Felix Health Care Software Developer Interview Questions and Answers

I am familiar with a wide range of technologies used in software development.

• Java

• Python

• C++

• JavaScript

• HTML/CSS

• SQL

• Git

• Linux

• RESTful APIs

• Agile methodologies

OOPs concepts in Java include encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: Bundling data and methods together in a class.

• Inheritance: Creating new classes from existing ones, inheriting their properties and behaviors.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Abstraction: Hiding complex implementation details and providing a simplified interfa

Abstraction can be achieved through interfaces, abstract classes, and encapsulation.

• Using interfaces to define a set of methods that a class must implement

• Using abstract classes to provide a base implementation that can be extended by subclasses

• Encapsulating implementation details to hide complexity and provide a simpler interface

• Using design patterns such as Factory and Strategy to abstract away implementation details

Class is a blueprint for creating objects while interface defines a contract for implementing classes.

• Class is a template for creating objects with properties and methods.

• Interface is a contract that defines a set of methods and properties that a class must implement.

• Object is an instance of a class that has its own set of properties and methods.

• Function instance is a reference to a function that can be called with arg...read more

Access modifiers control the visibility and accessibility of class members.

• Access modifiers include public, private, protected, and internal.

• Public members can be accessed from anywhere.

• Private members can only be accessed within the same class.

• Protected members can be accessed within the same class and its subclasses.

• Internal members can be accessed within the same assembly.

• Access modifiers help enforce encapsulation ...read more

Cloud refers to the delivery of computing services over the internet.

• Cloud computing allows users to access data and applications from anywhere with an internet connection.

• Cloud services can be categorized into three main types: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).

• Cloud providers include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

• ...read more

There are multiple ways to achieve tasks on AWS depending on the specific task.

• Using AWS Management Console

• Using AWS CLI

• Using AWS SDKs

• Using AWS CloudFormation

• Using AWS Elastic Beanstalk

• Using AWS Lambda

• Using AWS Step Functions

• Using AWS Batch

A string is a sequence of characters used to represent text in programming.

• A string is a data type in programming languages.

• It is typically used to store and manipulate text.

• Strings are enclosed in quotation marks, such as "Hello, World!".

• Strings can be concatenated using the + operator, e.g., "Hello" + "World".

• Strings can also be indexed and accessed character by character.

• Examples of strings: "apple", "12345", "Hello

Encapsulation is hiding implementation details while polymorphism is using a single interface for multiple types.

• Encapsulation is achieved through access modifiers like private, protected, and public.

• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• Encapsulation is about data hiding and abstraction while polymorphism is about behavior.

• Example of encapsulation: a class with...read more

Deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Deadlock occurs when two or more processes are stuck in a circular waiting state.

• It happens when processes compete for resources and each process holds a resource that another process needs.

• Four necessary conditions for deadlock are mutual exclusion, hold and wait, no preemption, and ...read more