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ONPASSIVE Angular Developer Interview Questions, Process, and Tips
ONPASSIVE Angular Developer Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed in Sep 2020. There were 3 interview rounds.
Interview Questionnaire
10 Questions
- Q1. What are life cycle hooks and have you worked on them in your project?
- Ans.
Life cycle hooks are methods that get called at specific stages of a component's life cycle.
ngOnInit() - called after the component is initialized
ngOnChanges() - called when the component's input properties change
ngOnDestroy() - called just before the component is destroyed
Used to perform specific actions at different stages of a component's life cycle
Yes, I have worked on them in my project
- Q2. How can you pass data between parent and child components?, what is component interaction
- Ans.
Passing data between parent and child components is component interaction in Angular.
Use @Input decorator to pass data from parent to child component
Use @Output decorator and EventEmitter to pass data from child to parent component
Use services to share data between components
Use ViewChild to access child component's properties and methods from parent component
- Q3. What are different data bindings in angular
- Ans.
Angular has four types of data bindings: Interpolation, Property binding, Event binding, and Two-way binding.
Interpolation: {{ expression }}
Property binding: [property]="expression"
Event binding: (event)="expression"
Two-way binding: [(ngModel)]="expression"
- Q4. What is lazy loading and write syntax
- Ans.
Lazy loading is a technique in Angular that loads modules or components on-demand, improving performance.
Lazy loading helps reduce initial load time by loading modules or components only when needed
It improves performance by splitting the application into smaller chunks
Syntax: import() function is used to dynamically load modules or components
- Q5. What are @Input() and @Output()?
- Ans.
The @Input() and @Output() are decorators in Angular used for communication between parent and child components.
The @Input() decorator is used to pass data from a parent component to a child component.
The @Output() decorator is used to emit events from a child component to a parent component.
The @Input() property is bound to a value in the parent component template using property binding.
The @Output() property is bound...
- Q6. What is routing and write its syntax
- Ans.
Routing is the process of navigating between different components or pages in an Angular application.
Routing is used to create single-page applications (SPAs) where the content is dynamically loaded without refreshing the entire page.
In Angular, routing is achieved using the RouterModule and the RouterLink directives.
The RouterModule is imported from the @angular/router package and added to the imports array of the app...
- Q7. What are web workers?
- Ans.
Web workers are JavaScript scripts that run in the background, separate from the main browser thread.
Web workers allow for parallel execution of tasks, improving performance and responsiveness.
They can perform computationally intensive tasks without blocking the user interface.
Web workers communicate with the main thread using message passing.
Examples of tasks suitable for web workers include data processing, image man
- Q8. Difference between Observable and Promise?
- Ans.
Observable is for handling multiple values over time, while Promise is for handling a single value.
Observable can emit multiple values over time, while Promise can only emit a single value.
Observable can be cancelled, while Promise cannot be cancelled.
Observable provides operators for transforming and combining data, while Promise does not have such operators.
Observable is lazy, meaning it won't start emitting values u...
- Q9. What are the features of latest typescript version you used in your project
- Ans.
The latest version of TypeScript used in my project has several new features.
Optional Chaining and Nullish Coalescing
Improved performance with faster compilation times
Support for private fields and methods
Higher order type inference from generic constructors
Support for ECMAScript private fields
Improved support for tuples
Smaller bundle sizes with tree shaking
- Q10. How do you call REST APIs in angular?
- Ans.
To call REST APIs in Angular, use the HttpClient module and its methods like get(), post(), put(), delete().
Import the HttpClientModule in your Angular module
Inject the HttpClient service in your component or service
Use the HttpClient methods to make HTTP requests to the REST APIs
Handle the response using observables and subscribe to them
Example: httpClient.get('https://api.example.com/data')
Example: httpClient.post('h
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Selected
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(6 Questions)
- Q1. Brief about your project ?
- Ans.
Developed a web application for managing inventory and sales for a retail store.
Used Angular framework to create a responsive and user-friendly interface.
Implemented features for adding, updating, and deleting products in the inventory.
Integrated with backend APIs to fetch real-time sales data and generate reports.
Utilized Angular Material for designing consistent UI components.
- Q2. What is angular? what is SPA?
- Ans.
Angular is a popular front-end framework for building web applications. SPA stands for Single Page Application.
Angular is a front-end framework developed by Google for building dynamic web applications.
It uses TypeScript for building applications with components, services, and modules.
SPA is a web application that loads a single HTML page and dynamically updates the content as the user interacts with the app.
SPA provid...
- Q3. What is lazy loading?
- Ans.
Lazy loading is a technique in web development where resources are loaded only when needed, improving performance.
Lazy loading helps reduce initial load time by loading resources on demand
It is commonly used in Angular for loading modules, components, or routes asynchronously
Lazy loading can improve user experience by speeding up page load times
- Q4. What is rxjs? in deep?
- Ans.
RxJS is a library for reactive programming using Observables to handle asynchronous data streams.
RxJS stands for Reactive Extensions for JavaScript.
It allows you to work with asynchronous data streams and handle events.
Operators like map, filter, and mergeMap are used to manipulate and combine streams.
Subscriptions are used to listen to and react to changes in the data streams.
Example: Using RxJS to make HTTP requests
- Q5. Angular and javascript basic question?
- Q6. Difference between ?? and ?:
- Ans.
