CinchiT Solutions VBA Developer Interview Questions and Answers

Javascript array questions like palindrom and others with aptitude

Q1. Skill related technical questions
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Q2. How to share data in components react
Ans. 
Data can be shared between components in React using props, context, or state management libraries like Redux.
• Use props to pass data from parent to child components

• Use context to share data across multiple components without passing props manually

• Use state management libraries like Redux to manage global state and share data between components
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Q3. Prop drilling explain in react
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Prop drilling is the process of passing data through multiple levels of components in React.
• Prop drilling occurs when a component needs to pass data to a deeply nested child component.

• It can lead to code that is hard to maintain and understand.

• One way to avoid prop drilling is by using Context API or Redux for state management.
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Q4. Redux flow explain
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Redux is a predictable state container for JavaScript apps.
• Redux stores the entire state of an application in a single immutable object.

• State changes are made by dispatching actions, which are plain JavaScript objects.

• Reducers specify how the application's state changes in response to actions.

• Redux flow: Action -> Reducer -> Store -> View
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Q1. Previous project discussion
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Q1. What is the closure in JS?
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Closure in JS is a function that retains access to variables from its parent scope even after the parent function has finished executing.
• Closure allows functions to have access to variables from an outer function even after the outer function has finished executing.

• It is created whenever a function is defined within another function, and the inner function has access to the outer function's variables.

• Closures are commo...read more
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Q2. Explain about web worker ?
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Web workers allow running JavaScript code in the background without blocking the main thread.
• Web workers are separate JavaScript files that run in the background.

• They allow for multi-threading in web applications.

• Web workers can perform tasks like heavy calculations or network requests without affecting the main UI thread.

• Communication between web workers and the main thread is done through message passing.
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Q3. How to pass props in React
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Props in React are passed from parent components to child components to share data and functionality.
• Props are passed as attributes in JSX when rendering a component

• Props can be accessed in the child component using 'this.props'

• Props are read-only and should not be modified directly
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Q1. PLSQL basic to advanced.
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Q2. Explain collections in details?
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Collections in PL/SQL are data structures used to store multiple elements of the same data type.
• Collections can be nested tables, varrays, or associative arrays.

• Nested tables are like one-dimensional arrays with no upper bounds.

• Varrays are like arrays with a maximum size that is specified at declaration.

• Associative arrays are like lookup tables where each element is accessed using a unique key.

• Collections can be used t...read more
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Q3. Bulk collect concept
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Bulk collect is a feature in PL/SQL that allows for fetching multiple rows of data at once.
• Improves performance by reducing context switches between the PL/SQL engine and SQL engine

• Reduces network traffic by fetching multiple rows in a single round trip

• Can be used with SELECT INTO or FETCH INTO statements
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Q4. Decode and case
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Q5. Tuning of sql and some sql code
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Bank product related questions and carrer expericnce .

Q1. What is AOT And JIT How angular different from react Route guard
Ans. 
AOT (Ahead-of-Time) and JIT (Just-in-Time) are compilation techniques used in Angular. Angular and React differ in their architecture and data binding approach. Route guards in Angular are used to control access to routes.
• AOT compilation in Angular converts TypeScript code into efficient JavaScript code during the build process, resulting in faster rendering and smaller bundle sizes.

• JIT compilation in Angular compiles ...read more
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Q2. How angular application build
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Angular applications are built using the Angular CLI, which provides a command-line interface for creating, building, and serving Angular projects.
• Angular applications are built using the Angular CLI (Command Line Interface)

• The Angular CLI provides commands for creating new projects, generating components, services, modules, etc.

• To build an Angular application, you can use the 'ng build' command which compiles the appl
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Q3. Project discussion
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Moderate to difficult

Q1. DSA questions based on Dynamic programming
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HTML CSS javascript jQuery

Q1. Explain about about you and background and your experiences and expertise areas. Difficulties or challenges that we faced in our last project What is performance tuning in Teradata and how to do one? Whet...read more
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Q1. What are your salary expectations?
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Q1. Explain about your experience and expertise? Tell about yourself?
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Q1. Tell about yourself? Explain your last project and the challenges that you faced and if any appreciation you got from clients?
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Q1. About all lifecycle,hooks, virtual Dom questions on react js
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Q2. Explain about Jwt and related token based questions.
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Q3. Redux work flow kind of questions.
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Q4. Java class , interface, abstraction kind of questions.
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JavaScript coding questions using map, filter, reduce.

React hooks coding example s.

Q1. What were ur leaning in ur last project?
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Q2. How was ur role and responsibilities. Questions about development process and testing methods.
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Q3. Are u willing to learn new skills?
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