70+ Evitamin Business Consulting Interview Questions and Answers

Extract and manipulate numerical value from a string.

• Use regular expressions to extract the numerical value from the string.

• Convert the extracted value to an integer, add 100 to it, and then format it back into the original string format.

• Print the updated string with the new numerical value.

let is block scoped, const is immutable, var is function scoped

• let: block scoped, can be reassigned

• const: block scoped, cannot be reassigned, but properties of objects can be changed

• var: function scoped, can be reassigned

The static aspect of a non-static method refers to the fact that it belongs to the class and can be accessed without creating an instance of the class.

• Non-static methods are associated with an instance of a class and can access instance variables.

• Static methods, on the other hand, belong to the class itself and can be accessed without creating an instance.

• Non-static methods can access static variables and methods, but static methods cannot access non-static variables and meth...read more

MQTT publish and subscribe work by clients connecting to a broker, where publishers send messages to topics and subscribers receive messages from those topics.

• Clients connect to a broker to publish or subscribe to topics

• Publishers send messages to specific topics on the broker

• Subscribers receive messages from topics they are subscribed to

• Broker manages the routing of messages between publishers and subscribers

Filter files ending with amazon.txt in Unix shell

• Use the 'ls' command to list all files in the directory

• Use the 'grep' command to filter files ending with 'amazon.txt'

• Combine the two commands using a pipe '|' symbol

Find common sub-strings in two strings and print them in alphabetical order.

• Use a nested loop to compare each character of both strings.

• Store common sub-strings in an array.

• Sort the array in alphabetical order.

• Print the sorted array.

Map applies a function to each element of an array and returns a new array, while forEach iterates over each element without returning a new array.

• Map returns a new array with the results of applying a function to each element of the original array.

• forEach simply iterates over each element of the array without returning a new array.

• Example: Using map to double each element in an array - [1, 2, 3].map(num => num * 2) would return [2, 4, 6].

• Example: Using forEach to log each el...read more

Program to print duplicate characters in a string

• Iterate through each character in the string

• Use a HashMap to store the characters and their count

• Print the characters with count greater than 1

ES6 features are new additions to JavaScript introduced in ECMAScript 2015.

• Arrow functions

• Let and const declarations

• Template literals

• Destructuring assignments

• Classes

• Promises

• Modules

Regression testing is the process of retesting modified software to ensure that the existing functionalities are not affected.

• It is performed after making changes to the software to identify any new defects or regression bugs.

• It helps in ensuring that the previously working features are still functioning correctly.

• Regression test cases are typically derived from the existing test cases.

• It can be performed manually or using automated testing tools.

• Examples: retesting a bug fix...read more

Program to sort an array of strings

• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Iterate through the array and compare adjacent elements to sort them

• Ensure the sorting algorithm is efficient and handles edge cases

Overloading is having multiple methods in the same class with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.

• Overloading is resolved at compile time based on the method signature, while overriding is resolved at runtime based on the object type.

• Overloading is used to provide different implementations of a method based on the input parameters, while overriding is used to provid...read more

List of test scenarios for mobile app release

• Functional testing of all features

• Usability testing for ease of use

• Compatibility testing on different devices and OS versions

• Performance testing for speed and responsiveness

• Security testing for data protection

• Localization testing for language and cultural differences

• Regression testing to ensure no new bugs introduced

• Accessibility testing for users with disabilities

Encapsulation is achieved by restricting access to certain components of an object and only allowing access through designated methods.

• Use access modifiers like private, protected, and public to control access to class members

• Create getter and setter methods to access and modify private variables

• Encapsulate related data and methods within a class to ensure data integrity

The question is asking for manual testing notes of Q spider.

• Q spider is a software testing training institute.

• Manual testing involves executing test cases manually without using any automation tools.

• Manual testing notes of Q spider may include topics like test case design, test execution, defect reporting, and test documentation.

• Examples of manual testing notes could be: 'How to write effective test cases?', 'Best practices for test execution', 'Defect tracking and reporting ...read more

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.

• Variable and function declarations are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations take precedence over variable declarations.

• Hoisting can lead to unexpected behavior if not understood properly.

Mutable objects can be modified after creation, while immutable objects cannot be modified.

