10+ Fineos Interview Questions and Answers

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

• Implementing code splitting to load only required code

• Optimizing...read more

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 immediately upon creation.

• Observables can be transformed ...read more

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 data

• Use a shared data store like Firebase or GraphQL to st...read more

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.route.params.subscribe(params => console.log(params))

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 every check of projected content

• ngAfterViewInit() - called ...read more

There are four types of bindings in Angular.

• Interpolation binding

• Property binding

• Event binding

• Two-way binding

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 strategy checks for changes only in the component's input prope...read more

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 and injected

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 false or omitted.

• Example: CurrencyPipe is a pure pipe as it do...read more