K12 Techno Services Front end Developer Interview Questions and Answers

Q1. Very good all angular related question
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Q2. Rxjs concepts subjects
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Q3. Angular life cycle hooks
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Q4. How to use fork join
Ans. 
Fork join is a technique used in parallel programming to divide a task into smaller subtasks and then combine the results.
• Fork join is commonly used in multi-threading or concurrent programming.

• It allows multiple threads to work on different parts of a task simultaneously.

• Once all the subtasks are completed, the results are combined to get the final result.

• Fork join can improve performance by utilizing the available re...read more
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Q5. RESTand SPREAD operators
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Q1. Asked about lazy loading ?
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Q2. What do you mean by denouncing?
Ans. 
Denouncing refers to publicly declaring something as wrong or evil.
• Denouncing is the act of condemning or criticizing something publicly.

• It is often done to express disapproval or to call attention to a wrongdoing.

• Examples include denouncing acts of violence, discrimination, or corruption.

• Denouncing can also be used in political contexts to criticize policies or actions of a government.
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Q3. How redux state are cleaned ?
Ans. 
Redux state can be cleaned by dispatching an action to reset the state to its initial values.
• Dispatching an action with type 'RESET_STATE'

• Updating the reducer to return the initial state when 'RESET_STATE' action is dispatched
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Q4. Sorting the array
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Q5. Make pagination and sorting coding questions.
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Q1. How Netflix video loading works it was of system design
Ans. 
Netflix uses a content delivery network (CDN) to efficiently load videos based on user location and network conditions.
• Netflix uses a distributed network of servers to store and deliver video content closer to users for faster loading times.

• Content is cached on servers located in various regions to reduce latency and improve streaming quality.

• Netflix employs adaptive bitrate streaming to adjust video quality based on a...read more
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Q2. How can we download csv file of more then 1000mb and show the data that is downloaded while downloading?
Ans. 
To download a large CSV file (>1000mb) and show the data while downloading, use streaming and pagination techniques.
• Implement streaming to download the file in chunks instead of all at once.

• Use pagination to display the downloaded data in parts as it is being downloaded.

• Consider using libraries like PapaParse for parsing CSV data efficiently.

• Show a progress bar or indicator to inform the user about the download status.
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Q3. Pattern question
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Q4. React assingment
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Q1. They have asked about my resume or working experience. how i implemented those features
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Q2. Merge 2 array and sort in ascending order in JS, use Effect Hooks, Debouncing, Throttling, about API integration, how u fetched and make faster API call.
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DSA, React, JavaScript, Rest API, Redux, VUE js,

Q1. What is virtual DOM?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates.
• Virtual DOM is a concept used in React to improve performance.

• It is a lightweight copy of the actual DOM.

• It is used to minimize the number of updates needed to be made to the actual DOM.

• When a change is made to the virtual DOM, React compares it with the previous version and only updates the necessary changes to the actual DOM.

• This results i...read more
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Q2. What is Redux?How to implement Redux?
Ans. 
Redux is a predictable state container for JavaScript apps.
• Redux is a state management library for JavaScript applications.

• It helps in managing the state of an application in a predictable way.

• Redux follows a unidirectional data flow pattern.

• To implement Redux, we need to define actions, reducers, and a store.

• Actions are plain JavaScript objects that describe what happened.

• Reducers specify how the application's state c...read more
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Q1. Very good all angular related question
Add your answer
Q2. Rxjs concepts subjects
Add your answer
Q3. Angular life cycle hooks
Add your answer
Q4. How to use fork join
Ans. 
Fork join is a technique used in parallel programming to divide a task into smaller subtasks and then combine the results.
• Fork join is commonly used in multi-threading or concurrent programming.

• It allows multiple threads to work on different parts of a task simultaneously.

• Once all the subtasks are completed, the results are combined to get the final result.

• Fork join can improve performance by utilizing the available re...read more
Answered by AI
Add your answer
Q5. RESTand SPREAD operators
Add your answer