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Amdocs Front end Developer Interview Questions, Process, and Tips

Updated 6 Jan 2022

Amdocs Front end Developer Interview Experiences

1 interview found

I was interviewed in Oct 2021.

Round 1 - Video Call 

(4 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round consisted of some standard questions related to HTML , CSS , JS and basic Frontend develeoper practices .

  • Q1. What are the features of HTML5?
  • Ans. 

    HTML5 is the latest version of the HTML standard with new features for web development.

    • Support for multimedia elements like <video> and <audio>

    • Canvas and SVG for graphics and animations

    • Improved form controls and validation

    • Offline storage capabilities with Local Storage and IndexedDB

    • Geolocation API for location-based services

  • Answered by AI
  • Q2. Can you explain the CSS Box Model?
  • Ans. 

    The CSS Box Model is a fundamental concept in CSS that defines the layout and spacing of elements on a webpage.

    • The Box Model consists of content, padding, border, and margin.

    • Content: The actual content of the box, such as text or images.

    • Padding: Space between the content and the border.

    • Border: The border surrounding the padding and content.

    • Margin: Space outside the border, separating the element from other elements.

    • Exa...

  • Answered by AI
  • Q3. What is prototype chaining in JavaScript?
  • Ans. 

    Prototype chaining in JavaScript is the mechanism by which objects inherit properties and methods from other objects.

    • In JavaScript, each object has a prototype property, which points to another object. When a property or method is accessed on an object, JavaScript will look for it in the object itself first, and then in its prototype chain.

    • If the property or method is not found in the object, JavaScript will continue t...

  • Answered by AI
  • Q4. What are media elements in HTML?
  • Ans. 

    Media elements in HTML are used to embed audio and video content on a webpage.

    • Media elements include <audio> and <video> tags in HTML.

    • They allow for the playback of audio and video files directly on a webpage.

    • Attributes like src, controls, autoplay, and loop can be used to customize the behavior of media elements.

    • Example: <video src='video.mp4' controls></video>

  • Answered by AI
Round 2 - Video Call 

(6 Questions)

Round duration - 70 Minutes
Round difficulty - Medium

This was a preety intense round revolving mainly around the core concepts of JavaScript and React . I was confident about my skills in JavaScript and React as I already had some projects in JS and React and I also completed the Guided Path of JS and React in CodeStudio which boosted my preparation and helped me crack these Frontend Interviews.

  • Q1. 

    Swap Two Numbers Problem Statement

    Given two integers a and b, your task is to swap these numbers and output the swapped values.

    Input:

    The first line contains a single integer 't', representing the num...
  • Ans. 

    Swap two numbers 'a' and 'b' and output the swapped values.

    • Create a temporary variable to store one of the numbers before swapping

    • Assign the value of 'a' to 'b' and the temporary variable to 'a'

    • Output the swapped values as 'b' followed by 'a'

  • Answered by AI
  • Q2. 

    Sort Array Problem Statement

    Given an array consisting of 'N' positive integers where each integer is either 0, 1, or 2, your task is to sort the given array in non-decreasing order.

    Input:

    Each input st...
  • Ans. 

    Sort an array of 0s, 1s, and 2s in non-decreasing order.

    • Use a counting sort algorithm to count the occurrences of 0s, 1s, and 2s in the array.

    • Then reconstruct the array by placing the counted elements in order.

    • Time complexity of the counting sort algorithm is O(N).

  • Answered by AI
  • Q3. Can you explain promises and their three states?
  • Ans. 

    Promises are objects representing the eventual completion or failure of an asynchronous operation.

    • Promises have three states: pending, fulfilled, and rejected.

    • Pending: initial state, neither fulfilled nor rejected.

    • Fulfilled: operation completed successfully.

    • Rejected: operation failed.

    • Promises can be chained using .then() to handle success and failure.

    • Example: const promise = new Promise((resolve, reject) => { ... })

  • Answered by AI
  • Q4. What are callbacks in JavaScript?
  • Ans. 

    Callbacks in JavaScript are functions passed as arguments to other functions, to be executed later.

    • Callbacks are commonly used in asynchronous operations, such as event handling or AJAX requests.

    • They allow for more flexible and dynamic programming, by defining behavior that should happen after a certain event or task is completed.

