100+ Phoenix Robotix Interview Questions and Answers

The interview questions cover topics like oops concepts, deferred defects, defect priority and severity, test scenarios for order placement, SDLC and STLC.

• Oops concepts refer to Object-Oriented Programming principles like Inheritance, Polymorphism, Encapsulation, and Abstraction.

• Deferred defect is a bug that is not fixed immediately but is scheduled to be fixed in a future release.

• Priority of a defect determines the order in which it should be fixed, while severity indicates ...read more

OOP stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent and manipulate data.

• OOP focuses on creating reusable code by organizing data and behavior into objects.

• Objects have properties (attributes) and methods (functions) that can be accessed and manipulated.

• Inheritance allows objects to inherit properties and methods from parent objects.

• Polymorphism allows objects to take on multiple forms and behave differently depending on the ...read more

CMDs are commands used in Windows Command Prompt to perform various tasks.

• dir - lists all files and folders in the current directory

• cd - changes the current directory

• ipconfig - displays network information

• ping - tests network connectivity

• tasklist - displays a list of running processes

• shutdown - shuts down the computer

• help - displays a list of available commands with brief descriptions

Yes, I can create my own framework. It would have a modular structure with reusable components and clear documentation.

• The framework would have a clear directory structure for easy navigation

• It would have reusable components for common testing tasks such as logging and reporting

• The framework would be modular, allowing for easy addition or removal of components

• Clear documentation would be provided for ease of use and maintenance

SQL queries are used to retrieve data from a database. Examples include SELECT, INSERT, UPDATE, and DELETE.

• SELECT * FROM customers WHERE city = 'New York'

• INSERT INTO orders (customer_id, order_date, total_amount) VALUES (1, '2021-01-01', 100.00)

• UPDATE products SET price = 10.99 WHERE id = 1

• DELETE FROM orders WHERE id = 5

Secure WEB API in .NET by using authentication, authorization, HTTPS, and input validation.

• Use authentication mechanisms like JWT tokens or OAuth for secure access.

• Implement authorization to control which users have access to specific resources.

• Enable HTTPS to encrypt data transmitted between client and server.

• Implement input validation to prevent injection attacks like SQL injection or cross-site scripting.

ES6 features are modern JavaScript syntax and features that make code more concise and readable.

• Arrow functions for concise function syntax

• Template literals for easier string interpolation

• Let and const for block-scoped variables

• Destructuring for easily extracting values from objects and arrays

• Spread and rest operators for easily manipulating arrays and objects

• Classes for object-oriented programming

• Modules for better code organization and reusability

DORA process is a framework for measuring and improving software delivery performance.

• DORA stands for DevOps Research and Assessment

• It involves collecting data on key performance indicators (KPIs) related to software delivery

• The data is used to assess the organization's performance and identify areas for improvement

• Examples of KPIs include deployment frequency, lead time for changes, and time to restore service

• The process helps organizations optimize their software delivery p...read more

An exception is an unexpected event that occurs during program execution, while an error is a mistake in the code that prevents it from running.

• Exceptions are handled using try-catch blocks

• Errors are usually detected during compilation or runtime

• Examples of exceptions include null pointer exceptions and arithmetic exceptions

• Examples of errors include syntax errors and logical errors

Routings in MVC define how the application responds to client requests.

• Routings map URLs to controller actions in MVC framework

• Routes are defined in RouteConfig.cs file in ASP.NET MVC

• Routes can include parameters and constraints

• Example: routes.MapRoute('Default', '{controller}/{action}/{id}', new { controller = 'Home', action = 'Index', id = UrlParameter.Optional })

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

• Hoisting applies to both variables and function declarations.

• Variable declarations are hoisted but not their initializations.

• Function declarations are fully hoisted, allowing them to be called before they are defined.

• Inline elements are displayed on the same line as their adjacent elements.

• Inline-block elements are displayed inline but can have a width and height, an...read more

Given an array of integers, return the sum of all even numbers.

• Use Array.reduce() method to iterate over the array and sum the even numbers.

• Use the modulo operator (%) to check if a number is even.

My project followed the SDLC process to ensure efficient and effective software development.

