10+ Cognizant Associate Software Engineer Interview Questions and Answers

This program calculates the frequency of a given alphabet in a string using a basic C program.

• Declare an array of size 26 to store the frequency of each alphabet

• Iterate through the string character by character

• For each character, check if it is an alphabet

• If yes, increment the corresponding frequency count in the array

• Print the frequency of the desired alphabet

Primary key uniquely identifies a record in a table, while unique key ensures uniqueness of a column.

• Primary key cannot have null values, while unique key can have one null value.

• A table can have only one primary key, but multiple unique keys.

• Primary key is automatically indexed, while unique key may or may not be indexed.

• Example: Primary key - employee ID, Unique key - email address

AI, IoT, Blockchain, Cloud Computing, AR/VR, 5G

• Artificial Intelligence (AI) and Machine Learning (ML) for automation and decision-making

• Internet of Things (IoT) for connected devices and data collection

• Blockchain for secure and transparent transactions

• Cloud Computing for scalable and flexible infrastructure

• Augmented Reality (AR) and Virtual Reality (VR) for immersive experiences

• 5G for faster and more reliable connectivity

PowerApps customisation involves leveraging different properties to customise the canvas app.

• Use the 'Properties' pane to access and modify different properties of the app components.

• Customise the app's appearance using themes, fonts, and colours.

• Leverage formulas and expressions to add functionality to the app.

• Use custom connectors to integrate with external data sources.

• Add custom controls and components to extend the app's functionality.

• Test and debug the app using the 'Pr...read more

There are various types of databases such as relational, NoSQL, object-oriented, etc. Some popular databases nowadays include MySQL, MongoDB, PostgreSQL, and Oracle.

• Relational databases: MySQL, PostgreSQL, Oracle

• NoSQL databases: MongoDB, Cassandra, Redis

• Object-oriented databases: db4o, ObjectDB

• Graph databases: Neo4j, Amazon Neptune

Azure Functions are serverless computing solutions that allow developers to run code on-demand without managing infrastructure.

• Create a new Azure Function App in the Azure portal

• Choose a language and runtime for your function

• Write your function code and test it locally

• Publish your function to Azure using Visual Studio or Azure CLI

• Configure your function app settings and triggers

• Monitor and troubleshoot your function using Azure Application Insights

Supervised learning uses labeled data to train a model, while unsupervised learning uses unlabeled data.

• Supervised learning requires a target variable for training the model.

• Examples of supervised learning include classification and regression tasks.

• Unsupervised learning finds patterns in data without any predefined labels.

• Examples of unsupervised learning include clustering and dimensionality reduction.

Python is a high-level programming language used for web development, data analysis, artificial intelligence, and automation.

• Python is easy to learn and has a simple syntax

• Python supports multiple programming paradigms such as object-oriented, functional, and procedural programming

• Python has a vast standard library with modules for various tasks such as web development, data analysis, and machine learning

• Python is used for web development frameworks such as Django and Flask

• Py...read more

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain both data and functions.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Encapsulation is the process of hiding the implementation details of an object from the outside world.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects to take on multiple forms or beh...read more

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

• SDLC is a structured approach to software development

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

• Each phase has its own set of activities and deliverables

• SDLC models include Waterfall, Agile, and DevOps

• SDLC helps ensure software quality and reduces development time and cost

I would write a code snippet based on the specific cluster or category provided.

• Identify the specific cluster or category provided in the question

• Write a code snippet that aligns with the requirements of the cluster

• Ensure the code is accurate and relevant to the given cluster

SQL Joins are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from...read more