• Mutable objects can have their state changed, while immutable objects cannot.

• Immutable objects are thread-safe, while mutable objects may require synchronization.

• Examples of mutable objects include lists, sets, and dictionaries, while examples of immutable objects include strings, numbers, and tuples.

Yes, indexing can be used in dictionaries.

• Dictionaries in Python support indexing using keys.

• You can access the value associated with a key by using the key as an index.

• Indexing in dictionaries is efficient as it uses hash tables for key-value lookup.

• Example: my_dict = {'name': 'John', 'age': 25}; print(my_dict['name']) will output 'John'.

String is immutable in order to ensure data integrity and security.

• Immutable strings prevent accidental changes to data, ensuring data integrity.

• Immutable strings allow for more efficient memory management and optimization.

• Immutable strings help prevent security vulnerabilities such as injection attacks.

• Example: In Java, once a string object is created, its value cannot be changed.

The question is asking for SQL notes of Q spider.

• Q spider is a software training institute that provides SQL courses.

• The question is asking for notes related to SQL from Q spider.

• The answer should provide a descriptive explanation of the SQL notes.

An arrow function is a concise way to write functions in JavaScript.

• Arrow functions are written using the '=>' syntax.

• They do not have their own 'this' keyword.

• They are often used for short, one-line functions.

• Example: const add = (a, b) => a + b;

WebDriver is a method used for automating web applications by controlling a browser through a programming language.

• WebDriver is a tool used for automating web applications

• It allows controlling a browser through a programming language

• It supports various programming languages like Java, Python, C#, etc.

• It provides various methods for interacting with web elements like click(), sendKeys(), getText(), etc.

Java is a popular programming language known for its platform independence and object-oriented features.

• Object-oriented programming

• Platform independence

• Garbage collection

• Exception handling

• Multithreading

• Java Virtual Machine (JVM)

• Java Development Kit (JDK)

• Application Programming Interface (API)

To build a Docker image from a Dockerfile, use the 'docker build' command.

• Navigate to the directory containing the Dockerfile

• Run the command 'docker build -t .'

• The '.' at the end of the command specifies the build context

• The '-t' flag is used to tag the image with a name and optional tag

Java program to find occurrences of characters in a string

• Create a HashMap to store characters and their counts

• Iterate through the string and update the counts in the HashMap

• Print the characters and their counts from the HashMap

Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

• Encapsulation: Objects can encapsulate data and behavior within a single unit.

• Inheritance: Objects can inherit attributes and methods from other objects.

• Polymorphism: Objects can take on different forms or have multiple behaviors.

• Example: Classes in Java or C++ are used to create objects with properties and methods.

Wrapper classes are classes that allow primitive data types to be used as objects.

• Wrapper classes provide a way to use primitive data types as objects in Java.

• They are used for typecasting and to perform various operations on primitive data types.

• Examples of wrapper classes include Integer, Float, Boolean, etc.

• Wrapper classes are commonly used in automation testing with tools like Selenium.

The question is asking for Java notes of Q spider.

• Q spider is a training institute for Java programming.

• Java notes from Q spider may include topics like object-oriented programming, data types, control statements, arrays, etc.

• Examples of Java notes from Q spider can be code snippets or explanations of Java concepts.

Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.

• Spring Boot eliminates the need for manual configuration by providing defaults for most settings.

• It allows developers to quickly set up and run standalone Spring-based applications.

• Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.

• It promotes convention over configuration, reducing the amount of boilerplate code...read more

Retesting is the process of executing tests that have previously failed to verify if the reported defects have been fixed.

• Retesting is done to ensure that the defects found in the previous test cycle have been resolved.

• It involves rerunning the failed test cases or executing the specific steps that caused the failure.

• Retesting is typically performed after the defects have been fixed and before regression testing.

• The focus of retesting is on the specific areas that were previo...read more

let, const, and var are JavaScript keywords used to declare variables with different scoping rules.

• let and const are block-scoped variables introduced in ES6, while var is function-scoped.

• let allows reassignment, while const is a constant that cannot be reassigned.

• Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their scope.

• Closure is a combination of a function and the lexical environment within which that function was declar...read more

To read an external text file, you can use file handling techniques in programming languages like Python or Java.

• Use file handling functions like open(), read(), and close() in Python to read an external text file.

