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Infogain Interview Questions and Answers
Q1. What is the difference between promises and observables ?
Promises are used for asynchronous operations that return a single value, while observables are used for asynchronous operations that return multiple values over time.
Promises return a single value and are not cancellable.
Observables return multiple values over time and can be cancelled.
Promises are eager and start executing immediately upon creation.
Observables are lazy and do not execute until subscribed to.
Promises can only be resolved or rejected once.
Observables can emit...read more
Q2. What is Dependency Injection?
Dependency Injection is a design pattern used to inject dependencies into a class or component.
DI is used to reduce coupling between components
It allows for easier testing and maintenance
Angular has its own DI system built-in
Services and providers are commonly used with DI
Q3. How to find top performing products in amazon , what parameters of the product should we look to invest on it?
To find top performing products on Amazon, look at parameters such as sales rank, customer reviews, ratings, and price.
Check the sales rank of the product - lower rank indicates higher sales performance
Look at customer reviews and ratings - higher ratings and positive reviews indicate customer satisfaction
Consider the price of the product - competitive pricing can attract more customers
Monitor trends and seasonality - products that are in demand during specific times can perf...read more
Q4. What is ng-content
ng-content is a directive in Angular that allows for dynamic insertion of content.
It is used to project content into a component from the outside.
It is often used in combination with ng-template and ng-container.
It can be used to create reusable components that can be customized with different content.
It is useful for creating layouts and templates that can be reused across multiple components.
Q5. What is Services
Services are a way to share data and functionality across components in Angular.
Services are singleton objects that can be injected into components.
They provide a way to share data and functionality across components.
They can be used to make HTTP requests, handle authentication, and more.
Services can be generated using the Angular CLI.
They are typically defined in a separate file and imported into components.
Q6. What is the difference between amazon FBM and FBA
FBM involves sellers fulfilling orders themselves, while FBA involves Amazon storing, packing, and shipping products for sellers.
FBM stands for Fulfillment by Merchant, where sellers handle all aspects of order fulfillment themselves.
FBA stands for Fulfillment by Amazon, where sellers send their products to Amazon's fulfillment centers and Amazon takes care of storage, packing, and shipping.
FBM gives sellers more control over the fulfillment process but requires more time and...read more
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