200+ Maven Silicon Interview Questions and Answers

To find palindrome among first N numbers, iterate from 1 to N and check if the number is equal to its reverse.

• Iterate from 1 to N

• For each number, check if it is equal to its reverse

• If yes, it is a palindrome

Print prime numbers from 1 to 100 and insert element in an array at specific index without using loop.

• Use Sieve of Eratosthenes algorithm to find prime numbers

• Use splice() method to insert element in array at specific index

The question asks about using .every() and .includes() methods to check if each character of a string is present in another string.

• Loop through each element of the string

• Split the string into an array to access each character

• Use .every() method to check if each character is present in the user string

• Use .includes() method to check if the character is present

Microservices communicate with each other through APIs and messaging protocols.

• Microservices use APIs to communicate with each other.

• Messaging protocols like HTTP, AMQP, and MQTT are used for asynchronous communication.

• Service discovery mechanisms like Eureka and Consul are used to locate services.

• API gateways like Zuul and Kong are used to manage API traffic.

• Event-driven architecture is used for real-time communication between services.

This interview question covers various topics including abstract class, interface, HashMap, ArrayList, Linked List, String reversal, dependency injection, IOC container, and singleton class.

• Abstract class is a class that cannot be instantiated and can have both abstract and non-abstract methods.

• Interface is a blueprint of a class that can only have abstract methods and cannot be instantiated.

• HashMap is a data structure that stores key-value pairs and uses hashing to provide c...read more

No, this keyword cannot be used inside a static method.

• The 'this' keyword refers to the current instance of the class, but static methods do not have an instance.

• Static methods can only access static variables and methods.

• To access non-static variables or methods, an object of the class must be created first.

Dependency Injection is a design pattern where components are given their dependencies rather than creating them internally.

• In .Net Core, Dependency Injection is built into the framework and can be configured in the ConfigureServices method of the Startup class.

• Services are registered in the ConfigureServices method using the IServiceCollection interface.

• Dependencies are injected into classes using constructor injection or property injection.

• Example: services.AddScoped();

• Exam...read more

Securing APIs involves implementing authentication, authorization, encryption, and input validation.

• Implement authentication mechanisms like OAuth, JWT, or API keys

• Use authorization to control access to APIs based on user roles and permissions

• Encrypt sensitive data transmitted over the network using HTTPS

• Validate and sanitize input to prevent common security vulnerabilities like SQL injection or cross-site scripting (XSS)

Using component instead of service may cause confusion and errors in the code.

• Components and services are two different concepts in Java development.

• Components are used for UI elements while services are used for business logic.

• Using component instead of service may lead to errors in the code and confusion for other developers.

• For example, if a component is used instead of a service for business logic, it may not have the necessary methods or functionality.

• It is important to ...read more

String is immutable, while StringBuilder is mutable. StringBuilder is faster and more memory efficient for string manipulation.

• String is immutable, meaning once created, it cannot be changed. StringBuilder is mutable, allowing for efficient string manipulation.

• StringBuilder is faster than String for concatenating multiple strings, as it does not create a new string object each time.

• String uses more memory as it creates a new object every time it is modified, while StringBuild...read more

I use Git as my version control system.

• Git is a distributed version control system.

• It allows for easy branching and merging of code.

• It has a vast community and many resources available for learning and troubleshooting.

• Other popular version control systems include SVN and Mercurial.

Abstract class is used when there is a need for default implementation, while interfaces are used for multiple inheritance.

• Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

• Abstract classes can provide default implementations for methods, while interfaces cannot.

• Interfaces allow a class to implement multiple interfaces, but can only inherit from one abstract class.

• Use abstract classes when there is a need for a c...read more

Pipelines and Middlewares in .NET are used for request processing and can be configured using middleware components.

• Pipelines in .NET are used to define a series of middleware components that process an HTTP request.

• Middlewares are components that can handle requests and responses in the pipeline.

