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Baker Hughes Senior Software Engineer Interview Questions and Answers

Updated 5 Feb 2024

Q1. What is difference between interface and abstract class?

Ans.

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

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Q2. How to communicate with components in angular?

Ans.

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

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Q3. What is oops, explain them?

Ans.

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

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Q4. What is difference between docker and kubernet?

Ans.

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

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Q5. What is view encapsulation in angular?

Ans.

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.

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Q6. What is event emitter in angular?

Ans.

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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