?? is the nullish coalescing operator, while ? is the optional chaining operator in Angular.
?? is used to provide a default value when a variable is null or undefined.
? is used to safely access nested properties of an object without causing errors.
Example: const name = person?.name; // safe access to 'name' property of 'person' object
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Jun 2021. There were 3 interview rounds.
Coding tests consists of three sets. Two among them are from Javascript/Typescript basics, Angular basics (MCQ's finding the output of code they have given). The remaining one is algorithm problems needs to be solved by Javascript/Typescript.
(1 Question)
- Q1. Javascript basics in deep. Latest ECMA script standards. Angular concepts in detail. Scenario based technical questions.
(1 Question)
- Q1. This will be a client round and concentrated on Javascript and Angular concepts in detail along with algorithms and problem solving.
Interview Preparation Tips
2. Have good understanding of Angular application architecture, lazy loading, interceptors, component life cycle hooks, change detection, style isolation, auth guards, directives, pipes, debounce.
Software Engineer Interview Questions & Answers
QualityKiosk Technologies
Avinash Mawle
posted on 31 Jan 2024
I applied via Campus Placement and was interviewed in Dec 2023. There were 3 interview rounds.
It's aptitude and coding test they asked questions related to data interpretation mostly.and one coding question easy one and two SQL questions I got on joins
Topic given by them you have two minutes to think and then discuss with group for 5 minutes. At the end they ask for conclusion from everyone there is group of eight students and they select two or three from them
(5 Questions)
- Q1. Asked about testing
- Q2. What are types of testing
- Ans.
Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.
Unit testing: Testing individual components or functions of the software.
Integration testing: Testing how different components work together.
System testing: Testing the entire system as a whole.
Acceptance testing: Testing to ensure the software meets the requirements.
Regression testing: Testing to ensu...
- Q3. Project related questions
- Q4. Hr related questions
- Q5. Whitebox vs black box testing
- Ans.
Whitebox testing is testing the internal logic of the software, while black box testing is testing the functionality without knowledge of the internal code.
Whitebox testing involves testing the internal structure, code paths, and algorithms of the software.
Black box testing involves testing the functionality, inputs, and outputs of the software without knowledge of the internal code.
Whitebox testing is typically done b...
Skills evaluated in this interview
(1 Question)
- Q1. Oops concepts,interface and abstract class
(2 Questions)
- Q1. String Manipulations
- Q2. Basic DSA questions
Interview Preparation Tips
Software Engineer Interview Questions & Answers
Quantiphi Analytics Solutions Private Limited
Anonymous
posted on 9 Oct 2023
Selected
I applied via Campus Placement and was interviewed before Oct 2022. There were 4 interview rounds.
Aptitude questions and 2 coding questions were asked
(2 Questions)
- Q1. What are indexes in DBMS
- Ans.
Indexes in DBMS are data structures that improve the speed of data retrieval operations on a database table.
Indexes are used to quickly locate data without having to search every row in a table.
They are created on columns in a table to speed up SELECT queries.
Examples of indexes include primary keys, unique keys, and non-unique indexes.
- Q2. ACID propwrties in DBMS
- Ans.
ACID properties in DBMS refer to the key characteristics of a transaction: Atomicity, Consistency, Isolation, and Durability.
Atomicity ensures that all operations in a transaction are completed successfully or none at all.
Consistency ensures that the database remains in a consistent state before and after the transaction.
Isolation ensures that the execution of multiple transactions concurrently does not interfere with ...
(1 Question)
- Q1. Normal behavorial questions
Interview Preparation Tips
- DBMS
- CPP
- Javascript
I applied via Naukri.com and was interviewed in Oct 2022. There were 4 interview rounds.
(1 Question)
- Q1. Angular Life Cycle hooks AOT vs JIT Call stack and event loop ngOnchanges vs ngDocheck @hostlistner component interaction content projection call, apply bind
Duration 30 minutes, topics were related to Javascript and Angular
(1 Question)
- Q1. Write a program to find count of character from a string. Write a program to sort array without using sort method
- Ans.
Program to count characters in a string and sort an array without using sort method
Use a loop to iterate through the string and count each character
For sorting an array, use a loop to compare each element with all other elements and swap if necessary
Implement a sorting algorithm like bubble sort, insertion sort or quick sort
Interview Preparation Tips
I applied via campus placement at Walchand College of Engineering, Sangli and was interviewed in Feb 2022. There were 4 interview rounds.
OOP mcq, 3 coding questions on array and string (easy and medium level),pseudo code etc
(1 Question)
- Q1. They give one real time situation and you have to code it using oops concepts
(1 Question)
- Q1. Questions on OOPS, PROJECTS, DATABASES , OS , AND DBMS
(1 Question)
- Q1. BASIC HR QUESTIONS LIKE WHY DO U WANT TO JOIN THOUGHTWORKS, DO YOU HAVE ANY FUTURE STUDY GOAL ETC
Interview Preparation Tips
BE HONEST
ANY HOW IMPRESS INTERVIEWER IN CODE PAIRING ROUND
I applied via LinkedIn and was interviewed in Jan 2022. There were 2 interview rounds.
(1 Question)
- Q1. Normal Mendix Domain model and Security module question no
(1 Question)
- Q1. Things what you liked to do more often .
Interview Preparation Tips
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