• The project started with the planning phase where we identified the requirements and goals.

• Next, we moved on to the design phase where we created a detailed design document.

• Then, we entered the development phase where we wrote the code and tested it.

• After that, we moved on to the testing phase where we tested the software for bugs and errors.

• Finally, we entered the maintenance phase wh...read more

Lists are used to store data while libraries are used to store documents.

• Lists are used to store structured data while libraries are used to store unstructured data.

• Lists can have custom columns while libraries have default columns like name, modified date, etc.

• Lists can have workflows while libraries can have versioning and check-in/check-out features.

• Examples of lists include task lists, calendar lists, and contact lists while examples of libraries include document librarie...read more

Different types of testing include system and integration testing, as well as database testing.

• System and integration testing involves testing the entire system or its components to ensure they work together correctly.

• Database testing involves testing the integrity, accuracy, and performance of the database.

• Other types of testing include unit testing, regression testing, performance testing, security testing, and usability testing.

• Unit testing focuses on testing individual un...read more

The given matrix provides information about the CTR, conversion rate, and number of conversions.

• CTR stands for Click-Through Rate, which is the percentage of people who click on an ad after seeing it.

• Conv. Rate refers to the percentage of people who complete a desired action, such as making a purchase, after clicking on an ad.

• No. Con represents the total number of conversions.

• With a CTR of 2% and a Conv. Rate of 20%, we can calculate the number of impressions by dividing the ...read more

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

• Allows for easier testing by mocking dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

Garbage collection is an automatic memory management process used in programming languages to reclaim memory occupied by objects that are no longer in use.

• Garbage collection automatically identifies and deletes objects in memory that are no longer needed by the program.

• It helps prevent memory leaks and improves the efficiency of memory usage.

• Examples of programming languages that use garbage collection include Java, C#, and Python.

You can read data from Excel using Selenium by using Apache POI library.

• Use Apache POI library to interact with Excel files in Selenium

• Create a FileInputStream object to read the Excel file

• Use WorkbookFactory to create a workbook object from the FileInputStream

• Get the desired sheet from the workbook using getSheet() method

• Iterate through rows and cells to read data from Excel sheet

Priority Severity defines the importance and impact of a defect on the system.

• Priority is the level of urgency to fix a defect, based on its impact on the system.

• Severity is the level of impact a defect has on the system, based on its functionality.

• Examples: High priority and high severity - system crash, Low priority and high severity - spelling mistake in UI

• Priority and severity can be subjective and vary based on the project and stakeholders.

SharePoint online search uses a search index to retrieve relevant results based on user queries.

• Search index is created by crawling content sources

• Queries can be refined using filters and sorting options

• Search results can include documents, sites, lists, and people

• Search can be customized using search schema and managed properties

Screenshots can be taken in Selenium using the TakesScreenshot interface. Frames can be handled using switchTo() method. Core Java is the base language for Selenium.

• To take a screenshot in Selenium, create an object of TakesScreenshot interface and call getScreenshotAs() method

• To handle frames in Selenium, use switchTo() method and pass the frame index, name or WebElement as parameter

• Core Java concepts like inheritance, polymorphism, exception handling, etc. are important for...read more

Microservices are smaller, independent services that work together, while Monolithic is a single, large application.

• Microservices are smaller, independent services that can be developed, deployed, and scaled independently.

• Monolithic architecture is a single, large application where all components are tightly coupled.

• Microservices promote flexibility, scalability, and fault isolation.

• Monolithic applications are easier to develop but harder to maintain and scale.

• Examples of mic...read more

Directives in web development are markers on a DOM element that tell AngularJS to attach a specified behavior to that DOM element or even transform the DOM element and its children.

• Directives are used to create reusable components in AngularJS.

• Custom directives can be created by using the 'directive' function in AngularJS.

• Custom directives can be used to add new behavior or functionality to HTML elements.

• Example: Creating a custom directive to show a tooltip on hover.

Automate with one by one array using Selenium code

• Create an array of strings

• Iterate through the array and perform actions on each element

• Use Selenium commands to interact with web elements

SDLC stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software products. STLC stands for Software Testing Life Cycle, which is a subset of SDLC focused on testing activities.

