10+ Udaan school of excellence Interview Questions and Answers

Check if a string of brackets is valid by ensuring every opening bracket has a corresponding closing bracket.

• Use a stack data structure to keep track of opening brackets

• Iterate through the string and push opening brackets onto the stack

• When a closing bracket is encountered, pop the top element from the stack and check if it matches the closing bracket

• If the stack is empty at the end of the iteration, the string is valid

Django models for school database with classes, students, and teachers.

• Create a School model with a name field

• Create a Class model with a foreign key to School and a primary teacher field

• Create a Student model with a foreign key to Class

• Use ForeignKey and OneToOneField relationships in Django models

Fetch all classes with more than 50 students using ORM query.

• Use ORM query to filter classes with student count greater than 50

• Join tables to get class information along with student count

• Optimize query for better performance

select_related and prefetch_related are query optimization techniques in Django to reduce the number of queries executed when accessing related objects.

• select_related is used to retrieve related objects in a single query using a SQL JOIN operation

• prefetch_related is used to retrieve related objects in separate queries to avoid duplicate data retrieval

• select_related is suitable for foreign key and one-to-one relationships, while prefetch_related is suitable for many-to-many an...read more

Page load in browser is the process of fetching and rendering a web page.

• Browser sends a request to the server for the web page

• Server processes the request and sends back the HTML, CSS, and JavaScript files

• Browser renders the content and executes the scripts to display the page

• Page load time can be affected by factors like server response time, network speed, and browser cache

Financial statements and analysis tools used in financial reporting and decision-making.

• Profit and Loss Statement (P&L): Shows a company's revenues, expenses, and profits over a specific period of time.

• Cash Flow Statement: Reports a company's sources and uses of cash during a specific period, showing how changes in balance sheet accounts and income affect cash and cash equivalents.

• Balance Sheet: Provides a snapshot of a company's financial position at a specific point in time...read more

The detailed process of searching for google.com involves DNS resolution, HTTP request, server response, and rendering the webpage.

• 1. User enters 'google.com' in the browser address bar.

• 2. Browser checks cache for DNS resolution, if not found, sends a DNS query to resolve the domain name to an IP address.

• 3. Browser sends an HTTP request to the resolved IP address for google.com.

• 4. Google's server processes the request, retrieves the webpage content, and sends it back in an HT...read more

Easebuzz is a payment gateway platform that enables businesses to accept online payments easily.

• Easebuzz offers a variety of payment options including credit/debit cards, net banking, UPI, and wallets.

• One of the products I liked the most from Easebuzz is their recurring payment feature, which allows businesses to set up automatic payments for subscription-based services.

• Another product I found useful is their payment link generator, which enables businesses to create and shar...read more

Easebuzz is a payment gateway platform that enables businesses to accept online payments easily.

• Payment gateway platform

• Facilitates online payments for businesses

• Offers easy integration for websites and apps

A balance sheet is a financial statement that provides a snapshot of a company's financial position at a specific point in time.

• It shows a company's assets, liabilities, and shareholders' equity.

• Assets are what the company owns, liabilities are what it owes, and shareholders' equity is the difference between the two.

• The balance sheet follows the accounting equation: Assets = Liabilities + Shareholders' Equity.

• It helps investors and analysts assess the financial health and sta...read more