CitiusTech Interview Questions, Process, and Tips

Design patterns are reusable solutions to common problems in software design.

• Design patterns help in creating maintainable and scalable code.

• Examples include Singleton, Factory, Observer, and Strategy patterns.

• Singleton pattern ensures a class has only one instance.

• Factory pattern creates objects without specifying the exact class.

• Observer pattern defines a one-to-many dependency between objects.

• Strategy pattern define...read more

React Native is a framework for building mobile applications using JavaScript and React.

• Allows developers to write code once and deploy it on both iOS and Android platforms

• Utilizes native components for better performance and user experience

• Supports hot reloading for faster development iterations

useEffect is a hook in React that allows functional components to perform side effects.

• useEffect is used to perform side effects in functional components

• It runs after every render by default

• It can be used to fetch data, subscribe to events, update the DOM, etc.

• It can take a second argument which is an array of dependencies to control when the effect runs

In my last project, we followed the MVC design pattern.

• Model-View-Controller pattern separates data, presentation, and user interaction

• Model represents data, View displays data, Controller handles user input and updates model

• Example: Using AngularJS for front-end (View), Node.js for back-end (Controller), and MongoDB for database (Model)

Yes, I am comfortable with UK time as I have experience working with teams in different time zones.

• Have experience working with teams in different time zones

• Flexible with working hours to accommodate UK time

• Comfortable using tools like Slack or email to communicate asynchronously

Display in Databricks is used to visualize data in a tabular format or as charts/graphs.

• Display function is used to show data in a tabular format in Databricks notebooks.

• It can also be used to create visualizations like charts and graphs.

• Display can be customized with different options like title, labels, and chart types.

To create a workflow in Databricks, use Databricks Jobs or Databricks Notebooks with scheduling capabilities.

• Use Databricks Jobs to create and schedule workflows in Databricks.

• Utilize Databricks Notebooks to define the workflow steps and dependencies.

• Leverage Databricks Jobs API for programmatic workflow creation and management.

• Use Databricks Jobs UI to visually design and schedule workflows.

• Integrate with Databricks D

I have 5 years of real-time experience working on high-traffic web applications.

• Developed real-time chat feature using WebSockets for instant messaging

• Optimized database queries to handle real-time data updates efficiently

• Implemented real-time analytics dashboard for monitoring user activity

• Worked on real-time bidding system for online advertising platform

Use a subquery to find the second highest salary in a table.

• Use a subquery to select the maximum salary from the table.

• Then use another subquery to select the maximum salary that is less than the maximum salary found in the first subquery.