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Angular Services Related Interview Questions



This page represents a set of questions which would test your knowledge related to Services in Angular (Angular 2, Angular 4, Angular 5). It touched upon some of the following concepts:

  • How to create a service in Angular
  • How to inject a service within a component

Take a Test on Angular Services Concepts

Which of the following metadata when used on a class can be used to specify Angular may need to inject dependencies into this service?

Correct! Wrong!

A data service can return the data synchronously using Promise?

Correct! Wrong!

Which of the following needs to be done for Angular to create fresh instance of service when it creates the component using that service?

Correct! Wrong!

ngOnInit method forms part of which of the following interface?

Correct! Wrong!

It is recommended to invoke data access methods which calls a server in ________ method of a component?

Correct! Wrong!

A data service can return the data asynchronously using Promise?

Correct! Wrong!

The component should invoke which of the following API on the returned promise object from the service?

Correct! Wrong!

The service is injected in the component using which of the following?

Correct! Wrong!

It is recommended to access the server to retrieve data when bootstrapping the component using which of the following method?

Correct! Wrong!

Angular Services Related Interview Questions
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Ajitesh Kumar

I have been recently working in the area of Data analytics including Data Science and Machine Learning / Deep Learning. I am also passionate about different technologies including programming languages such as Java/JEE, Javascript, Python, R, Julia, etc, and technologies such as Blockchain, mobile computing, cloud-native technologies, application security, cloud computing platforms, big data, etc. For latest updates and blogs, follow us on Twitter. I would love to connect with you on Linkedin. Check out my latest book titled as First Principles Thinking: Building winning products using first principles thinking. Check out my other blog, Revive-n-Thrive.com

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6 years ago

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