CXL Technologies Interview Questions and Answers

Calculate the number of distinct subsequences in a string with possible duplicates.

• Iterate through the string and keep track of the count of each character.

• Use dynamic programming to calculate the number of distinct subsequences.

• Consider the cases where a character is included or excluded in the subsequence.

• Modulo the final count by 10^9 + 7 to handle large answers.

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

• SQL joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• CTE (Common Table Expression) is a temporary result set that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.

• Stored Procedures (SP) are precompiled SQL statements that are stored in the database an...read more

ADO.NET is a data access technology while Entity Framework is an ORM framework for data access in .NET applications.

• ADO.NET is a set of classes used to interact with data sources like databases directly.

• Entity Framework is an ORM framework that allows developers to work with data in terms of objects and classes.

• ADO.NET requires writing SQL queries manually, while Entity Framework allows querying data using LINQ.

• Entity Framework provides automatic generation of SQL queries bas...read more

Micro-frontend is an architectural style where a frontend application is broken down into smaller, independent 'micro-applications'.

• Each micro-frontend is responsible for a specific feature or functionality

• Micro-frontends can be developed, tested, and deployed independently

• They can communicate with each other through APIs or events

• Common frameworks for implementing micro-frontends include single-spa, Webpack Module Federation, and Module Federation Plugin

Enterprise architecture is a holistic approach to aligning an organization's business processes and IT infrastructure.

• It involves creating a blueprint of the organization's current and future state in terms of technology and processes.

• It helps in optimizing operations, reducing costs, and improving efficiency.

• Enterprise architecture frameworks like TOGAF and Zachman provide guidelines for creating and implementing architectures.

• Examples include defining standardized technolog...read more

I am an expert in various email marketing tools such as Mailchimp, HubSpot, and Constant Contact.

• Proficient in creating and managing email campaigns using Mailchimp, HubSpot, and Constant Contact

• Adept in designing visually appealing email templates and newsletters

• Experienced in analyzing email campaign performance and optimizing for better results

• Skilled in segmenting email lists and personalizing email content for targeted audiences

An array is a collection of similar data types stored in contiguous memory locations.

• Arrays can be of fixed size or dynamic size

• Elements in an array can be accessed using their index

• Example: int arr[5] = {1, 2, 3, 4, 5};

• The above array has 5 elements of type int

Tools for data extraction include web scrapers, APIs, and data mining software.

• Web scrapers like Scrapy and BeautifulSoup extract data from websites

• APIs like Google Maps API and Twitter API provide access to specific data

• Data mining software like RapidMiner and KNIME analyze large datasets

• OCR software like Tesseract can extract text from images

• Database management systems like MySQL and Oracle can extract data from databases