• SDLC involves planning, designing, coding, testing, and deployment stages

• STLC involves test planning, test design, test execution, and test closure stages

• SDLC is a broader process that includes STLC as one of its ph...read more

Interface defines a contract for classes to implement, while abstract class can have both abstract and concrete methods. Virtual method can be overridden in derived classes.

• Interface only contains method signatures, while abstract class can have method implementations.

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

• Virtual method in C# allows a method in a base class to be overridden in derived classes.

• Virtual methods are used for polymo...read more

Data structures and algorithms are essential for efficient software development.

• Data structures are used to organize and store data in a way that allows for efficient access and manipulation.

• Algorithms are used to solve problems and perform operations on data structures.

• Examples of data structures include arrays, linked lists, trees, and graphs.

• Examples of algorithms include sorting, searching, and graph traversal.

• Understanding data structures and algorithms is crucial for op...read more

SDLC is a process used to develop software from planning to deployment.

• SDLC stands for Software Development Life Cycle

• It includes phases like planning, analysis, design, implementation, testing, and maintenance

• Each phase has its own set of activities and deliverables

• For example, in the planning phase, the project scope and requirements are defined

• In the design phase, the software architecture and user interface are created

• In the implementation phase, the code is written and i...read more

Remove duplicate words from a given string

• Split the string into individual words

• Use a set to keep track of unique words

• Iterate through the words and add them to the set if not already present

• Convert the set back to an array of strings

Yes, I have 3 years of experience working as a DevOps Engineer in a fast-paced tech company.

• Managed CI/CD pipelines using tools like Jenkins and GitLab

• Automated infrastructure provisioning with Terraform

• Implemented monitoring and alerting using tools like Prometheus and Grafana

Stored procedures are precompiled SQL queries stored in the database, while functions are reusable blocks of code that return a value.

• Stored procedures are used for performing specific tasks or operations in the database.

• Functions are used to encapsulate logic and can be called from within SQL queries or other functions.

• Stored procedures can have input and output parameters, while functions always return a value.

• Stored procedures can modify data in the database, while functio...read more

I know various writing tools such as Microsoft Word, Google Docs, Adobe FrameMaker, and MadCap Flare.

• Microsoft Word is a popular word processing tool used for creating and editing documents.

• Google Docs is a cloud-based tool that allows for collaboration and real-time editing of documents.

• Adobe FrameMaker is a desktop publishing tool used for creating technical documents.

• MadCap Flare is a single-source authoring tool used for creating online help and documentation.

Inbound calls are received by the company from customers, while outbound calls are made by the company to customers.

• Inbound calls are initiated by customers seeking assistance or information.

• Outbound calls are initiated by the company for sales, marketing, or follow-up purposes.

• Inbound calls are typically toll-free for customers, while outbound calls may incur charges.

• Examples: Inbound call - Customer calling a technical support hotline. Outbound call - Sales representative c...read more

MSTP rules for Technical Writers

• Use active voice

• Avoid using jargon and technical terms

• Use simple and concise language

Data can be shared between components in web development using props, state management libraries like Redux, context API, event bus, and local storage.

• Use props to pass data from parent to child components

• Utilize state management libraries like Redux to store and share data across components

• Leverage context API to share data without having to pass props through every level of the component tree

• Implement an event bus to allow communication between components that are not direc...read more

We use a variety of tools and third-party services to enhance our Magento development process.

• We use Git for version control and collaboration.

• We use PhpStorm as our primary IDE.

• We use Jenkins for continuous integration and deployment.

• We use New Relic for performance monitoring and optimization.

• We use Cloudflare for content delivery and security.

• We use Stripe for payment processing.

• We use ShipStation for order fulfillment.

• We use Google Analytics for tracking and analysis.

• We u...read more

SQL query for 2nd highest salary

• Use ORDER BY and LIMIT to get the highest salary

• Use subquery to exclude the highest salary and get the second highest

Dispatch queue is a queue of tasks that are executed in a first-in, first-out order.

• Dispatch queue is used for managing concurrent tasks in iOS and macOS applications.

