40+ Immanuel Training Academy Interview Questions and Answers

Javascript is single-threaded.

• Javascript runs on a single thread called the event loop.

• This means that it can only execute one task at a time.

• However, it can delegate tasks to other threads using web workers.

• This allows for parallel processing without blocking the main thread.

Position relative is relative to its normal position, while position absolute is relative to its nearest positioned ancestor.

• Position relative moves an element relative to its normal position.

• Position absolute moves an element relative to its nearest positioned ancestor.

• Position absolute elements are taken out of the normal flow of the document.

Functional components are simpler and easier to test, while class components have more features and lifecycle methods.

• Functional components are written as JavaScript functions, while class components are written as ES6 classes.

• Functional components are stateless and do not have their own internal state, while class components can have state.

• Functional components do not have lifecycle methods, while class components have lifecycle methods like componentDidMount and componentDi...read more

The typeof() method in JavaScript returns the data type of a variable or expression.

• typeof() returns a string indicating the type of the operand.

• It can be used with variables, literals, or expressions.

• Common return values include 'number', 'string', 'boolean', 'object', 'function', and 'undefined'.

The states of a promise object are pending, fulfilled, or rejected.

• A promise starts in the pending state.

• When a promise is resolved, it transitions to the fulfilled state.

• If a promise encounters an error, it transitions to the rejected state.

• Once a promise is settled (fulfilled or rejected), it cannot transition to any other state.

z index determines the stacking order of elements on a webpage.

• z index is a CSS property that specifies the stack order of an element

• Elements with a higher z index value will be displayed on top of elements with a lower value

• Default z index value is 0, negative values are allowed

• z index only works on positioned elements (position: relative, absolute, fixed)

No, const does not make the value immutable.

• const only makes the variable itself immutable, not the value it holds.

• For objects and arrays, const prevents reassignment but allows mutation of properties or elements.

• To make a value truly immutable, you can use Object.freeze() or other techniques.

Async/await is a syntax for writing asynchronous code in a synchronous way.

• Async/await is built on top of Promises.

• Async functions always return a Promise.

• Await can only be used inside an async function.

• Async/await makes code easier to read and write compared to using callbacks or Promises.

A Python program in recursion

• Recursion is a technique where a function calls itself to solve a problem

• The function should have a base case to stop the recursion

• The function should have a recursive case to continue the recursion

• Example: Factorial of a number using recursion

• Example: Fibonacci series using recursion

Custom Hooks are reusable functions in React that allow you to extract logic from components.

• Custom Hooks are functions that start with the word 'use' and can call other Hooks if needed.

• They are used to share stateful logic between components without using higher-order components or render props.

• Custom Hooks can be used to handle common tasks like fetching data, managing form state, or subscribing to events.

• They promote code reusability and make it easier to separate concerns...read more

To import views in Django, you need to create a views.py file and import it in urls.py

• Create a views.py file in your Django app directory

• Define your views in the views.py file

• Import your views in urls.py using the 'from . import views' syntax

• Map your views to URLs in urls.py using the 'path()' function

Closures, promises, callbacks, and asynchronous programming are all important concepts in Node JS development.

• Closures are functions that have access to variables in their outer scope.

• Promises are objects that represent the eventual completion or failure of an asynchronous operation.

• Callbacks are functions that are passed as arguments to other functions and are executed when the other function completes.

• Asynchronous programming allows multiple tasks to be executed concurrentl...read more

useState() is a React hook that allows functional components to manage state.

• useState() is used to declare a state variable in a functional component.

• It returns an array with two elements: the current state value and a function to update the state.

• The initial state value is passed as an argument to useState().

• The state can be updated by calling the update function returned by useState().

• useState() can be used multiple times in a component to manage multiple state variables.

Props are read-only properties passed from a parent component to a child component in React.

• Props allow data to be passed down the component tree.

• Props are immutable and cannot be modified by the child component.

• Props can be used to customize the behavior or appearance of a component.

• Props are accessed using the dot notation, like this.props.propName.

• Props can be any type of data, including strings, numbers, objects, or functions.

Job description outlines duties and responsibilities of a job, while job specification outlines qualifications and skills required for the job.