    • Example: setTimeout function in JavaScript takes a callback function as an argument to be

  • Answered by AI
  • Q5. What is the Same-origin policy?
  • Ans. 

    Same-origin policy is a security measure in web browsers that restricts how a document or script loaded from one origin can interact with a resource from another origin.

    • It prevents a web page from making requests to a different domain than the one it was loaded from.

    • It helps protect user data and prevent malicious attacks like cross-site scripting (XSS).

    • Cross-origin resource sharing (CORS) headers can be used to relax

  • Answered by AI
  • Q6. Can you explain the lifecycle of components in React?
  • Ans. 

    Components in React go through various stages like mounting, updating, and unmounting.

    • Components are created and inserted into the DOM during the mounting phase.

    • During the updating phase, components can re-render due to changes in props or state.

    • Components are removed from the DOM during the unmounting phase.

    • Lifecycle methods like componentDidMount, componentDidUpdate, and componentWillUnmount are used to perform actio

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 Minutes
Round difficulty - Easy

This was a typical HR round with some standard Behavioral questions like my interests, weaknesses, strengths, family background, are you willing to relocate or travel , why Amdocs, CEO of Amdocs etc.

  • Q1. Why do you want to work at Amdocs?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAAmdocs interview preparation:Topics to prepare for the interview - HTML , CSS , JavaScript , React , NodeJS , Basic Data Structures and AlgorithmsTime required to prepare for the interview - 4 MonthsInterview preparation tips for other job seekers

Tip 1 : Do at-least 2 good projects and you must know every bit of them.
Tip 2 : Understand the fundamentals of JavaScript as they are asked very often.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed before Dec 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 360 minutes
Round difficulty - Medium

Basically TCS conduct its flagship event named as CODEVITA . And it offers Internship to prefinal (3rd )year students .

  • Q1. 

    Allocate Books Problem Statement

    Given an array of integers arr, where arr[i] represents the number of pages in the i-th book, and an integer m representing the number of students, allocate all the books ...

  • Ans. 

    Allocate books to students in a way that minimizes the maximum number of pages assigned to a student.

    • Iterate through possible allocations and calculate the maximum pages assigned to a student.

    • Find the minimum of these maximums to get the optimal allocation.

    • Return the minimum pages allocated in each test case, or -1 if not possible.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaMust be doing B.TECHTata Consultancy Services (TCS) interview preparation:Topics to prepare for the interview - Data Structure , Algorithms ,DBMS , OOPs ,OSTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : Good understanding of Data Structure and Algorithms 
Tip 2 : Be clear in your Core Subjects.
Tip 3 : Do at least 1 good Project .
Tip 4 : Be humble and speak truth .

Application resume tips for other job seekers

Tip 1 : Simple and Crisp .
Tip 2 : Do host your project and mention the link in the resume .
Tip 3 : Single Page

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.

Round 1 - Technical 

(14 Questions)

  • Q1. Let var const in JavaScript
  • Ans. 

    var and const are used to declare variables in JavaScript, with var being mutable and const being immutable.

    • var is used to declare variables that can be reassigned and updated

    • const is used to declare variables that cannot be reassigned or updated

    • let is another keyword used for declaring variables, similar to var but with block scope

  • Answered by AI
  • Q2. Error boundary and how to handle
  • Ans. 

    Error boundary is a React component that catches JavaScript errors anywhere in a component tree and logs those errors.

    • Error boundaries are React components that catch JavaScript errors in their child component tree.

    • They are used to prevent the entire UI from crashing due to a single error.

    • Error boundaries work like a JavaScript catch {} block, but for components.

    • They are defined using componentDidCatch lifecycle method

  • Answered by AI
  • Q3. Event.bind and event.property
  • Q4. Use of never in typescript
  • Ans. 

    The 'never' type in TypeScript represents a value that will never occur.

    • Used to indicate that a function will not return a value

    • Commonly used in union types to exclude certain values

    • Helps catch potential errors at compile time

  • Answered by AI
  • Q5. What hooks you have used
  • Ans. 

    I have used React hooks such as useState, useEffect, useContext, and useRef in my projects.

    • useState

    • useEffect

    • useContext

    • useRef

  • Answered by AI
  • Q6. What is difference between use reducer and use state
  • Ans. 

    useReducer is preferred for managing complex state logic, while useState is simpler for basic state management.