• To configure pipelines and middlewares in .NET, you can use the 'UseMiddleware' method in the 'Configure' method of the Startup class.

• You can also use extension methods like 'UseRout...read more

There are no specific types of JSON files in .NET Core project.

• JSON files are simply text files with a .json extension

• .NET Core supports reading and writing JSON data using the Newtonsoft.Json package

• JSON files can be used for configuration settings, data storage, and communication between systems

Answers to common questions asked in an Angular Developer interview.

• var, const, and let are used to declare variables in JavaScript

• var has function scope, while let and const have block scope

• const is used to declare variables that cannot be reassigned

• let is used to declare variables that can be reassigned

• ES6 introduced new features like arrow functions, template literals, and destructuring

• Closure is a function that has access to variables in its outer scope, even after the ou...read more

Services, observables, promises, closure are key concepts in software development.

• Services: Reusable components that provide functionality to different parts of an application.

• Observables: Represent data streams and can be subscribed to for changes.

• Promises: Objects that represent the eventual completion or failure of an asynchronous operation.

• Closure: Functions that have access to variables from their containing scope even after the parent function has finished executing.

MVC is a software design pattern that separates an application into three interconnected components: Model, View, and Controller.

• Model represents the data and business logic of the application.

• View is responsible for rendering the user interface.

• Controller handles user input and updates the model and view accordingly.

• Library is a collection of pre-written code that can be reused in different projects.

• Helper function is a function that performs a specific task and can be calle...read more

Docker is a containerization platform that allows developers to package, deploy, and run applications in isolated environments.

• Docker allows for easy and efficient deployment of applications across different environments

• It uses containerization to create isolated environments for applications to run in

• Docker images can be easily shared and reused

• Docker can be used to simplify the development process by allowing developers to work in consistent environments

• Examples of companie...read more

JWT authentication and OAuth example for API

• Implement JWT authentication by generating a token upon user login and including it in the Authorization header of API requests

• Use OAuth for user authorization by obtaining access tokens from a third-party provider like Google or Facebook

• Ensure API endpoints validate JWT tokens and OAuth access tokens before allowing access to resources

Promises are objects representing the eventual completion or failure of an asynchronous operation.

• Promises are used to handle asynchronous operations such as fetching data from an API.

• They have three states: pending, fulfilled, or rejected.

• Pending is the initial state, fulfilled means the operation completed successfully, and rejected means the operation failed.

• Promises can be chained using .then() and .catch() methods to handle the different states.

• Example: const promise = n...read more

Middleware is software that acts as a bridge between different applications or components, while Filters are used to intercept and modify requests and responses in a web application.

• Middleware is a software layer that enables communication between different systems or components.

• Filters are used in web applications to intercept and modify requests and responses.

• Middleware can be used to handle cross-cutting concerns such as logging, authentication, and error handling.

• Examples...read more

Entity class represents a table in a database and its attributes as fields.

• Define class with @Entity annotation

• Add @Id annotation to primary key field

• Add @Column annotation to map fields to table columns

• Implement getters and setters

• Override equals() and hashCode() methods

Middlewares are components that handle HTTP requests and responses in the request pipeline, while filters are used to run logic before or after an action method is executed.

• Middlewares are components that are added to the request pipeline and can handle requests and responses.

• Filters are used to run logic before or after an action method is executed in ASP.NET Core MVC.

• Middlewares are executed in the order they are added to the pipeline, while filters can be applied globally ...read more

React DOM is a package that provides an efficient way to interact with the Document Object Model (DOM).

• React DOM is used to render React components into the DOM.

• It provides a way to update the DOM efficiently by only updating the necessary components.

• React DOM is used in conjunction with React, but can also be used independently.

• Examples of React DOM methods include ReactDOM.render() and ReactDOM.findDOMNode().

