Baker Hughes
Applied Materials Interview Questions and Answers
Q1. What is difference between interface and abstract class?
Interface defines only method signatures while abstract class can have method implementations.
An interface can be implemented by multiple classes while a class can extend only one abstract class.
An abstract class can have instance variables while an interface cannot.
An abstract class can have constructors while an interface cannot.
An abstract class can provide default implementations for some methods while an interface cannot.
Example: An interface for a shape can have a metho...read more
Q2. How to communicate with components in angular?
Components in Angular can communicate with each other using @Input, @Output, and services.
Use @Input to pass data from parent to child component
Use @Output to emit events from child to parent component
Use services to share data between components that are not directly related
Use RxJS subjects to create a shared data stream between components
Q3. What is oops, explain them?
Object-oriented programming (OOP) is a programming paradigm that uses objects to represent and manipulate data.
OOP is based on the concept of classes and objects.
It allows for encapsulation, inheritance, and polymorphism.
Encapsulation hides the internal details of an object and provides a public interface.
Inheritance allows classes to inherit properties and methods from other classes.
Polymorphism allows objects of different classes to be treated as objects of a common supercl...read more
Q4. What is difference between docker and kubernet?
Docker is a containerization platform while Kubernetes is a container orchestration tool.
Docker is used to create, deploy, and run applications in containers.
Kubernetes is used to manage and orchestrate multiple containers in a cluster.
Docker provides a way to package and distribute applications in a portable manner.
Kubernetes provides features like automatic scaling, load balancing, and self-healing.
Docker is a lower-level technology while Kubernetes is a higher-level techno...read more
Q5. What is view encapsulation in angular?
View encapsulation is a feature in Angular that allows for the creation of isolated components.
View encapsulation ensures that styles defined in a component do not affect other components.
There are three types of view encapsulation: Emulated, Native, and None.
Emulated is the default and uses CSS to emulate shadow DOM.
Native uses the browser's native shadow DOM implementation.
None does not provide any view encapsulation and styles can leak out of the component.
Q6. What is event emitter in angular?
Event emitter is a class in Angular that allows communication between components.
Event emitter is used to emit custom events in Angular.
It allows communication between parent and child components.
It can be used to pass data from child to parent component.
It is a part of the @angular/core package.
Example: @Output() eventEmitter = new EventEmitter();
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