40+ Talentica Software Interview Questions and Answers

Spring is a framework for building Java applications, while Spring Boot is a tool for quickly creating Spring-based applications.

• Spring provides a comprehensive framework for building Java applications, while Spring Boot is a tool that simplifies and accelerates the process of creating Spring-based applications.

• Spring requires more configuration and setup, while Spring Boot provides a pre-configured environment that requires minimal setup.

• Spring Boot includes an embedded web ...read more

REST APIs are a way to interact with web services. Popular status codes include 200, 404, and 500.

• REST APIs allow clients to access and manipulate resources on a server using HTTP requests

• Common HTTP methods used in REST APIs include GET, POST, PUT, and DELETE

• Status codes indicate the success or failure of a request, with 2xx codes indicating success and 4xx/5xx codes indicating errors

• Some popular status codes include 200 (OK), 404 (Not Found), and 500 (Internal Server Error)

Microservices, cloud-native, and serverless are the latest architectural trends in C#.

• Microservices architecture is gaining popularity due to its scalability and flexibility.

• Cloud-native architecture focuses on building applications that are optimized for cloud environments.

• Serverless architecture allows developers to focus on writing code without worrying about infrastructure management.

• Other trends include containerization, event-driven architecture, and domain-driven desig...read more

SOLID principles are a set of five design principles for writing maintainable and scalable code.

• Single Responsibility Principle (SRP) - a class should have only one reason to change

• Open-Closed Principle (OCP) - a class should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - a subclass should be able to replace its parent class without affecting the system's behavior

• Interface Segregation Principle (ISP) - a client should not be forced to d...read more

Program to find the second-highest number in a List, without sorting.

• Iterate through the list and keep track of the highest and second-highest numbers.

• Compare each number with the highest and second-highest numbers and update accordingly.

• Return the second-highest number.

BERT (Bidirectional Encoder Representations from Transformers) is a pre-trained natural language processing model.

• BERT is a transformer-based machine learning algorithm developed by Google.

• It is designed to understand the context of words in a sentence by considering both the left and right context simultaneously.

• BERT has been pre-trained on a large corpus of text data and can be fine-tuned for specific NLP tasks like text classification, question answering, and named entity ...read more

Logistic regression is a type of regression analysis used to predict the probability of a binary outcome.

• Logistic regression is used when the dependent variable is binary (e.g. 0 or 1, yes or no).

• It estimates the probability that a given input belongs to a certain category.

• The output of logistic regression is transformed using a sigmoid function to ensure it falls between 0 and 1.

• It uses the logistic function to model the relationship between the independent variables and the...read more

Using Streams API to filter and map an array of strings

• Create a stream from the array using Arrays.stream()

• Use filter() to select elements that meet a certain condition

• Use map() to transform each element into a new value

• Use toArray() to convert the stream back into an array

A Binary Search Tree is a data structure where each node has at most two children and the left child is smaller than the parent while the right child is greater.

• Nodes are arranged in a hierarchical order.

• Searching, insertion, and deletion can be done in O(log n) time complexity.

• In-order traversal of a BST gives the nodes in sorted order.

• Example: 5 is the root node, 3 is its left child, and 7 is its right child. 2 is the left child of 3 and 4 is the right child of 3.

• Example: S...read more

Both .NET Core and Framework are used for developing Windows applications, but Core is cross-platform and lightweight.

• Core is open-source and modular, while Framework is a monolithic framework

• Core has better performance and scalability than Framework

• Core supports microservices architecture, while Framework does not

• Core has a smaller footprint and can be deployed as a single executable

• Framework has better backward compatibility with older applications

REST API is a web service that uses HTTP requests to access and manipulate data.

• REST stands for Representational State Transfer

• It is an architectural style for building web services

• It uses HTTP methods like GET, POST, PUT, DELETE to perform operations on resources

• It is stateless and can be cached

• It returns data in various formats like JSON, XML, etc.

Handle StaleElementReferenceException by re-locating the element before interacting with it.

• Use try-catch block to catch StaleElementReferenceException

• Re-locate the element using findElement method before interacting with it

• Use WebDriverWait to wait for the element to become stale

My strategy for designing an automation framework involves identifying key functionalities, selecting appropriate tools, creating reusable components, implementing robust error handling, and integrating with CI/CD pipelines.