NET core is a cross-platform, open-source framework for building modern, cloud-based, internet-connected applications. NET framework is a Windows-only framework for building Windows desktop applications. NET is a general term encompassing both .NET core and .NET framework.

• NET core is cross-platform and open-source, while .NET framework is Windows-only.

• .NET core is modular and lightweight, allowing for faster performance and easier updates.

• .NET core is designed for building mo...read more

Unique, Primary Key, Clustered, and Non-Clustered Indices are all used in database management to enforce data integrity and improve query performance.

• Unique constraint ensures that all values in a column are unique, but allows NULL values.

• Primary Key constraint ensures that all values in a column are unique and not NULL. Each table can have only one Primary Key.

• Clustered Index physically reorders the way records in the table are stored. Each table can have only one Clustered ...read more

rem and em are both units in CSS for defining font sizes, with rem being relative to the root element and em being relative to the parent element.

• rem stands for 'root em' and is relative to the font size of the root element (usually the tag)

• em stands for 'element em' and is relative to the font size of the parent element

• To hide something in CSS, you can use the display property with a value of 'none' or the visibility property with a value of 'hidden'

• Example: To hide an eleme...read more

Class components are ES6 classes that extend the React.Component class, while functional components are just plain JavaScript functions.

• Class components are more feature-rich and have access to lifecycle methods.

• Functional components are simpler and easier to read and test.

• Class components can have state and use lifecycle methods like componentDidMount and componentDidUpdate.

• Functional components are stateless and do not have lifecycle methods.

• Functional components can be use...read more

The @Autowired annotation is used to automatically wire beans by matching the data type of the bean with the data type of the property.

• Used to inject dependencies automatically

• Reduces the need for manual bean configuration

• Can be used with constructors, fields, and methods

• Can be used with @Qualifier to specify which bean to wire

Ternary operators are conditional operators that evaluate a boolean expression and return one of two values based on the result.

• Ternary operators are written in the form of 'condition ? value1 : value2'

• If the condition is true, the operator returns value1, otherwise it returns value2

• Ternary operators can be used as a shorthand for if-else statements

• Example: int x = (a > b) ? a : b; // assigns the larger value of a and b to x

Eureka server is a service registry that enables microservices to discover and communicate with each other.

• Eureka server is a component of Netflix's OSS suite.

• It allows services to register themselves and discover other services.

• It uses a REST API for communication.

• Default port is 8761.

Types of CSS include inline, internal, external, and imported. Inline has the highest priority.

• Types of CSS: inline, internal, external, imported

• Inline CSS has the highest priority

• Internal CSS is defined within the HTML document

• External CSS is linked to the HTML document using a tag

• Imported CSS is used to import an external style sheet within another style sheet

ionViewWillLeave and ionViewDidLeave

• ionViewWillLeave is triggered when the page is about to leave the view

• ionViewDidLeave is triggered after the page has left the view

• Both events are part of the ionView lifecycle

Authentication verifies the identity of a user, while authorization determines the user's access rights.

• Authentication confirms the user's identity through credentials like username and password.

• Authorization determines what actions the authenticated user is allowed to perform.

• Authentication precedes authorization in the security process.

• Example: Logging into a website (authentication) and then accessing specific pages based on user roles (authorization).

Local storage persists even after the browser is closed, while session storage is cleared when the browser is closed.

• Local storage has no expiration date, while session storage expires when the browser is closed.

• Local storage stores data with no limit, while session storage has a limit of around 5MB.

• Local storage data is available across all windows/tabs for that domain, while session storage data is only available within the same tab.

• Example: Local storage can be used for st...read more

Circuit breaker is a design pattern used to prevent cascading failures in distributed systems. Hystrix is a popular implementation.

• Circuit breaker monitors the availability of a service and trips if the service fails repeatedly.

• It helps to prevent cascading failures by failing fast and providing fallback options.

• Hystrix is a popular implementation of circuit breaker pattern in Java.

• It provides features like request caching, request collapsing, and thread isolation.

