DarioHealth Interview Questions and Answers

C,c++ questions and two coding questions. basic mcq

Q1. Treeset, hashset difference
Ans. 
TreeSet and HashSet are both implementations of the Set interface in Java, but they have some key differences.
• TreeSet is a sorted set that maintains elements in ascending order, while HashSet does not guarantee any specific order.

• TreeSet uses a Red-Black tree data structure for storage, which allows for efficient retrieval of elements in sorted order.

• HashSet uses a hash table for storage, which provides constant-time p...read more
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Q2. Oops concept, dbms, programming questions
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Q3. Set and treeset and hashset
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Q1. How do you want to take your subject and department forward
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Q1. Questions related to NODEJS , PHP, Past projects, Resume
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Q2. Why Mongodb over Sql
Ans. 
MongoDB is preferred over SQL for its flexibility, scalability, and ease of use in handling unstructured data.
• MongoDB is a NoSQL database, making it easier to work with unstructured data compared to SQL.

• MongoDB is schema-less, allowing for more flexibility in data modeling and changes.

• MongoDB is horizontally scalable, making it easier to handle large amounts of data and high traffic loads.

• MongoDB's document-based data ...read more
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General question and programmatic, oopa data structure

Any program of python or java , c

Q1. Any of technical questions
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Q1. Any of questions like programatic etc
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The coding test was on HackerRank Plateform

Q1. Then Face to Face Technical Discussion happened, It involves basic but in-depth Programming.
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Q1. Managerial Round is there, based on Scenario based Questions
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Q1. General Introduction related Questions
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Q1. What is the Virtual DOM?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in memory, used for efficient updates in web development.
• Virtual DOM is a concept in React where a lightweight copy of the actual DOM is kept in memory.

• Changes are first made to the Virtual DOM, then compared with the actual DOM to minimize updates.

• This approach improves performance by reducing the number of direct manipulations to the actual DOM.
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Q2. How can we optimize the code in front end ?
Ans. 
Optimizing front end code involves minimizing file sizes, reducing HTTP requests, using efficient algorithms, and implementing lazy loading.
• Minimize file sizes by removing unnecessary code, compressing images, and using minification tools like UglifyJS.

• Reduce HTTP requests by combining CSS and JavaScript files, using sprites for images, and implementing caching strategies.

• Use efficient algorithms and data structures to...read more
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Q1. Why we use use effect and how will you implement the search feature
Ans. 
useEffect is used in React to perform side effects in function components. Implement search feature by using useEffect to update search results.
• useEffect is used to perform side effects in function components, such as data fetching, subscriptions, or manually changing the DOM.

• To implement search feature, you can use useEffect to update search results whenever the search query changes.

• Example: useEffect(() => { // co
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Q2. Usememo and use callback, useref, use statehooks
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Q1. Background verification and CTC expectations
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