Talentica Software Interview Questions, Process, and Tips

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 Segreg...read more

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 MyMeth

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 ...read more

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.

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 containeri...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 compa

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 ...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.

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

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 prior...read more

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 th...read more

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 usa...read more

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 ...read more

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 ...read more