Managed code is code that is executed by the Common Language Runtime (CLR) while unmanaged code is executed directly by the operating system.

• Managed code is written in languages like C#, VB.NET, and runs in a managed environment like .NET framework.

• Unmanaged code is written in languages like C, C++, and directly interacts with the operating system.

• OOPs pillars are the four main principles of Object-Oriented Programming: Inheritance, Encapsulation, Abstraction, and Polymorphis...read more

The output of the program when 0 is divided by 7 is 0.

• Division of 0 by any number results in 0.

• In programming languages, dividing by 0 usually results in an error or undefined behavior.

Using dependency injection in Android development can improve code maintainability and testability.

• Pros: easier to manage dependencies, promotes code reusability, facilitates unit testing

• Cons: initial setup can be complex, may introduce overhead in smaller projects

• Example: Using Dagger 2 for dependency injection in an Android project

Answering questions related to Redux, props, hooks in React Native and its tools

• Redux is a state management library for JavaScript applications

• Props are short for properties and are used to pass data between components

• Hooks are functions that allow you to use state and other React features without writing a class

• React Native tools include Expo, React Native Debugger, and Xcode

• Expo is a set of tools and services for building and deploying React Native apps

• React Native Debugger...read more

Data binding techniques are used to establish a connection between the UI components and the data in an application.

• One-way data binding: Updates the UI when the data changes.

• Two-way data binding: Updates the data when the UI changes.

• One-time data binding: Updates the UI once with the initial data and does not track changes.

• Event binding: Binds UI events to data changes.

• Property binding: Binds data to an element's property.

Different authentication modes in Dot Net Core include JWT, OAuth, and Identity.

• JWT (JSON Web Tokens) for stateless authentication

• OAuth for delegated authorization

• Identity for user authentication and authorization management

CRUD is a basic operation for data manipulation while JPA is a Java specification for ORM.

• CRUD stands for Create, Read, Update, and Delete which are basic operations for data manipulation.

• JPA is a Java specification for Object-Relational Mapping (ORM) which provides a way to map Java objects to relational database tables.

• JPA provides a higher level of abstraction and simplifies the data access layer by providing an API for CRUD operations.

• JPA also provides features like cachi...read more

SOLID is a set of principles for object-oriented programming to make software more maintainable, scalable, and robust.

• SOLID stands for Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion principles.

• Single Responsibility Principle (SRP) states that a class should have only one reason to change.

• Open-Closed Principle (OCP) states that a class should be open for extension but closed for modification.

• Liskov Substitution Principl...read more

Switched to Angular for its robustness and scalability.

• Angular offers better performance and scalability compared to other frameworks.

• Angular's modular architecture allows for easy maintenance and updates.

• Angular's extensive documentation and community support make it a reliable choice.

• Switching to Angular also allowed for better integration with other technologies.

• Overall, the decision to switch to Angular was based on its ability to meet our project's needs and future growt...read more

Server Side Rendering (SSR) is the process of rendering web pages on the server side before sending them to the client. Static Site Generation (SSG) is the process of generating static HTML files at build time.

• SSR improves performance by reducing the time to first paint and providing better SEO.

• SSR can be implemented using frameworks like Next.js in React.

• SSG pre-renders pages at build time, resulting in faster loading times and improved SEO.

• SSG is commonly used in static sit...read more

staticSideProps and serverSideProps are used in Next.js for data fetching and pre-rendering.

• staticSideProps is used for pre-rendering static data at build time.

• serverSideProps is used for pre-rendering dynamic data at request time.

• staticSideProps is used for data that does not change frequently.

• serverSideProps is used for data that changes frequently or needs to be fetched at request time.

ViewData and ViewBag are both used to pass data from controller to view in ASP.NET MVC, but ViewData uses dictionary while ViewBag uses dynamic properties.

• ViewData is a dictionary object that stores data using key-value pairs.

