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Navigators Software Angular Developer Interview Questions and Answers
10 Interview questions
Interceptors are a feature in Angular that allow you to intercept and modify HTTP requests and responses.
Interceptors can be used to add headers, handle errors, or modify requests before they are sent.
They are implemented as services that implement the HttpInterceptor interface.
Multiple interceptors can be chained together to perform different tasks.
Example: Adding an authorization token to every outgoing request.
Pure pipes are stateless and do not change the input data, while impure pipes can have side effects and change the input data.
Pure pipes are faster as they only run when a pure change to the input data is detected.
Impure pipes can have side effects like making HTTP requests or modifying the input data directly.
Pure pipes are marked with the @Pipe decorator with pure set to true, while impure pipes have pure set to...
ActivatedRoute is used to access the current route's information.
It provides access to route parameters, query parameters, and fragment parameters.
It can be used to subscribe to route parameter changes.
It can be injected into a component or service.
Example: accessing a route parameter in a component using snapshot: this.route.snapshot.params['id']
Example: subscribing to route parameter changes in a component: this...
Data can be shared between components using services, input/output bindings, and state management libraries.
Create a service to hold the data and inject it into the components that need it
Use input/output bindings to pass data between parent and child components
Use state management libraries like NgRx or Redux to manage shared data across components
Use a shared module to import and export components that need to s...
Observables are streams of data that can be observed, while Subjects are both observers and observables.
Observables are unicast, meaning each subscribed observer receives its own stream of data.
Subjects are multicast, meaning they can have multiple observers and share the same stream of data.
Observables are cold, meaning they start emitting data only when subscribed to.
Subjects are hot, meaning they start emitting...
There are four types of bindings in Angular.
Interpolation binding
Property binding
Event binding
Two-way binding
Improving performance of an application can be achieved through various ways.
Optimizing code by reducing unnecessary calculations and improving algorithms
Caching data to reduce database queries and network requests
Lazy loading modules and components to improve initial load time
Minifying and compressing files to reduce file size and improve loading speed
Using server-side rendering to improve initial rendering time
I...
Lifecycle hooks are methods that allow you to tap into the lifecycle of Angular components and perform actions at specific stages.
ngOnInit() - called after the component is initialized
ngOnChanges() - called when the component's input properties change
ngDoCheck() - called during every change detection cycle
ngAfterContentInit() - called after content is projected into the component
ngAfterContentChecked() - called af...
Change Detection is a mechanism in Angular that tracks changes in the application's data and updates the view accordingly.
Angular uses Zone.js to detect changes in the application's data.
Change Detection can be triggered manually or automatically.
There are two types of Change Detection strategies in Angular: Default and OnPush.
Default strategy checks for changes in all components and their child components.
OnPush ...
Dependency Injection is a design pattern used in Angular to inject dependencies into components and services.
Angular uses a hierarchical injector to provide dependencies
Dependencies can be injected using constructor injection or property injection
Services can be provided at the component level or at the module level
Angular provides a number of built-in services that can be injected
Custom services can also be creat...
Navigators Software Angular Developer Interview Experiences
2 interviews found
Selected
I applied via Naukri.com and was interviewed in Mar 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What is interceptor?
- Ans.
Interceptors are a feature in Angular that allow you to intercept and modify HTTP requests and responses.
Interceptors can be used to add headers, handle errors, or modify requests before they are sent.
They are implemented as services that implement the HttpInterceptor interface.
Multiple interceptors can be chained together to perform different tasks.
Example: Adding an authorization token to every outgoing request.
- Q2. Difference between pure pipe and impure pipe?
- Ans.
Pure pipes are stateless and do not change the input data, while impure pipes can have side effects and change the input data.
Pure pipes are faster as they only run when a pure change to the input data is detected.
Impure pipes can have side effects like making HTTP requests or modifying the input data directly.
Pure pipes are marked with the @Pipe decorator with pure set to true, while impure pipes have pure set to fals...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Other and was interviewed in Sep 2020. There were 4 interview rounds.
Interview Questionnaire
8 Questions
- Q1. What are the ways of improving performance of an application?
- Ans.
Improving performance of an application can be achieved through various ways.
Optimizing code by reducing unnecessary calculations and improving algorithms
Caching data to reduce database queries and network requests
Lazy loading modules and components to improve initial load time
Minifying and compressing files to reduce file size and improve loading speed
Using server-side rendering to improve initial rendering time
Implem...
- Q2. What are the lifecycle hooks in Angular?
- Ans.
Lifecycle hooks are methods that allow you to tap into the lifecycle of Angular components and perform actions at specific stages.
ngOnInit() - called after the component is initialized
ngOnChanges() - called when the component's input properties change
ngDoCheck() - called during every change detection cycle
ngAfterContentInit() - called after content is projected into the component
ngAfterContentChecked() - called after e...
- Q3. Dependency Injection in Angular
- Ans.
Dependency Injection is a design pattern used in Angular to inject dependencies into components and services.
Angular uses a hierarchical injector to provide dependencies
Dependencies can be injected using constructor injection or property injection
Services can be provided at the component level or at the module level
Angular provides a number of built-in services that can be injected
Custom services can also be created an...
- Q4. How many types of bindings are there?
- Ans.
There are four types of bindings in Angular.
Interpolation binding
Property binding
Event binding
Two-way binding
- Q5. What is the use of ActivatedRoute?
- Ans.
ActivatedRoute is used to access the current route's information.
It provides access to route parameters, query parameters, and fragment parameters.
It can be used to subscribe to route parameter changes.
It can be injected into a component or service.
Example: accessing a route parameter in a component using snapshot: this.route.snapshot.params['id']
Example: subscribing to route parameter changes in a component: this.rout...
