bebo Technologies Interview Questions, Process, and Tips

Q1. What are promises ? D/W Promise.all and Promise.allSettled
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Q2. D/W let and var
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Q3. What are callback function ? Give disadvantages
Ans. 
Callback functions are functions passed as arguments to other functions to be executed later.
• Used in event handling, asynchronous operations, and to achieve higher order functions

• Disadvantages include callback hell, difficult to read and maintain code, and potential for memory leaks

• Example: setTimeout function in JavaScript takes a callback function as an argument
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Q4. D/w useMemo and React.memo
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Q5. What is shadow DOM ?
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Shadow DOM is a way to encapsulate the styling and structure of a web component, preventing styles from leaking out or clashing with the rest of the page.
• Shadow DOM allows for creating self-contained components with their own DOM tree and styling.

• It helps in preventing styles from the main document affecting the component and vice versa.

• Shadow DOM can be created using the 'attachShadow' method in JavaScript.

• Example: read more
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Q6. What is redux ? Explain its architecture ? How many parameters are there in connect method ?
Ans. 
Redux is a predictable state container for JavaScript apps. It helps manage application state in a single immutable store.
• Redux is a state management library for JavaScript applications.

• It follows a unidirectional data flow architecture.

• Redux architecture consists of actions, reducers, store, and middleware.

• Actions are payloads of information that send data from the application to the store.

• Reducers specify how the app...read more
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Q1. Brief Introduction and projects that I have worked on
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I am a Reactjs Developer with experience in building responsive web applications.
• Developed a responsive e-commerce website using React, Redux, and Material-UI

• Implemented authentication and authorization using Firebase in a social media application

• Optimized performance by lazy loading components and code splitting
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Q2. What is CORS ?
Ans. 
CORS stands for Cross-Origin Resource Sharing, a security feature that allows servers to specify who can access their resources.
• CORS is a security feature implemented by browsers to prevent unauthorized access to resources on a different origin.

• It allows servers to specify which origins are allowed to access their resources using HTTP headers like Access-Control-Allow-Origin.

• CORS is important for protecting sensitive d...read more
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Q3. How can you improve website performance ?
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Improving website performance involves optimizing code, reducing server requests, and utilizing caching techniques.
• Optimize code by removing unnecessary code, minifying and compressing files, and using efficient algorithms.

• Reduce server requests by combining files, using asynchronous loading, and implementing lazy loading for images and videos.

• Utilize caching techniques such as browser caching, server-side caching, and...read more
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Q4. What tools you have used in your previous organization
Ans. 
I have used tools like Git, Webpack, Babel, ESLint, and Redux in my previous organization.
• Git for version control

• Webpack for bundling

• Babel for transpiling

• ESLint for code linting

• Redux for state management
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Q5. Why you are looking for a change ?
Ans. 
Seeking new challenges and opportunities for growth.
• Looking for opportunities to work on more complex projects

• Desire to learn new technologies and expand skill set

• Seeking a more collaborative team environment

• Want to advance career and take on more responsibilities
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Q1. Salary Discussion
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Q1. Reverse of string
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Q2. What is vm ware?
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Q1. It was around Triggers mostly. Use of newMap and stuff
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Q2. Data security implementation in apex like fields and objects to prevent unauthorized DMLS.
Ans. 
Implementing data security in Apex to prevent unauthorized DML operations on fields and objects.
• Use field-level security to restrict access to sensitive fields

• Implement object-level security using profiles and permission sets

• Utilize Apex sharing rules to control record-level access

• Consider using custom validation rules to enforce data integrity

• Implement triggers to enforce additional business logic and security measure
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Q1. Integration practices and summary
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Integration practices involve connecting different systems to share data and functionality.
• Use APIs to connect systems and exchange data

• Implement middleware like MuleSoft or Dell Boomi for seamless integration

• Leverage Salesforce Connect to access external data sources within Salesforce

• Consider batch processing for large data transfers

• Implement error handling and monitoring for robust integrations
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Python code for hashing string , array

Easy aptitude test of 20 mcq in which easy question are asked

Q1. Face to face hr interview
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Q2. Are u comfortable with working locations n timings
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Q1. What are Pillars of OOPs concepts and types of inheritance
Ans. 
Pillars of OOPs concepts are Abstraction, Encapsulation, Inheritance, and Polymorphism. Types of inheritance include Single, Multiple, Multilevel, and Hierarchical.
• Abstraction focuses on hiding the implementation details and showing only the necessary features.

• Encapsulation bundles the data and methods that operate on the data into a single unit.

• Inheritance allows a class to inherit properties and behavior from another...read more
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