• ViewBag is a dynamic property that allows you to store and retrieve data.

• ViewData requires typecasting while ViewBag does not.

• ViewData is a bit slower than ViewBag due to typecasting.

• Example: ViewData['Name'] = 'John'; ViewBag.Age = 25;

Passing data between components can be achieved through various methods.

• Using input and output decorators to pass data between parent and child components

• Using services to share data between unrelated components

• Using event emitters to pass data from child to parent components

• Using routing parameters to pass data between components

• Using state management libraries like Redux or NgRx

The extension for Android build file is .apk.

• The Android build file is typically named 'build.gradle'.

• The build.gradle file is used to configure the build settings for an Android project.

• The build process generates an APK (Android Package) file, which is the final output of the build process.

• The APK file contains the compiled code, resources, and other files required to run the app on an Android device.

Dependency injection is a design pattern where components are given their dependencies rather than creating them.

• Dependency injection helps in making components loosely coupled, making it easier to test and maintain code.

• There are three main lifetimes for dependencies: transient, scoped, and singleton.

• Transient dependencies are created each time they are requested.

• Scoped dependencies are created once per request.

• Singleton dependencies are created only once and reused througho...read more

NET Core is a cross-platform, open-source framework while .NET is a Windows-only framework.

• NET Core is modular and lightweight while .NET is monolithic and heavy.

• NET Core supports microservices architecture while .NET does not.

• NET Core has better performance and scalability than .NET.

• NET Core can run on Windows, Linux, and macOS while .NET can only run on Windows.

• NET Core has a smaller footprint and faster startup time than .NET.

Semantic tags in HTML are specific tags that provide meaning to the content they enclose.

• Semantic tags help search engines and screen readers understand the structure of a webpage.

• Examples of semantic tags include <header>, <footer>, <nav>, <article>, <section>, <aside>, <main>, <figure>, <figcaption>.

• Using semantic tags improves SEO and accessibility of a website.

Map is used to transform each element of an array, while Filter is used to select elements based on a condition.

• Map returns a new array with the same length as the original array, but with each element transformed based on a provided function.

• Filter returns a new array with only the elements that pass a provided condition function.

• Example for Map: [1, 2, 3].map(num => num * 2) will result in [2, 4, 6].

• Example for Filter: [1, 2, 3, 4, 5].filter(num => num % 2 === 0) will resul...read more

Map creates a new array with the results of calling a provided function on every element, while forEach executes a provided function once for each array element.

• Map returns a new array with the same length as the original array, while forEach does not return anything.

• Map does not mutate the original array, while forEach can mutate the original array.

• Map is more suitable for transforming data and creating a new array, while forEach is used for executing a function on each elem...read more

Coroutines, scope functions, and visibility modifiers are key concepts in Kotlin programming for Android development.

• Coroutines are a way to perform asynchronous programming in a sequential manner. They allow for non-blocking operations.

• Scope functions are functions that allow you to execute a block of code within the context of an object. Examples include 'let', 'apply', 'run', 'also', and 'with'.

• Visibility modifiers control the visibility of classes, interfaces, functions, ...read more

MVVM is an architectural pattern that separates the user interface from the business logic and data handling in Android development.

• Model represents the data and business logic of the application.

• View is responsible for displaying the UI elements and sending user interactions to the ViewModel.

• ViewModel acts as a mediator between the Model and the View, handling the communication and data flow.

• MVVM helps in achieving separation of concerns, making code more modular and easier ...read more

To reduce candidate no-shows and increase joiner's ratio, focus on clear communication, setting expectations, streamlining the hiring process, and providing a positive candidate experience.

• Communicate clearly with candidates about the job role, company culture, and expectations.

• Set realistic expectations during the recruitment process to avoid surprises later on.

• Streamline the hiring process to minimize delays and keep candidates engaged.

• Provide a positive candidate experienc...read more

I prioritize and communicate effectively with vendors to ensure all requirements are met.

