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?
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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?
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ngOnInit method forms part of which of the following interface?
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It is recommended to invoke data access methods which calls a server in ________ method of a component?
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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?
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The service is injected in the component using which of the following?
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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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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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