10+ Alice - Sheraton Grand Hotel Interview Questions and Answers

Node.js has several core modules that provide essential functionality for building applications.

• HTTP: Allows Node.js to transfer data over the Hyper Text Transfer Protocol (HTTP)

• FS: Provides file system operations like reading and writing files

• OS: Gives information about the operating system on which Node.js is running

• Path: Helps in working with file and directory paths

• Events: Allows to handle events in Node.js applications

process.nextTick() is called before any I/O events, while setImmediate() is called after I/O events.

• process.nextTick() is called at the end of the current event loop cycle, before any I/O events.

• setImmediate() is called at the beginning of the next event loop cycle, after I/O events.

• Use process.nextTick() for executing code asynchronously but as soon as possible.

• Use setImmediate() for executing code asynchronously after I/O events have been processed.

Async in Node.js can be implemented using callbacks, promises, or async/await.

• Use callbacks to handle asynchronous operations in Node.js

• Promises can be used for cleaner asynchronous code

• Async/await provides a more synchronous way to write asynchronous code

Spread operator is used to spread the elements of an iterable object into a new array or object.

• Spread operator is denoted by three dots (...)

• It can be used with arrays, objects, and function arguments

• It simplifies the code and makes it more readable

• Example: const arr1 = [1, 2, 3]; const arr2 = [...arr1, 4, 5]; // [1, 2, 3, 4, 5]

• Example: const obj1 = {a: 1, b: 2}; const obj2 = {...obj1, c: 3}; // {a: 1, b: 2, c: 3}

Implement targeted marketing campaigns, improve customer experience, and leverage social media to increase customer base.

• Identify target audience and create personalized marketing campaigns

• Improve customer experience through product enhancements and customer support

• Leverage social media platforms to reach a wider audience

• Collaborate with sales team to identify potential leads and convert them into customers

• Offer incentives or promotions to attract new customers

• Analyze custome...read more

To increase revenue 2x from each customer in 2 months, focus on upselling, cross-selling, and improving customer retention.

• Implement upselling strategies by offering higher-priced versions or additional features of the product.

• Cross-sell by recommending complementary products or services to customers.

• Improve customer retention through personalized communication, loyalty programs, and exceptional customer service.

• Analyze customer data to identify potential upsell and cross-sel...read more

Sort an array of objects by id without for loop

• Use Array.sort() method with a compare function

• Compare the id property of each object

• Return -1, 0, or 1 based on comparison

Angular is a front-end framework for building client-side applications, while Node.js is a back-end runtime environment for running server-side applications.

• Angular is used for building dynamic web applications with HTML, CSS, and TypeScript.

• Node.js is used for server-side scripting and building scalable network applications.

• Angular is a front-end framework developed and maintained by Google.

• Node.js is a back-end runtime environment that uses JavaScript on the server side.

• Ang...read more

To acquire competitor's clients, my tactic would be to offer a superior product or service, provide targeted marketing campaigns, and build strong relationships with potential clients.

• Develop a product or service that offers unique features or benefits compared to competitors.

• Conduct market research to identify the target audience and their needs.

• Create targeted marketing campaigns to showcase the advantages of our product or service.

• Offer incentives or discounts to attract p...read more

OOP's concept in Java refers to Object-Oriented Programming, where code is organized around objects and classes.

• OOP focuses on creating reusable code through classes and objects

• Encapsulation, Inheritance, Polymorphism, and Abstraction are key principles of OOP

• Example: Creating a class 'Car' with properties like 'make', 'model', and methods like 'startEngine', 'drive'

Casendra CQL is a query language used for general operations in Casendra database.

• Casendra CQL is similar to SQL but optimized for Cassandra database

• It supports CRUD operations (Create, Read, Update, Delete)

• It allows for filtering, sorting, and aggregating data

• Example: SELECT * FROM table_name WHERE column_name = value;

Column family is a data model used in NoSQL databases to store related data together.

• Used in NoSQL databases like Apache Cassandra

• Consists of rows and columns

• Columns are grouped together and stored on disk sequentially

• Supports wide rows and dynamic columns

• Example: In a social media application, a column family could store user profiles with columns for name, age, and location

I use various social media tools depending on the project requirements.

• For scheduling and analytics, I use Hootsuite and Buffer.

• For visual content creation, I use Canva and Adobe Spark.

• For social listening and monitoring, I use Mention and Brand24.

• For influencer outreach, I use Buzzsumo and Ninja Outreach.

• For Twitter chats, I use TweetDeck.

• For LinkedIn outreach, I use Sales Navigator.

• For Facebook ads, I use Facebook Ads Manager.

• For Instagram analytics, I use Iconosquare.

• For s...read more

Dockerfile to install Tomcat and run a server

• Use a base image like 'openjdk:8-jre' to install Java

• Download and extract Tomcat tarball

• Set environment variables like CATALINA_HOME and PATH

• Expose port 8080 and start Tomcat server using 'catalina.sh run'

QR code stands for Quick Response code.

• QR code is a type of barcode that can be scanned using a smartphone or QR code reader.

• It was first developed in Japan for tracking automotive parts.

• QR codes can store various types of data such as URLs, text, contact information, and more.

• They are widely used for marketing, ticketing, inventory management, and authentication purposes.

• QR codes consist of black squares arranged on a white background, with a square pattern in the corners fo...read more

SRGB is used for digital displays while CMYK is used for printing. SRGB has a smaller color gamut compared to CMYK.

• SRGB is used for digital displays like computer monitors, TVs, and smartphones.

• CMYK is used for printing purposes, such as magazines, brochures, and posters.

• SRGB has a smaller color gamut compared to CMYK, which can result in color discrepancies when converting between the two color spaces.

Color theory is the study of how colors interact with each other and how they can be combined to create visually appealing designs.

• Color wheel: primary, secondary, and tertiary colors

• Color harmony: complementary, analogous, and triadic color schemes

• Color psychology: how different colors can evoke emotions or convey messages