• Establish clear communication channels with each vendor

• Create a detailed requirements document outlining expectations

• Regularly follow up with vendors to track progress and address any issues

• Prioritize requirements based on business needs and deadlines

Pseudo classes and elements are used in CSS to style elements based on their state or position in the document.

• Pseudo classes are used to style elements based on their state, such as :hover, :active, and :focus.

• Pseudo elements are used to style specific parts of an element, such as ::before and ::after.

• Pseudo classes and elements are denoted by a colon or double colon before the name.

• They can be used to add special effects, such as changing the color of a link when it is hove...read more

useMemo is used for memoizing a value, while useCallback is used for memoizing a function.

• useMemo is used to memoize a value and recompute it only when its dependencies change.

• useCallback is used to memoize a function and recompute it only when its dependencies change.

• Example: useMemo can be used to memoize the result of a complex computation, while useCallback can be used to memoize a callback function passed to a child component.

App.Use() is used for adding middleware to the request pipeline, while App.Run() is used for handling the request directly.

• App.Use() is used to add middleware components to the request pipeline.

• App.Run() is used to handle the request directly without passing it to the next middleware component.

• App.Use() is typically used for setting up middleware like authentication, logging, etc.

• App.Run() is used for handling the final request and generating a response.

• Example: app.UseMiddle...read more

I wrote code to implement a sorting algorithm in Python

• Implemented bubble sort algorithm

• Used a for loop to iterate through the list and compare adjacent elements

• Swapped elements if they were in the wrong order

ORM (Object-Relational Mapping) tool is a software framework that maps objects to relational databases.

• ORM tool simplifies database operations by allowing developers to interact with databases using object-oriented programming.

• It eliminates the need for writing complex SQL queries by providing a higher-level abstraction.

• ORM tools handle tasks like data persistence, retrieval, and mapping between objects and database tables.

• Popular Java ORM tools include Hibernate, JPA (Java P...read more

ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list.

• ArrayList provides fast random access and slower insertion/deletion, while LinkedList provides fast insertion/deletion and slower random access.

• ArrayList uses less memory overhead compared to LinkedList.

• Example: ArrayList is more suitable for scenarios where frequent access and traversal of elements is required, while LinkedList is more suitable for scenarios where frequent ...read more

Answers to questions related to Angular frontend development

• To create a custom pipe, use the @Pipe decorator and implement the PipeTransform interface

• Directives in Angular are used to manipulate the DOM and add behavior to elements

• Binding in Angular is used to connect the component class with the template

• Examples of binding include property binding, event binding, and two-way binding

Fallback in getStaticPaths in NextJs allows dynamic routes to be pre-rendered on-demand.

• Fallback value can be true, false, or 'blocking'.

• When fallback is true, Next.js will serve a static page for paths not generated at build time.

• When fallback is 'blocking', Next.js will server a static page for paths not generated at build time, but will also server-render the page on the first request.

• Fallback is useful for dynamic routes with a large number of possible values.

nextHat package in NextJs is used for server-side rendering and managing server-side logic.

• nextHat package helps in handling server-side logic in NextJs applications

• It allows for server-side rendering of pages in NextJs

• nextHat package can be used for managing API calls and server-side data fetching

Controller is a general term for handling requests, while Rest Controller is specifically for RESTful web services.

• Controller is responsible for handling incoming requests and returning responses.

• Rest Controller is a specialized type of controller that is used for building RESTful web services.

• Rest Controller uses HTTP methods like GET, POST, PUT, DELETE to perform CRUD operations on resources.

• Rest Controller returns data in JSON or XML format.

• Example: Spring MVC has a regula...read more

Sorting an array and using HOC components and Flux in React Native

• To sort an array, use the sort() method

• To use HOC components, create a higher-order function that returns a component

• To use Flux in React Native, install the flux package and create actions, stores, and a dispatcher

String is immutable to ensure thread safety, security, and caching benefits.