- Q6. What is the difference between Observables and Subject?
- Ans.
Observables are streams of data that can be observed, while Subjects are both observers and observables.
Observables are unicast, meaning each subscribed observer receives its own stream of data.
Subjects are multicast, meaning they can have multiple observers and share the same stream of data.
Observables are cold, meaning they start emitting data only when subscribed to.
Subjects are hot, meaning they start emitting data...
- Q7. What is Change Detection?
- Ans.
Change Detection is a mechanism in Angular that tracks changes in the application's data and updates the view accordingly.
Angular uses Zone.js to detect changes in the application's data.
Change Detection can be triggered manually or automatically.
There are two types of Change Detection strategies in Angular: Default and OnPush.
Default strategy checks for changes in all components and their child components.
OnPush strat...
- Q8. How to share data from different components?
- Ans.
Data can be shared between components using services, input/output bindings, and state management libraries.
Create a service to hold the data and inject it into the components that need it
Use input/output bindings to pass data between parent and child components
Use state management libraries like NgRx or Redux to manage shared data across components
Use a shared module to import and export components that need to share ...
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Software Developer Interview Questions & Answers
Apmosys Technologies
Anonymous
posted on 12 Apr 2023
Selected
I applied via Recruitment Consulltant and was interviewed before Apr 2022. There were 3 interview rounds.
25 MCQ questions online with time limit
Create webapp . Frontend, Backend , data encryption
Software Developer Interview Questions & Answers
Apmosys Technologies
Anonymous
posted on 4 Nov 2023
I appeared for an interview in Oct 2023.
Easy to medium
profit and loss questions
Permutation and combination
Easy to medium
45 mins
(4 Questions)
- Q1. Basic concept of Oops Java basic
- Q2. Constructor Overloading
- Q3. Operator overloading in Java?
- Ans.
Operator overloading allows operators to be redefined for user-defined types in Java.
Operator overloading is not supported in Java as it can lead to ambiguity and confusion.
Java does not allow custom operators to be defined or existing operators to be overloaded.
Instead of operator overloading, Java provides method overloading where methods with the same name but different parameters can be defined.
- Q4. Define java and it's features
- Ans.
Java is a high-level, object-oriented programming language known for its platform independence and robust features.
Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)
It is object-oriented, allowing for modular and reusable code
Java is known for its robust standard library, which includes tools for networking, I/O, and more
It supports multithreading, allowing for concurrent e...
(1 Question)
- Q1. Introduction Present events
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Apmosys Technologies
Mityaprangya Das
posted on 24 Sep 2024
I applied via Campus Placement
Easy aptitude, 30 min with 20 question
Interview Preparation Tips
Software Developer Interview Questions & Answers
Apmosys Technologies
Anonymous
posted on 25 Sep 2024
Selected
I applied via Referral and was interviewed before Sep 2023. There were 2 interview rounds.
Simple aptitude questions.
(2 Questions)
- Q1. What's your strength ?
- Ans.
My strength lies in my problem-solving skills and ability to learn quickly.
Strong problem-solving skills
Quick learner
Adaptability to new technologies
Ability to work well under pressure
- Q2. Are you willing to work under pressure?
- Ans.
Yes, I am comfortable working under pressure and have experience delivering high-quality work in tight deadlines.
I have successfully completed projects with tight deadlines in my previous roles.
I am able to prioritize tasks effectively and remain focused under pressure.
I thrive in challenging situations and see them as opportunities to showcase my skills.
I have experience working on urgent bug fixes and resolving issue...
Interview Preparation Tips
Software Developer Interview Questions & Answers
BigStep Technologies
Anonymous
posted on 19 Nov 2021
I applied via Naukri.com and was interviewed in May 2021. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. To find if a number is Prime or not and optimise your written code.
- Ans.
Check if a number is prime and optimize the code.
Start by checking if the number is less than 2, in which case it is not prime.
Iterate from 2 to the square root of the number and check if any of them divide the number evenly.
If a divisor is found, the number is not prime. Otherwise, it is prime.
- Q2. Css question related to flex box, Grid and cross browser compatibility
- Q3. To call an API in react and optimise your written code.
- Ans.
To optimise API calls in React, use asynchronous functions and caching techniques.
Use async/await to handle API calls
Implement caching to reduce network requests
Use memoization to avoid unnecessary re-renders
Consider using a state management library like Redux
Use performance profiling tools like React DevTools
- Q4. Questions on JS concepts like Objects and Prototype Inheritance.
Interview Preparation Tips
Skills evaluated in this interview
Software Developer Interview Questions & Answers
BigStep Technologies
Anonymous
posted on 9 Feb 2022
I applied via Campus Placement
Online Coding Test included some aptitude questions, technical questions followed by 3 coding questions
(1 Question)
- Q1. My technical interview included an introduction about myself followed by my background, projects I've made, internships I've done, and in which language I was comfortable. and the interviewer asked me to w...
Interview Preparation Tips
Koushik
Selected
I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.
Aptitude questions with some basic coding questions
They have given 3 coding questions and some pseudo codings
(2 Questions)
- Q1. Tell about your self
- Q2. Some coding questions
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
(2 Questions)
- Q1. First round was technical where they asked me previously on what projects I have worked
- Q2. Previous projects
- Ans.
I have worked on various projects including e-commerce websites, CRM systems, and data visualization tools.
Developed an e-commerce website using Angular, integrating with backend APIs for product listings and user authentication.
Built a CRM system for a client, implementing features such as customer management, order tracking, and reporting.
Created a data visualization tool using Angular and D3.js to display complex da...
Interview Preparation Tips
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