• In Java, use classes like FileReader and BufferedReader to read text files.

• Specify the file path and mode (read mode) when opening the file.

• Read the contents of the file line by line or as a whole, depending on the requirements.

• Close the file after reading to releas...read more

Performance testing is a type of testing that measures the speed, responsiveness, stability, and scalability of a software application.

• It involves simulating real-world scenarios to identify bottlenecks and areas for improvement.

• Performance testing can be done at different stages of the software development life cycle.

• Examples of performance testing tools include JMeter, LoadRunner, and Gatling.

• Performance testing can help ensure that an application can handle a large number ...read more

I am familiar with protocols such as HTTP, HTTPS, TCP/IP, FTP, SMTP, and SNMP.

• HTTP - Hypertext Transfer Protocol used for web communication

• HTTPS - Secure version of HTTP using SSL/TLS encryption

• TCP/IP - Transmission Control Protocol/Internet Protocol for network communication

• FTP - File Transfer Protocol for transferring files over a network

• SMTP - Simple Mail Transfer Protocol for sending emails

• SNMP - Simple Network Management Protocol for managing network devices

SDLC stands for Software Development Life Cycle, which is a process used to design, develop, and test software.

• SDLC is a framework that outlines the steps involved in software development.

• It includes planning, designing, coding, testing, and maintenance.

• Each phase of SDLC has its own set of deliverables and objectives.

• SDLC models include Waterfall, Agile, and DevOps.

• The choice of SDLC model depends on the project requirements and team's preference.

STLC stands for Software Testing Life Cycle, which is a process followed to ensure software quality.

• STLC involves planning, designing, executing, and reporting of tests.

• It includes various phases such as requirement analysis, test planning, test design, test execution, and test closure.

• The main objective of STLC is to ensure that the software meets the specified requirements and is of high quality.

• STLC helps in identifying defects early in the development cycle, which reduces...read more

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization is used to eliminate data redundancy by breaking up tables into smaller tables and defining relationships between them.

• It helps in reducing data anomalies such as insertion, update, and deletion anomalies.

• Normalization is achieved through a series of normal forms (1NF, 2NF, 3NF, BCNF, etc.)

• For example, in a database of students and courses, instead of st...read more

My automation framework is based on the Page Object Model design pattern, utilizing TestNG for test execution and reporting.

• Utilizes Page Object Model design pattern for better code organization and maintenance

• Uses TestNG for test execution and reporting

• Employs data-driven testing for better test coverage

• Integration with CI/CD tools like Jenkins for continuous testing

• Utilizes Selenium WebDriver for browser automation

Bug life cycle or defect life cycle is the process of identifying, reporting, prioritizing, fixing, and verifying bugs in software development.

• Bug identification: Bugs are identified through testing, user feedback, or code reviews.

• Bug reporting: Bugs are reported in a bug tracking system with details like steps to reproduce, severity, and priority.

• Bug prioritization: Bugs are prioritized based on severity and impact on the system.

• Bug fixing: Developers fix the bugs by making ...read more

Software testing is the process of evaluating a software application to ensure it meets specified requirements and functions correctly.

• Identifying defects or bugs in the software

• Verifying that the software meets the specified requirements

• Ensuring the software functions correctly under different conditions

• Improving the quality and reliability of the software

• Types of software testing include unit testing, integration testing, system testing, and acceptance testing

Sales involves the process of selling products or services to customers in exchange for money.

• Sales is the process of identifying potential customers, persuading them to buy, and completing a transaction.

• It involves building relationships with customers, understanding their needs, and providing solutions.

• Sales can be done through various channels such as direct selling, online sales, or through distributors.

• Successful salespeople often have strong communication skills, produc...read more

Method of WebElement is a function that performs an action on a web element.

• Methods are used to interact with web elements on a web page

• Examples of methods include click(), sendKeys(), getText()

• Methods can be used to verify the state of a web element

Spring is a lightweight framework for building enterprise applications in Java.

• Provides comprehensive infrastructure support for developing Java applications

• Facilitates easier configuration and integration of various components

• Promotes good programming practices like dependency injection and aspect-oriented programming

• Includes modules like Spring Core, Spring MVC, Spring Security, etc.