• Immutable strings are thread-safe as multiple threads can access the same string object without any synchronization issues.

• Immutable strings are secure as they cannot be modified by any malicious code or user input.

• Immutable strings can be cached and reused, improving performance and reducing memory usage.

• Examples of immutable string methods in Java include substring(), toUpperCase(), and toLowerCase(...read more

Worker process in IIS is a separate process that handles requests for web applications.

• Worker process runs independently from the main IIS process

• It manages requests for web applications hosted on the server

• Each worker process is assigned to a specific application pool

• Worker processes can be recycled or restarted to maintain performance

• Example: w3wp.exe is the default worker process for IIS

get props is used to retrieve the value of a property in React components, while set props is used to update the value of a property.

• get props is used to access the value of a property passed down from a parent component

• set props is used to update the value of a property in the current component

• Example: get props - accessing the 'name' prop in a child component: this.props.name

• Example: set props - updating the 'count' prop in a child component: this.props.setProps({ count: 10...read more

get forEach is used to iterate over elements in an array without returning a new array, while map creates a new array by applying a function to each element.

• forEach does not return a new array, while map returns a new array with the results of applying a function to each element

• forEach is used for side effects, while map is used for transforming data

• forEach does not return anything, while map returns a new array

• Example: const numbers = [1, 2, 3]; numbers.forEach(num => consol...read more

Interfaces and abstract classes are used in Android to achieve abstraction, modularity, and code reusability.

• Interfaces are used to define a contract that classes must implement, allowing for polymorphism and loose coupling.

• Abstract classes provide a base implementation for subclasses, allowing for code reuse and providing common functionality.

• Interfaces are commonly used for event handling, callbacks, and defining contracts for communication between components.

• Abstract class...read more

Embeddings are a way to represent words or phrases as vectors in a high-dimensional space, capturing semantic relationships.

• Embeddings are important for tasks like natural language processing, where words need to be represented in a meaningful way.

• They can be created using techniques like Word2Vec, GloVe, or using neural networks like Word Embeddings.

• Embeddings help in capturing semantic relationships between words, allowing models to understand context and meaning.

• For exampl...read more

Different types of interfaces include user interfaces, hardware interfaces, and software interfaces.

• User interfaces: allow users to interact with the system, such as graphical user interfaces (GUI) and command-line interfaces (CLI)

• Hardware interfaces: connect hardware components to the system, such as USB, HDMI, and Ethernet ports

• Software interfaces: define how software components interact with each other, such as application programming interfaces (APIs) and network protocol...read more

Hooks are a feature in React that allow you to use state and other React features in functional components. Redux is a state management library for JavaScript applications.

• Hooks are functions that let you use React state and lifecycle features in functional components.

• Hooks provide a way to reuse stateful logic between components.

• Redux is a predictable state container for JavaScript apps.

• Redux helps manage the state of an application in a centralized manner.

• Redux uses a singl...read more

Sanity and smoke testing are types of software testing.

• Smoke testing is a type of testing that checks if the basic functionalities of the software are working properly.

• Sanity testing is a type of testing that checks if the major functionalities of the software are working properly.

• Smoke testing is done to ensure that the software is stable enough for further testing.

• Sanity testing is done to ensure that the software is ready for detailed testing.

• Smoke testing is usually done ...read more

NeoSoft is a software development company specializing in custom software solutions.

• NeoSoft offers a wide range of software development services.

• They have expertise in various technologies such as Java, .NET, and mobile app development.

• NeoSoft has a strong focus on delivering high-quality and scalable solutions.

• They have a track record of successfully completing projects for clients in different industries.

• NeoSoft emphasizes on understanding client requirements and providing ...read more

Exception handling is a mechanism to handle and recover from errors or exceptional situations that occur during program execution.

• Exception handling allows programmers to gracefully handle errors and prevent program crashes.