    • useReducer is more suitable for managing complex state logic and multiple state values

    • useState is simpler and more straightforward for basic state management with a single value

    • useReducer allows for more organized and centralized state updates through actions and reducers

    • useState is commonly used for simple co

  • Answered by AI
  • Q7. Why we use state and props
  • Q8. How you will pass data from parent to child
  • Ans. 

    Data can be passed from parent to child components in React using props.

    • Pass data as props from parent component to child component

    • Use state management libraries like Redux or Context API for complex data sharing

    • Use callback functions to pass data from child to parent components

  • Answered by AI
  • Q9. Write your own custom hook
  • Ans. 

    Custom hook to fetch data from an API

    • Create a function that uses the useState and useEffect hooks

    • Use the fetch API to make a request to the desired endpoint

    • Return the fetched data and loading state in an array

  • Answered by AI
  • Q10. Explain map filter and reduce functions
  • Ans. 

    Map, filter, and reduce are higher-order functions in JavaScript used to manipulate arrays.

    • Map: Transforms each element in an array and returns a new array with the transformed elements.

    • Example: [1, 2, 3].map(num => num * 2) returns [2, 4, 6].

    • Filter: Returns a new array with elements that pass a certain condition.

    • Example: [1, 2, 3].filter(num => num > 1) returns [2, 3].

    • Reduce: Applies a function against an accumulator ...

  • Answered by AI
  • Q11. How you can clone an object
  • Ans. 

    To clone an object in JavaScript, you can use the spread operator or Object.assign() method.

    • Use the spread operator to create a shallow copy of an object: const clonedObj = { ...originalObj };

    • Use Object.assign() method to create a shallow copy of an object: const clonedObj = Object.assign({}, originalObj);

    • For deep cloning, you can use libraries like Lodash or write a custom function to recursively clone nested objects.

  • Answered by AI
  • Q12. What are the three stages of event propagation and how to handle it
  • Ans. 

    Event propagation consists of three stages: capturing, target, and bubbling.

    • Capturing phase: Events are captured from the outermost element to the target element.

    • Target phase: Event reaches the target element where the event originated.

    • Bubbling phase: Events bubble up from the target element to the outermost element.

  • Answered by AI
  • Q13. How to handle errors in your react application
  • Ans. 

    Errors in a React application can be handled by using error boundaries, try-catch blocks, and displaying error messages to users.

    • Use error boundaries to catch errors in components and display a fallback UI

    • Wrap code that may throw errors in try-catch blocks to handle exceptions

    • Use libraries like React Error Boundary to easily implement error handling

    • Display error messages to users to inform them about the issue and poss

  • Answered by AI
  • Q14. Write code to call fake api and display the title where category is “some category “

Skills evaluated in this interview

I applied via Approached by Company and was interviewed in Feb 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Basics of react and JavaScript

Interview Preparation Tips

Interview preparation tips for other job seekers - Try to Give examples Supporting your answers

I applied via LinkedIn

Interview Questionnaire 

5 Questions

  • Q1. 1.what is strict Mode in react. 2.Virtual Dom. 3,react and html difference
  • Q2. What is redux
  • Ans. 

    Redux is a predictable state container for JavaScript apps.

    • Redux is a library for managing application state

    • It provides a centralized store for all the state of an application

    • It uses a single source of truth principle

    • It allows for predictable state changes through actions and reducers

    • It is commonly used with React for building complex UIs

  • Answered by AI
  • Q3. What is jquery? 2.explain architecture of your project.
  • Ans. 

    jQuery is a fast, small, and feature-rich JavaScript library.

    • jQuery simplifies HTML document traversing, event handling, and animating.

    • It provides a set of methods for AJAX interactions and DOM manipulation.

    • jQuery is cross-platform and supports a wide range of browsers.

    • It has a large community and a vast number of plugins available.

    • Project architecture depends on the specific project and its requirements.

  • Answered by AI
  • Q4. Form validation in react
  • Ans. 

    Form validation in React ensures user input is correct before submission.

    • Use controlled components to manage form state

    • Create validation functions to check input

    • Display error messages for invalid input

    • Disable submit button until form is valid

    • Consider using a library like Formik or Yup for easier validation

  • Answered by AI
  • Q5. React hooks explanation
  • Ans. 