• It is a way to manage the execution of tasks in a serial or concurrent manner.

• Tasks can be added to a dispatch queue using dispatch_async() or dispatch_sync() functions.

• Dispatch queue can be either serial or concurrent.

• Serial queue executes tasks in a first-in, first-out order, while concurrent queue executes ta...read more

My Selenium framework is a data-driven framework using TestNG for test execution and reporting.

• Uses TestNG for test execution and reporting

• Data-driven framework for easy maintenance and scalability

• Utilizes Page Object Model for better code organization and reusability

Java code to find max number from array of strings

• Convert array of strings to array of integers using Integer.parseInt()

• Initialize max variable with Integer.MIN_VALUE

• Iterate through array and update max if current element is greater

• Return max value

Default ads are pre-designed advertisements that are displayed when no other ads are available.

• Default ads are used as a backup when there are no other ads to display.

• They are pre-designed and can be created by the ad network or the website owner.

• Default ads are usually less effective than targeted ads.

• They can be used to promote the website or a specific product or service.

• Default ads can also be used to fill empty ad spaces and prevent blank spaces on the website.

Lazy loading images can improve performance by only loading images when they are in the viewport.

• Lazy loading images

• Minifying CSS and JavaScript files

• Using a content delivery network (CDN)

• Implementing server-side rendering

• Optimizing images for web

The 7 Ps of Marketing in services industry are Product, Price, Place, Promotion, People, Process, and Physical Evidence.

• Product - the service being offered to customers

• Price - the cost of the service

• Place - the location where the service is provided

• Promotion - marketing and advertising strategies to promote the service

• People - the employees who deliver the service

• Process - the procedures and systems used to deliver the service

• Physical Evidence - tangible elements that represe...read more

Serverless refers to a cloud computing model where the cloud provider manages the infrastructure and automatically allocates resources as needed.

• Serverless computing allows developers to focus on writing code without worrying about managing servers or infrastructure.

• Resources are dynamically allocated and scaled based on demand, leading to cost efficiency.

• Examples of serverless platforms include AWS Lambda, Azure Functions, and Google Cloud Functions.

Overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class. Overloading is when multiple methods have the same name but different parameters.

• Overriding: Subclass provides specific implementation of a method from parent class. Example: Animal class has a method 'sound', Cat class overrides it with 'meow'.

• Overloading: Multiple methods with same name but different parameters. Example: calculateArea(int side), calcula...read more

Tags are labels or keywords that are used to categorize and organize content.

• Tags are commonly used on social media platforms to group posts with similar content.

• They can also be used on websites to help users find related content.

• Tags can be created by users or automatically generated based on the content.

• They are often displayed as clickable links that lead to a list of other content with the same tag.

Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.

• Variables declared with var are hoisted to the top of their scope

• Function declarations are hoisted before variables

• Function expressions are not hoisted

• Let and const declarations are not hoisted

Our current project framework is based on Selenium WebDriver and TestNG for automated testing of web applications.

• Utilizes Selenium WebDriver for automating web browser interactions

• Uses TestNG for test case management and execution

• Integrates with Jenkins for continuous integration and deployment

The business flow of the project refers to the sequence of steps involved in achieving the project's objectives.

• Identify project objectives

• Define project scope

• Create project plan

• Execute project plan

• Monitor and control project progress

• Close project

Tuple classes are classes that represent a fixed-size collection of elements.

• Tuple

• Pair

• Triple

• Quadruple

Abstract classes are partially implemented classes while interfaces are fully abstract classes.

• Abstract classes can have both implemented and abstract methods while interfaces can only have abstract methods.

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

• Abstract classes can have constructors while interfaces cannot.

• Interfaces are used for achieving multiple inheritance in Java.

• An abstract class can be used as a base class for other clas...read more

HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.

• HashMap uses hashing to store and retrieve key-value pairs efficiently.

• Keys in a HashMap must be unique, but values can be duplicated.

• HashMap allows for null keys and null values.

• Example: HashMap map = new HashMap<>(); map.put("apple", 5); int value = map.get("apple");

Promises are a way to handle asynchronous operations in JavaScript.

• Promises represent a value that may not be available yet.