• Job description explains what the job entails, while job specification explains what qualifications and skills are needed to perform the job.

• Job description is a summary of the job, while job specification is a detailed list of qualifications and skills required for the job.

• Job description is used for recruitment and selection, while j...read more

Models in Django are Python classes that define the structure of the database tables.

• Models are used to create, read, update and delete data from the database.

• They define the fields and their types, relationships between tables, and constraints.

• Models can be created using the Django ORM (Object-Relational Mapping) or by writing SQL.

• Example: class Book(models.Model): title = models.CharField(max_length=100) author = models.ForeignKey(Author, on_delete=models.CASCADE)

• Models are...read more

Program to generate a particular series

• Define the series pattern

• Use loops to generate the series

• Store the series in an array

• Print the array

Function to determine if a number is prime or not.

• Check if the number is less than 2, return False if so

• Iterate from 2 to the square root of the number, checking for divisibility

• If no divisors found, return True (number is prime)

Create a function to find the least repeating consecutive character in a string.

• Iterate through the string and keep track of consecutive characters and their counts

• Find the character with the least count of consecutive repetitions

• Return the character with the least count

Call by value passes a copy of the variable's value, while call by reference passes a reference to the variable's memory location.

• Call by value passes a copy of the variable's value, so changes made to the parameter inside the function do not affect the original variable.

• Call by reference passes a reference to the variable's memory location, so changes made to the parameter inside the function affect the original variable.

• In Python, all function arguments are passed by refere...read more

Intercepter and class are both used in JavaScript, but serve different purposes.

• Intercepter is used to intercept and modify HTTP requests and responses.

• Class is used to create objects with properties and methods.

• Intercepter is commonly used in frameworks like Angular and React.

• Class is a fundamental concept in object-oriented programming.

• Intercepter can be used to add authentication headers to requests.

• Class can be used to create multiple instances of an object with different...read more

Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their scope.

• Variable declarations are hoisted but not their initializations.

• Function declarations are fully hoisted.

• Hoisting can lead to unexpected behavior if not understood properly.

Maintain employee work by setting clear expectations, providing feedback, recognizing achievements, and offering growth opportunities.

• Set clear expectations and goals for each employee

• Provide regular feedback and coaching to help employees improve

• Recognize and reward achievements to motivate employees

• Offer growth opportunities such as training and development programs

• Create a positive work environment that fosters collaboration and teamwork

Asynchronous behavior in JavaScript can be achieved using callbacks, promises, and async/await.

• Callbacks: Functions passed as arguments to be executed once an asynchronous operation is completed.

• Promises: Objects representing the eventual completion or failure of an asynchronous operation.

• Async/Await: Syntactic sugar built on top of promises to write asynchronous code that looks synchronous.

Freelance bidding apps include Upwork, Freelancer, Fiverr, Guru, and PeoplePerHour.

• Create a strong profile showcasing your skills and experience

• Search for relevant projects and read the project description carefully

• Submit a competitive bid that highlights your qualifications and offers a fair price

• Communicate promptly and professionally with the client

• Deliver high-quality work on time and within budget

Yes, I am planning to pursue a Master's degree in Human Resource Management.

• I have already researched various universities and programs that align with my career goals.

• I plan to continue working while pursuing my degree part-time.

• I believe that further education will enhance my skills and knowledge in the field of HR.

• I am also interested in attending conferences and workshops to stay up-to-date with industry trends.

Reverse a string without using new variable

• Use two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move the pointers towards each other until they meet in the middle

SQL is a programming language used for managing and manipulating relational databases.

• SQL stands for Structured Query Language

• It is used to retrieve and manipulate data in relational databases

• Common SQL commands include SELECT, INSERT, UPDATE, DELETE

• Examples of SQL database systems include MySQL, PostgreSQL, Oracle

Recruitment process involves sourcing, screening, interviewing, and selecting candidates for a job.

• Identify job opening and create job description

• Source candidates through job portals, social media, referrals, etc.

• Screen resumes and shortlist candidates

• Conduct interviews and assessments

• Select the best candidate and make an offer

• Onboard the new hire

Remove duplicates from an array

• Use Set to remove duplicates

• Convert Set back to array

• Use filter() to remove duplicates

• Use indexOf() to check for duplicates