• It involves the use of try-catch blocks to catch and handle exceptions.

• Exceptions can be thrown manually using the throw keyword.

• Common exception types include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.

• Exception handling helps i...read more

Stream API is a new feature in Java 8 that allows processing of collections in a functional way.

• Stream API provides a set of functional interfaces and methods to perform operations on collections.

• It supports parallel processing of collections, making it faster for large datasets.

• Examples of operations include filtering, mapping, sorting, and reducing.

• Stream API can be used with both primitive and object types.

• It promotes cleaner and more concise code compared to traditional l...read more

The extension for iOS build file is .ipa

• IPA stands for iOS App Store Package

• It is a compressed archive file that contains the app binary and other resources

• It can be installed on iOS devices using iTunes or over-the-air distribution

Encoder-decoder is a neural network architecture used for tasks like machine translation.

• Encoder processes input data and generates a fixed-length representation

• Decoder uses the representation to generate output sequence

• Example: Seq2Seq model for translating English to French

Bridge is a structural design pattern that decouples an abstraction from its implementation. The new architecture refers to modern design patterns and technologies used in software development.

• Bridge pattern allows the client code to work with different implementations of an interface independently.

• The new architecture in front end development may include concepts like component-based architecture, state management libraries like Redux, and modern frameworks like React or Ang...read more

map creates a new array with the results of calling a provided function on every element, while forEach executes a provided function once for each array element.

• map returns a new array with the same length as the original array, while forEach does not return anything.

• map does not mutate the original array, while forEach can mutate the original array.

• map is more suitable for transforming data and creating a new array, while forEach is used for iterating over elements and perfo...read more

Using PL/SQL to create a procedure with a ref cursor to find the average and factorial of a given number.

• Create a procedure that takes in a number as input and returns the average of that number using a ref cursor.

• Use the EXISTS function to check if a factorial exists for a given number.

• Write a block of code to calculate the factorial of a number using a loop.

CTE stands for Common Table Expression, a temporary named result set that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.

• CTE is defined using the WITH keyword.

• It can be used to simplify complex queries.

• It can also improve query performance.

• CTE can be recursive, allowing a query to reference itself.

• Example: WITH sales AS (SELECT * FROM sales_data) SELECT * FROM sales WHERE amount > 1000;

MVC flow in Dot Net involves Model, View, and Controller components working together to handle user requests and responses.

• Model represents the data and business logic of the application

• View is responsible for displaying the user interface

• Controller handles user input, processes requests, and interacts with the model

• The flow starts with the user interacting with the View, which sends a request to the Controller

• The Controller processes the request, interacts with the Model to ...read more

SQL injection is a type of attack where malicious SQL statements are inserted into an entry field for execution.

• Use parameterized queries or prepared statements

• Sanitize user input by validating and escaping special characters

• Limit database user privileges

• Use a web application firewall

• Regularly update and patch software

Props and cons are not specific terms in JavaScript. Did you mean pros and cons?

• Pros: flexibility, easy to learn, wide range of applications

• Cons: can be slow, can be difficult to debug, can have security vulnerabilities

Both $.post and $.ajax are methods in jQuery used for making AJAX requests, but $.ajax is more versatile and customizable.

• Both $.post and $.ajax are used for making AJAX requests in jQuery.

• $.post is a shorthand method for $.ajax with predefined settings for POST requests.

• $.ajax is more versatile and customizable, allowing for different types of requests and more options.

• Example: $.post('example.php', {data: 'example'}, function(response) { console.log(response); });

• Example: $...read more

CORS stands for Cross-Origin Resource Sharing, a security feature that allows servers to specify who can access their resources.

• CORS is used to prevent web pages from making requests to a different domain than the one that served the original page.

• It is implemented using HTTP headers like Access-Control-Allow-Origin.

• CORS is commonly used in web development to enable secure cross-origin requests in browsers.

• Example: If a frontend application on domain A wants to make a request...read more