    React hooks are functions that allow functional components to use state and lifecycle methods.

    • Hooks were introduced in React 16.8

    • useState() is a hook that allows state to be used in functional components

    • useEffect() is a hook that allows lifecycle methods to be used in functional components

    • Custom hooks can be created to reuse stateful logic across components

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Make sure u have entered proper information in your resume,mostly they asked the questions related to previous projects working and the technologies which we had mentioned in resume, always study own resume and prepare accourding to that.

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed before Feb 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

It was easy not that hard

Round 2 - Coding Test 

Coding question were on medium level

Round 3 - Technical 

(1 Question)

  • Q1. Be prepared for project question
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all tips
Round 2 - Technical 

(3 Questions)

  • Q1. How to handle state in functional components.
  • Ans. 

    State in functional components can be managed using the useState hook in React.

    • Use the useState hook to declare state variables in functional components.

    • useState returns an array with the current state value and a function to update that value.

    • Example: const [count, setCount] = useState(0);

    • State variables should be immutable, so always use the setter function to update them.

  • Answered by AI
  • Q2. What is event loop in javascript.
  • Ans. 

    Event loop in JavaScript is responsible for handling asynchronous operations by executing callback functions in a non-blocking way.

    • Event loop is a mechanism that allows JavaScript to perform non-blocking operations.

    • It continuously checks the call stack and the callback queue to see if there are any functions that need to be executed.

    • If the call stack is empty, it takes the first function from the callback queue and pus...

  • Answered by AI
  • Q3. What is hosting in Javascript
  • Ans. 

    Hosting in JavaScript refers to the process of declaring a variable or function before it is used in the code.

    • Hosting allows you to use variables and functions before they are declared in the code.

    • Variables are hoisted to the top of their scope, while functions are fully hoisted.

    • Example: console.log(myVar); var myVar = 10; This will not throw an error because 'myVar' is hoisted to the top of the scope.

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Walk-in and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. How to comment in javascript
  • Ans. 

    Comments in JavaScript are used to explain the code and are not executed by the browser.

    • Use // for single line comments

    • Use /* */ for multi-line comments

    • Comments help other developers understand your code

  • Answered by AI
  • Q2. Write code of async-await
  • Ans. 

    Async-await is a feature in JavaScript that allows for asynchronous programming using promises.

    • Use the 'async' keyword before a function to make it asynchronous

    • Use the 'await' keyword inside an async function to wait for a promise to resolve

    • Async-await simplifies asynchronous code and makes it easier to read and maintain

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Find reverse string using array

Round 2 - Technical 

(1 Question)

  • Q1. What are Routing Guards?
  • Ans. 

    Routing guards are used in Angular to control access to certain routes based on certain conditions.

    • Routing guards are used to protect routes in Angular applications.

    • They can be used to control access based on authentication status, user roles, etc.

    • There are different types of routing guards like CanActivate, CanActivateChild, CanDeactivate, CanLoad.

    • Example: CanActivate guard can be used to check if a user is authentica

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-

I applied via Job Portal and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Difference between foreach and map
  • Ans. 

    foreach is used to iterate over an array without returning a new array, while map creates a new array by applying a function to each element.

    • foreach does not return a new array, while map does

    • foreach does not modify the original array, while map creates a new array

    • foreach is used for iterating over elements, while map is used for transforming elements

    • Example: foreach - array.forEach(item => console.log(item)), map - ar

  • Answered by AI
  • Q2. Explain rxjs operators
  • Ans. 

    RxJS operators are functions that enable complex asynchronous operations and data manipulation in reactive programming.

    • RxJS operators are used to transform, filter, combine, and create observables.

    • Operators can be categorized into creation operators, transformation operators, filtering operators, combination operators, and utility operators.

    • Examples of operators include map, filter, mergeMap, switchMap, debounceTime, a

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - good

Skills evaluated in this interview

Amdocs Interview FAQs

How to prepare for Amdocs Front end Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Amdocs. The most common topics and skills that interviewers at Amdocs expect are Front End, HTML, Java, Javascript and UI Development.

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based on 3 reviews

2.6/5

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1.9

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1.2

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1.2

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