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

• Promises can be chained using .then() and .catch() methods.

• They help avoid callback hell and make code more readable.

• Example: new Promise((resolve, reject) => { ... }).then(result => { ... }).catch(error => { ... })

chop and chomp are string manipulation functions in programming languages.

• chop removes the last character from a string

• chomp removes the newline character from the end of a string

• Both functions are commonly used in languages like Perl and Ruby

Azure Functions is a serverless compute service that allows you to run event-triggered code without managing infrastructure.

• Azure Functions allows you to write small pieces of code that run in response to events.

• It supports multiple programming languages like C#, JavaScript, Python, etc.

• Functions can be triggered by various events like HTTP requests, timers, queues, etc.

• Azure Functions automatically scales based on demand, so you only pay for what you use.

• You can easily integ...read more

Microservices are a software development technique where applications are composed of small, independent services that communicate with each other.

• Microservices break down applications into smaller, loosely coupled services

• Each service is responsible for a specific function and can be developed, deployed, and scaled independently

• Communication between services is typically done through APIs

• Examples of companies using microservices include Netflix, Amazon, and Uber

The find command in Linux is used to search for files and directories in a specified location.

• The basic syntax of the find command is 'find [path] [expression]'.

• The path specifies the location to search in.

• The expression specifies the criteria for the search.

• Some common expressions include -name, -type, -size, and -mtime.

• Examples: 'find /home/user -name '*.txt'' searches for all files with a .txt extension in the /home/user directory.

• 'find /var/log -type f -size +1M' searches...read more

Grep command is used to search for a specific pattern in a file or multiple files in Linux.

• Syntax: grep [options] pattern [file]

• Options: -i (ignore case), -v (invert match), -c (count matches), -n (show line numbers)

• Example: grep 'error' file.txt

• Example: grep -i 'error' *.log

• Example: grep -c 'error' file.txt

Object-oriented programming concepts like inheritance, polymorphism, encapsulation, and abstraction.

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

• Polymorphism: Ability to present the same interface for different data types.

• Encapsulation: Bundling of data with the methods that operate on that data.

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

The process of creating a web page involves planning, designing, coding, testing, and launching.

• Plan the layout and content of the web page

• Design the visual elements using HTML, CSS, and possibly JavaScript

• Code the web page using the chosen technologies

• Test the web page for functionality and responsiveness

• Launch the web page on a server for public access

Closure in JavaScript is the combination of a function and the lexical environment within which that function was declared.

• A closure allows a function to access variables from an outer function even after the outer function has finished executing.

• Closures are created every time a function is created, at function declaration time.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }

• Example: const innerFun...read more

Angular is a popular open-source web application framework developed by Google.

• Angular is used for building dynamic web applications.

• It allows for the creation of single-page applications.

• Angular uses TypeScript for building applications.

• It provides features like data binding, dependency injection, and routing.

• Angular has a component-based architecture.

Regression is the process of retesting a software application after changes have been made to ensure that the existing functionalities are not affected.

• Regression testing is done to make sure that new code changes do not adversely impact the existing functionality of the software.

• It involves running previously executed test cases to check if any defects have been introduced due to recent code modifications.

• Regression testing can be automated to save time and effort in retesti...read more

Design a database for a college

• Identify entities such as students, faculty, courses, departments, etc.

• Create tables for each entity with appropriate attributes

• Establish relationships between tables using foreign keys

• Consider normalization to avoid data redundancy

• Implement security measures to protect sensitive data

CDAC stands for Centre for Development of Advanced Computing. It is an organization that specializes in research and development in the field of IT.

• CDAC is a premier R&D organization under the Ministry of Electronics and Information Technology, Government of India.

• It offers various courses and training programs in advanced computing technologies.

• CDAC is known for its work in areas such as high-performance computing, software development, and cybersecurity.

• One of the popular c...read more

Event loop in JavaScript manages asynchronous operations by executing callback functions in a queue.

• Event loop is responsible for handling asynchronous operations in JavaScript.

• It allows non-blocking I/O operations by executing callback functions in a queue.

• Event loop continuously checks the call stack and the callback queue to prioritize tasks.