20+ Bitpastel Interview Questions and Answers

To scale up application, use load balancers and monitor logs to identify failures.

• Use load balancers to distribute traffic across multiple instances

• Monitor logs to identify where the failure occurred

• Implement fault tolerance and redundancy to prevent future failures

• Use auto-scaling to automatically add or remove instances based on traffic

• Real-world example: Amazon Web Services (AWS) uses load balancers and auto-scaling to handle millions of requests

• Code example: Use try-catch...read more

I am proficient in Java, Python, and C++. I have 2 years of experience in software development. I have excellent communication skills for client interaction.

• Proficient in Java, Python, and C++

• 2 years of software development experience

• Excellent communication skills for client interaction

Dependency injection is a design pattern used in Angular to inject dependencies into a component or service.

• Dependency injection allows for loose coupling between components and services

• It makes testing easier by allowing for easy mocking of dependencies

• The constructor in a component class is used to inject dependencies

• Dependencies are specified in the constructor using TypeScript's parameter decorator syntax

I have used various HTML attributes such as class, id, href, src, alt, title, style, and many more.

• class

• id

• href

• src

• alt

• title

• style

Print FizzBuzz based on divisibility condition

• Loop through numbers 1 to n

• If number is divisible by 3, print 'Fizz'

• If number is divisible by 5, print 'Buzz'

• If number is divisible by both 3 and 5, print 'FizzBuzz'

• Else, print the number

CSS has various position attributes to position elements on a web page.

• position: static

• position: relative

• position: absolute

• position: fixed

• position: sticky

Angular is a front-end framework that uses components to build dynamic web applications.

• Angular applications are built using TypeScript, a superset of JavaScript.

• Components are the building blocks of an Angular application.

• Angular uses a hierarchical dependency injection system to manage dependencies.

• Angular applications are loaded and run in the browser.

• Angular applications can communicate with servers using HTTP requests.

CSS specificity determines which style rules are applied to an element.

• Specificity is calculated based on the number of selectors and their types.

• Inline styles have the highest specificity.

• IDs have higher specificity than classes and attributes.

• The universal selector (*) has zero specificity.

• The !important keyword overrides specificity.

• Selectors with equal specificity are applied in the order they appear in the stylesheet.

Various design patterns were used in projects including Singleton, Factory, and Observer.

• Singleton pattern was used to ensure a class has only one instance and provide a global point of access to it.

• Factory pattern was used to create objects without specifying the exact class of object that will be created.

• Observer pattern was used to define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automaticall...read more

package.json is a configuration file used in Node.js projects to manage dependencies and scripts.

• Contains metadata about the project such as name, version, and author

• Lists dependencies and devDependencies required for the project

• Allows for the creation of custom scripts to run tasks

• Can be used to specify the main file of the project

• Can be generated using 'npm init' command

Structural directives are used to manipulate the structure of the DOM.

• ngIf - conditionally adds or removes an element from the DOM

• ngFor - repeats an element for each item in a list

• ngSwitch - conditionally adds or removes elements based on a value

• ngStyle - dynamically adds styles to an element

• ngClass - dynamically adds classes to an element

Decorators are functions that modify the behavior of other functions.

• Decorators are defined using the @ symbol in Python

• They can be used to add functionality to a function without modifying its source code

• Examples include @staticmethod, @classmethod, and @property

• Decorators can also be used to add logging, caching, or authentication to a function

Interface is a contract for classes to implement, while abstract class can have some implementation.

• Interface cannot have any implementation, only method signatures.

• Abstract class can have both abstract and concrete methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used for achieving multiple inheritance in Java.

• Example: interface Animal { void eat(); } abstract class Mammal { abstract void breathe(); }

angular.json is a configuration file used by Angular CLI to manage project settings.

• Contains project configuration settings such as build options, asset paths, and environment variables.

• Can be modified manually or through the Angular CLI.

• Located in the root directory of an Angular project.

• Example: "assets": ["src/favicon.ico", "src/assets"] specifies the asset paths for the project.

Replacing a server involves migrating data, setting up new hardware, and testing for functionality.

• Backup all data and configurations from the old server

• Set up the new server hardware and install necessary software

• Migrate data and configurations to the new server

• Test the new server for functionality and performance

• Update DNS records and network configurations to point to the new server