• Identify key functionalities to be automated based on priority and impact on testing.

• Select appropriate tools and technologies based on the application under test and team expertise.

• Create reusable components such as libraries, functions, and page objects ...read more

A program to check if two strings are anagrams of each other.

• Create two character arrays from the input strings

• Sort the arrays

• Compare the sorted arrays to check if they are equal

Ref and out are both used for passing arguments by reference in C#. Ref is bidirectional while out is unidirectional.

• Ref and out are used to pass arguments by reference instead of by value

• Ref is used for both input and output parameters while out is only used for output parameters

• Ref requires the variable to be initialized before passing while out does not

• Example: void MyMethod(ref int x) { x = x + 1; } and void MyMethod(out int y) { y = 1; }

Reversing a linked list in Java using iterative approach.

• Create three pointers: prev, current, and next.

• Iterate through the list, updating pointers to reverse the links.

• Return the new head of the reversed list.

AB testing is a method used to compare two versions of a webpage or app to determine which one performs better.

• AB testing involves creating two versions (A and B) of a webpage or app with one differing element

• Users are randomly assigned to either version A or B to measure performance metrics

• The version that performs better in terms of the desired outcome is selected for implementation

• Example: Testing two different call-to-action buttons to see which one generates more clicks

Memory management in C# involves automatic garbage collection and the use of pointers.

• C# uses a garbage collector to automatically manage memory allocation and deallocation.

• Developers can use pointers to directly manipulate memory, but this is not recommended.

• C# also provides tools for managing memory usage, such as the IDisposable interface and the using statement.

apply, call, and bind are methods used to manipulate the context of a function in JavaScript.

• apply() - calls a function with a given 'this' value and arguments provided as an array

• call() - calls a function with a given 'this' value and arguments provided individually

• bind() - creates a new function that, when called, has its 'this' keyword set to the provided value

Major advancements in .NET Core include improved performance, cross-platform compatibility, and enhanced security features.

• Improved performance through the use of Span and other optimizations

• Cross-platform compatibility with support for Linux and macOS

• Enhanced security features such as runtime code generation and data protection

• Introduction of .NET Core 3.0 with support for Windows Desktop applications

• Integration with Docker and Kubernetes for containerization and orchestrati...read more

Call, bind, and apply are methods used to manipulate the value of 'this' in JavaScript functions.

• Call: Invokes a function with a specified 'this' value and arguments provided individually.

• Example: func.call(thisArg, arg1, arg2)

• Bind: Creates a new function that, when called, has a specified 'this' value and arguments provided one by one.

• Example: var newFunc = func.bind(thisArg, arg1, arg2)

• Apply: Invokes a function with a specified 'this' value and arguments provided as an arra...read more

Program to reverse a linked list

• Iterate through the linked list and change the direction of the pointers

• Use three pointers to keep track of the current, previous and next nodes

• Handle the edge cases of empty list and single node list

The react machine coding example involves demonstrating knowledge and skills in React programming.

• Understand the component lifecycle in React

• Demonstrate proficiency in state management using hooks or Redux

• Show ability to create reusable components and handle user input

• Implement routing and navigation in React applications

Retesting is testing the same functionality again after fixing the defects. Regression is testing the unchanged functionality after making changes.

• Retesting is done to ensure that the defects have been fixed and the functionality is working as expected.

• Regression is done to ensure that the changes made to the software have not affected the existing functionality.

• Retesting is a subset of regression testing.

• Retesting is done after fixing the defects found during the previous te...read more

Print unique numbers in list

• Iterate through the list and store each number in a set to keep track of unique numbers

• Print out the numbers in the set to display the unique numbers

Designing item inventory for a shopping portal

• Identify categories and subcategories of items

• Create a database to store item information

• Include item name, description, price, image, and availability

• Implement search and filter options for easy navigation

• Allow users to add items to their cart and checkout

• Include a review and rating system for items

• Regularly update inventory to ensure accuracy

GET method is used to request data from a specified resource, while POST method is used to submit data to a specified resource.

