
1
0
TRUE

Correct answer: FALSE

In Node.js streams, the `write()` method returns `false` if the internal buffer is full and the data cannot be immediately written to the underlying resource. This return value signals to the producer that it should pause writing until the `drain` event is emitted. The `drain` event indicates that the buffer has emptied, making it safe to resume writing data.

Free Full-Stack Developer MCQ Questions and Answers

Which of the following situations makes D3.js useful?