• Example: @Autowired annotation for dependency injection

Synchronisation is the process of coordinating multiple threads or processes to work together in a specific order.

• Synchronisation is important in multi-threaded or multi-process environments to avoid race conditions and deadlocks.

• It involves the use of locks, semaphores, and other mechanisms to ensure that threads or processes access shared resources in a mutually exclusive manner.

• Synchronisation can also be achieved through message passing and other communication mechanisms....read more

Automation testing is the use of software to execute test cases and compare actual outcomes with expected outcomes.

• Automation testing helps in reducing human intervention and increasing test coverage

• It is faster and more reliable compared to manual testing

• Common tools used for automation testing include Selenium, Appium, and JUnit

SDLC stands for Software Development Life Cycle. It is a process used by software development teams to design, develop, and test high-quality software.

• SDLC consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Common SDLC models include Waterfall, Agile, Iterative, and Spiral.

• Each SDLC model has its own set of advantages and disadvantages, and is chosen based on the project requirements and constraints.

LinkedIn research refers to the process of using LinkedIn as a tool for gathering information, networking, and conducting market research.

• LinkedIn research involves using the platform to connect with professionals in your industry.

• It can also be used to gather insights on companies, job opportunities, and industry trends.

• Researchers can utilize LinkedIn's advanced search features to find specific information or individuals.

• LinkedIn research can help in building professional r...read more

Lead generation is the process of identifying and cultivating potential customers for a business's products or services.

• Involves attracting and capturing interest in a product or service

• Utilizes various marketing strategies such as content marketing, email campaigns, and social media

• Goal is to convert leads into customers through targeted communication and nurturing

• Examples include collecting email addresses through a website form or hosting a webinar to gather leads

Docker build is a command used to create a Docker image from a Dockerfile.

• Docker build is used to automate the creation of Docker images.

• It uses a Dockerfile to define the image's contents and configuration.

• The Dockerfile is a text file that contains instructions for building the image.

• The build process involves downloading dependencies, installing packages, and configuring the image.

• The resulting image can be used to create Docker containers.

• Example: docker build -t myimage ...read more

Threads of javascript refer to the concept of asynchronous programming in JavaScript. Architecture in this context likely refers to the overall structure and organization of a React Native application.

• JavaScript is single-threaded, meaning it can only execute one piece of code at a time. Asynchronous programming allows for non-blocking operations, improving performance and user experience.

• React Native architecture typically follows a component-based structure, where different...read more

Visual Studio Code

• Free and open-source code editor

• Supports multiple programming languages

• Has a large library of extensions

• Integrates with Git for version control

Performance testing is a type of testing to ensure software applications perform well under expected workload.

• Performance testing measures the speed, responsiveness, and stability of an application under various load conditions.

• It helps identify bottlenecks, assess scalability, and determine if the system meets performance requirements.

• Common types of performance testing include load testing, stress testing, and scalability testing.

• Examples of performance testing tools includ...read more

I have closed 15 deals in the past year.

• Closed 10 deals with new clients and 5 deals with existing clients.

• Achieved a 75% success rate in closing deals.

• Largest deal closed was worth $500,000.

• Implemented new sales strategies resulting in a 20% increase in closed deals.

Sanity testing is a subset of regression testing, while smoke testing is a subset of acceptance testing.

• Sanity testing is performed to ensure that the critical functionalities of the software are working as expected.

• Smoke testing is performed to verify if the software build is stable enough for further testing.

• Sanity testing is usually performed after major changes or bug fixes.

• Smoke testing is performed on each build to identify critical issues early in the development cycle...read more

A View is a virtual table created by a query that can be used to retrieve and display data from one or more tables.

• A View is not a physical table, but rather a result set of a stored query.

• Views can simplify complex queries by storing them as a reusable object.

• Views can also provide an additional layer of security by restricting access to certain columns or rows.

• Examples: 'CREATE VIEW vw_employee AS SELECT * FROM employees;'

View defines the user-interface by determining how data is presented to the user.

• View is responsible for displaying data and receiving user input.

• It includes elements like buttons, text fields, and images.

• Views can be designed using XML layouts in Android development.

• Views can be styled using CSS in web development.

Smoke testing is a preliminary testing to check if the software build is stable enough for further testing.