• GET requests data from a specified resource, while POST submits data to a specified resource

• GET requests are cached, can be bookmarked, and remain in the browser history, while POST requests are not cached and do not remain in the browser history

• GET requests have length restrictions, while POST requests do not

• GET requests should only be used to retrie...read more

Closures are functions that have access to variables from their containing scope even after the scope has closed.

• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• They help in maintaining state in asynchronous operations.

• Closures are commonly used in event handlers and callbacks.

Sanity and Smoke are types of software testing. Sanity tests a specific functionality while Smoke tests the entire system.

• Sanity testing is a narrow and deep testing approach while Smoke testing is a broad and shallow testing approach.

• Sanity testing is performed after a small change in code while Smoke testing is performed after a major change in code.

• Sanity testing is used to check if the critical functionalities are working fine while Smoke testing is used to check if the s...read more

Response codes in API indicate the status of a request

• Response codes are standardized codes sent by a server in response to a client's request

• Common response codes include 200 (OK), 404 (Not Found), and 500 (Internal Server Error)

• Each response code has a specific meaning and helps in troubleshooting API requests

FlatList is optimized for rendering large lists efficiently by only rendering the items that are currently visible, while ScrollView renders all of its children at once.

• FlatList is more performant for long lists as it only renders the items that are currently visible on the screen.

• ScrollView renders all of its children at once, which can lead to performance issues with large datasets.

• FlatList supports key extraction for efficient rendering, while ScrollView does not have buil...read more

Life cycle methods are special methods in class components that allow developers to run code at specific points in the component's life cycle.

• componentDidMount() is called after the component has been rendered to the DOM.

• componentDidUpdate() is called after the component's state or props have been updated.

• componentWillUnmount() is called before the component is removed from the DOM.

Java code to reverse a string

• Use StringBuilder class to reverse the string

• Call reverse() method on the StringBuilder object

• Convert the StringBuilder object back to String using toString() method

CAP theorem states that a distributed system cannot guarantee consistency, availability, and partition tolerance at the same time.

• Consistency: all nodes see the same data at the same time

• Availability: every request receives a response, without guarantee that it contains the most recent version of the information

• Partition tolerance: system continues to function even when network partitions occur

• Examples: Cassandra prioritizes availability and partition tolerance over consisten...read more

Design a system for Rtl Visa

• Identify the requirements and constraints of the system

• Design the architecture and components of the system

• Implement the system using appropriate technologies

• Test and validate the system to ensure it meets the requirements

• Integrate the system with existing systems and processes

API testing methods involve functional, performance, security, and exploratory testing.

• Functional testing ensures that the API meets the requirements and specifications.

• Performance testing checks the API's response time, throughput, and resource utilization.

• Security testing verifies the API's authentication, authorization, and encryption mechanisms.

• Exploratory testing involves ad-hoc testing to discover defects and usability issues.

• Tools like Postman, SoapUI, and JMeter can b...read more

Seeking new challenges and growth opportunities in a dynamic environment.

• Desire for new challenges and growth

• Interest in working in a dynamic environment

• Opportunity to learn new technologies and tools

My future goals in DevOps include mastering new technologies, automating processes, and improving collaboration between teams.

• Continuously learning and mastering new technologies in the DevOps ecosystem

• Automating manual processes to increase efficiency and reduce errors

• Improving collaboration and communication between development, operations, and other teams

• Implementing best practices for continuous integration and continuous delivery (CI/CD)

• Enhancing security measures and im...read more

React is a JavaScript library for building user interfaces.

• React is a declarative, efficient, and flexible JavaScript library for building user interfaces.

• It allows developers to create reusable UI components.

• React uses a virtual DOM to improve performance by only updating the necessary parts of the actual DOM.

• React follows a unidirectional data flow, making it easier to understand how data changes over time.

• React can be used to build single-page applications, mobile apps, an...read more

Redux is a predictable state container for JavaScript apps, while Context API is a feature in React for passing data through the component tree.

• Redux is more suitable for larger applications with complex state management needs.

• Context API is simpler to use and is built into React, reducing the need for additional libraries.

• Redux provides a single source of truth for the application state, making it easier to debug and trace changes.

• Context API is recommended for simpler state...read more