CGI Group Interview Questions, Process, and Tips

Q1. React native hooks
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Q2. Component architecture
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Q1. Javascript programs
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Q2. Coding
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Q1. What framework you are using in your project?
Ans. 
We are using the Selenium framework for automation testing in our project.
• Selenium is a popular open-source automation testing framework

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

• Selenium WebDriver is used for automating web applications

• It provides features for browser automation, testing across different browsers, and parallel test execution
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Q2. Explain about the framework structure
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Framework structure refers to the organization and layout of the automation framework components.
• Framework structure includes modules, libraries, test scripts, configuration files, and test data.

• It follows a hierarchical structure with layers such as driver scripts, reusable libraries, and test cases.

• Frameworks can be structured as linear, modular, data-driven, keyword-driven, or hybrid.

• Example: In a data-driven framew...read more
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Q3. Difference between findelement and findelements
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findelement returns the first matching element on a webpage, findelements returns a list of all matching elements.
• findelement returns a single WebElement, findelements returns a list of WebElements

• findelement throws NoSuchElementException if no element is found, findelements returns an empty list

• Example: driver.findElement(By.id("exampleId")) vs driver.findElements(By.className("exampleClass"))
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Q4. How to handle multiple tabs in selenium
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Handling multiple tabs in Selenium involves switching between tabs and performing actions on each tab.
• Use getWindowHandles() to get a set of window handles

• Switch to a specific tab using switchTo().window(handle)

• Perform actions on the tab

• Close the tab if needed using driver.close()
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Q5. Explain about hashmaps
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Hashmaps are data structures that store key-value pairs and allow for efficient retrieval of values based on keys.
• Hashmaps are also known as dictionaries, maps, or associative arrays.

• They use a hash function to map keys to indices in an underlying array.

• Hashmaps offer constant-time average case complexity for insertion, deletion, and lookup operations.

• Example: HashMap map = new HashMap<>(); map.put("ke
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Q6. Why we use try and catch
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Try and catch blocks are used in programming to handle exceptions and prevent the program from crashing.
• Try block is used to enclose the code that might throw an exception

• Catch block is used to handle the exception thrown in the try block

• It prevents the program from crashing and allows for graceful error handling

• Can also include finally block to execute code regardless of whether an exception is thrown
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Q7. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access the properties and methods of the base class

• Example: Class 'Car' can inherit from class 'Vehicle'
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Q1. What are microservices according to you?
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Microservices are a software development technique where an application is divided into smaller, independent services that communicate with each other through APIs.
• Microservices are small, independent services that focus on specific business functions.

• Each microservice can be developed, deployed, and scaled independently.

• Microservices communicate with each other through APIs, typically using lightweight protocols like ...read more
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Q2. Explain Microservices Architecture used in your project
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Microservices architecture is a design approach where a single application is composed of small, independent services that communicate with each other.
• Each microservice is responsible for a specific business function or capability

• Microservices communicate with each other through APIs

• Each microservice can be developed, deployed, and scaled independently

• Microservices architecture promotes flexibility, scalability, and re
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Q3. How are 4-5 microservices connected in rest api's? which technique you are using?
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Microservices are connected in REST APIs using communication protocols like HTTP, messaging queues, and service discovery.
• Microservices communicate with each other using HTTP requests and responses.

• Messaging queues like RabbitMQ or Kafka can be used for asynchronous communication between microservices.

• Service discovery tools like Eureka or Consul help in locating and connecting to different microservices.

• API Gateway ca...read more
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Q4. Coding question - 1. Create a immutable class of orders. What happens when two objects are created out of it. 2.Using the immutable orders create a set of orders and how will you sort these out. 3.Given ...read more
Ans. 
Creating immutable class of orders, sorting orders, finding average of lists of integers.
• Create an immutable class Orders with private final fields and no setter methods.

• Override equals() and hashCode() methods to ensure uniqueness of objects.

• Use Collections.unmodifiableSet() to create a set of orders and Collections.sort() to sort them.

• Iterate through the List of List of String of integers, convert to integers, and ca
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Q1. Explain Spring Cloud and how you are using in microservices?
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Spring Cloud is a set of tools and frameworks for building cloud-native applications in Java.
• Spring Cloud provides tools for service discovery, load balancing, configuration management, and more in microservices architecture.

• It includes projects like Eureka for service discovery, Ribbon for client-side load balancing, and Config Server for externalized configuration.

• Spring Cloud integrates with Spring Boot to simplify ...read more
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Q2. Explain your deployment build config?
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Deployment build config includes settings for deploying the application.
• Use tools like Maven or Gradle to manage dependencies and build the project

• Specify deployment environment configurations in a separate file (e.g. application.properties)

• Define build scripts for tasks like compiling, packaging, and deploying the application

• Leverage CI/CD pipelines for automated builds and deployments
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Q1. Explain your project?
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Q2. Your expectations from the company
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Given a project, you need to create logic for a service using helpers and finally give a aggregate of the final converted price .

Given few java 8 programming functions, you need to convert them to respective java 11 functions

Q1. Design pattern with example
Ans. 
Factory design pattern is used to create objects without specifying the exact class of object that will be created.
• Factory method creates objects without specifying the exact class of object that will be created.

• It provides a way to delegate the instantiation logic to child classes.

• Example: Java's Calendar.getInstance() method returns a Calendar object based on the current timezone and locale.
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Q2. Explain concepts of redux
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Redux is a predictable state container for JavaScript apps.
• Centralized state management

• State is read-only

• Changes are made with pure functions (reducers)

• Actions are dispatched to update state

• Used with React for managing application state
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