• Smoke testing is a subset of regression testing.

• It is performed to verify if the critical functionalities of the software are working fine.

• Smoke tests are quick and basic tests that are run on the initial build of the software.

• If the smoke tests fail, further testing is halted until the issues are fixed.

• Example: In a web application, smoke testing may involve checking if...read more

There are various types of models used in different fields such as statistical models, mathematical models, physical models, etc.

• Statistical models: Used in data analysis to make predictions or draw inferences.

• Mathematical models: Represented using mathematical equations to describe real-world phenomena.

• Physical models: Used to simulate physical systems or objects for testing or analysis.

• Computer models: Utilized in computer simulations to predict outcomes or behavior.

• Economi...read more

Different types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.

• Unit testing: Testing individual components or modules of the software.

• Integration testing: Testing how different modules work together.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing to ensure the software meets the requirements of the end users.

• Regression testing: Testing to ensure that new code changes do not adve...read more

Event loop is a mechanism in programming that allows for asynchronous execution of code by continuously checking for events and executing associated callbacks.

• Event loop is commonly used in JavaScript to handle asynchronous operations.

• It continuously checks the call stack for any pending tasks and executes them in a non-blocking manner.

• Event loop allows for efficient handling of I/O operations without blocking the main thread.

• Example: In Node.js, the event loop is responsible...read more

Use GROUP BY clause in MSSQL to group data based on a specific column.

• Use GROUP BY followed by the column you want to group by

• Can be used with aggregate functions like COUNT, SUM, AVG, etc.

• Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name

Bug life cycle is the process of a bug from identification to resolution.

• Bug is identified by tester

• Bug is logged in bug tracking tool

• Bug is assigned to developer

• Developer fixes the bug

• Bug is retested by tester

• Bug is closed if fixed or reopened if not

Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: ability for objects of different classes to respond to the same message

• Abstraction: hiding the complex implementation details and showing only the necessary features

DevOps architecture is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems development life cycle.

• DevOps architecture focuses on collaboration, automation, and monitoring throughout the software development lifecycle.

• It aims to increase the speed of software delivery, improve reliability, and build scalable systems.

• Examples of DevOps tools include Jenkins, Docker, Kubernetes, and Ansible.

Smoke testing is a preliminary testing technique used to quickly evaluate the basic functionality of a software application.

• Smoke testing is performed to ensure that the critical functionalities of the software are working as expected.

• It is usually conducted after a new build or release to identify major issues early in the testing process.

• The focus of smoke testing is on the core features and not on detailed testing.

• It helps in identifying showstopper defects that prevent fu...read more

API Gateway is a server that acts as an API front-end, receiving API requests, enforcing throttling and security policies, passing requests to the back-end service, and then passing the response back to the requester.

• API Gateway acts as a single entry point for all client requests to the backend services.

• It can handle tasks like authentication, authorization, rate limiting, caching, and request/response transformations.

• Examples of API Gateways include Amazon API Gateway, Apig...read more

SDLC process test involves testing the software at various stages of the software development life cycle.

• Testing is done at each stage of SDLC - requirements, design, implementation, and maintenance.

• It helps in identifying defects early in the development process.

• Types of testing include unit testing, integration testing, system testing, and acceptance testing.

• Testing ensures that the software meets the specified requirements and functions correctly.

• Test cases are created bas...read more

A framework is a set of guidelines, libraries, and tools that help in developing and testing software applications.

• Provides structure and guidelines for developing software

• Includes libraries and tools to simplify development tasks

• Promotes code reusability and maintainability

• Examples: Selenium WebDriver for web automation testing, TestNG for test execution and reporting

System testing is a type of software testing that evaluates the system as a whole to ensure it meets specified requirements.

• System testing is performed on a complete, integrated system to evaluate its compliance with specified requirements.

• It focuses on verifying that the system functions correctly in its intended environment.

• It includes testing the system's functionality, performance, reliability, and security.

• System testing is typically performed after integration testing a...read more

Testing of project involves thorough examination of software to ensure it meets requirements and functions correctly.

• Create test cases based on requirements

• Execute test cases to identify bugs

• Report bugs and track their resolution

• Perform regression testing to ensure fixes did not introduce new issues