smartData Enterprises Interview Questions and Answers

The event loop in Node.js manages asynchronous operations, allowing non-blocking execution of code.

• The event loop continuously checks the call stack and the task queue.

• When the call stack is empty, the event loop takes the first task from the queue and pushes it to the stack.

• Node.js uses a single-threaded model, but it can handle multiple operations concurrently through callbacks, promises, and async/await.

• Example: A f...read more

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

• Encapsulation helps in hiding the internal state of an object and only exposing the necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation promotes code reusability and reduces complexity by organizing related data and methods together.

• Examp...read more

Polymorphism is the ability of a single function or method to operate on different data types.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example of compile-time polymorphism: function overloading in C#.

• Example of runtime polymorphism: method overriding in Java.

CTE stands for Common Table Expressions, which are temporary result sets that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.

• CTEs are defined using the WITH keyword in SQL.

• They can improve readability and performance of complex queries.

• CTEs are commonly used for recursive queries or when a subquery needs to be referenced multiple times.

Angular is a popular front-end framework for building web applications.

• Angular is currently on version 12, with regular updates and new features being released.

• Each new version of Angular brings improvements in performance, security, and developer experience.

• Developers can check the latest version of Angular on the official website or through package managers like npm.

Stored procedures in SQL are precompiled SQL statements that can be saved and reused.

• Create a new stored procedure using the CREATE PROCEDURE statement

• Define the input parameters and output parameters for the stored procedure

• Write the SQL code inside the stored procedure

• Execute the stored procedure using the EXECUTE statement

Accounting standards are guidelines for financial reporting, ensuring consistency and transparency in financial statements.

• Accounting standards provide a framework for preparing financial statements, ensuring consistency across organizations.

• Generally Accepted Accounting Principles (GAAP) are a set of rules and guidelines used in the U.S. for financial reporting.

• Key principles of GAAP include: 1) Consistency - using th...read more

Financial modeling and analytics help in decision-making, forecasting, and assessing financial performance across various scenarios.

• Budgeting: Create detailed budgets to allocate resources effectively, e.g., annual operating budgets for departments.

• Forecasting: Use historical data to predict future revenues and expenses, such as projecting sales growth based on past trends.

• Valuation: Assess the value of investments or ...read more

GAAP are standardized guidelines for financial accounting and reporting in the U.S., ensuring consistency and transparency.

• GAAP stands for Generally Accepted Accounting Principles, a framework for financial reporting.

• It includes standards set by the Financial Accounting Standards Board (FASB).

• Key principles include consistency, relevance, reliability, and comparability.

• Examples of GAAP standards include revenue recogni...read more

Financial modeling complements accounting analysis by forecasting financial performance and assessing business decisions.

• Financial models help in projecting future revenues and expenses based on historical accounting data.

• For example, a company can use a financial model to estimate the impact of a new product launch on overall profitability.

• Accounting analysis provides the necessary historical data that feeds into fina...read more