iServeU Interview Questions and Answers

Q1. Explain Color theory
Ans. 
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
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Q2. SRGB vs CMYK difference
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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.
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Q1. Salary Expectation
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Q1. Basic python arrays and dictionary questions
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Q1. Python fundamental questions
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Q1. Write a dockerfile to install tomact and running a server
Ans. 
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'
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Q1. How much was your previous in hand salary?
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Q2. How far do you stay from the office, during nights if needed can you come on your own during any critical situation (Note: I'm a woman)?
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Q3. Are you ok with 40% less in-hand pay from your previous job in Banglore, since you're getting to stay in your hometown and your expenses will be less here?
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Q4. Are you married? Do you have children? What does your husband do? How long are you planning to stay in Bhubaneswar?
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Q5. Are you ok with an employment bond of 24 months with a probation period of 12 months
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Q1. What are different modules of node js?
Ans. 
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 applica
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Q2. Difference between angular and node js
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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 runti...read more
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Q3. Difference between process.nextTick( ) and setImmediate( )
Ans. 
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 afte
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Q4. How to implement async in node js
Ans. 
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
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Q5. General operations of Casendra CQL
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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;
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Q6. Characteristics of column family
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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
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Q1. CEO asked to turn on camera. Asked if i'm married (i'm a woman), the interview was scheduled for 10;30pm in the night. Asked me not to be so formal and treat him like a friend and be casual. I suspect he w...read more
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Array reverse in java

Q1. Required money for me
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Q2. Whyyou want to join
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Q3. Tell me about yourself
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Q4. Your hobby like
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Q5. Your language prefer
Ans. 
I prefer English as my language.
• English is my preferred language for communication.

• I am fluent in English and can effectively communicate in it.
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Q1. How will you increase our company's customer base from X to 2X in a matter of 1 month?
Ans. 
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 incent...read more
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Q2. How will you increase the revenue to 2x from each customer in a course of 2 months?
Ans. 
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.

• Analyz...read more
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Q3. What will you do if the management cuts down the project timelines by half and your job depends on delivering it?
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Q4. What will be your tactic to acquire competitor's clients ?
Ans. 
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 pro...read more
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Imagine you are fired from our company and you're furious and want to build a competitor of our company. Develop a deeply researched strategy to build up a company of a similar scale like ours in a matter of 2 years.

Q1. Tell me about yourself
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Q1. Full form of QR code
Ans. 
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...read more
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