Software Technologist 2 Interview Questions and Answers

Creating a program to generate a chart from Excel table data

• Use a programming language that has libraries for reading Excel files, such as Python with pandas

• Parse the data from the Excel table and plot it using a charting library like Matplotlib or Plotly

• Handle any errors or missing data in the Excel table gracefully

• Allow for customization of the chart's appearance and labels based on user input

Questions on OOPS, design patterns, and TPL with a parking lot design problem.

• To communicate between two threads, we can use synchronization primitives like locks, semaphores, or monitors.

• For designing a parking lot, we need to consider factors like the number of parking spots, types of vehicles, and payment methods.

• Design patterns are reusable solutions to common software design problems, like the Singleton pattern or the Observer pattern.

• TPL (Task Parallel Library) is a .NE...read more

Basic concepts of .NET include Common Language Runtime, Framework Class Library, and Intermediate Language.

• Common Language Runtime (CLR) provides environment for executing .NET programs

• Framework Class Library (FCL) provides reusable code for common programming tasks

• Intermediate Language (IL) is the code generated by the compiler and executed by the CLR

• Assemblies are the building blocks of .NET applications, containing IL code and metadata

Design a URL shortener system to generate short URLs for long URLs.

• Use a unique identifier for each long URL to generate a short URL.

• Implement a mapping system to map short URLs to long URLs.

• Consider using a hashing algorithm to generate short URLs.

• Include a database to store mappings of short URLs to long URLs.

• Implement a redirect system to redirect short URLs to their corresponding long URLs.

OOAD focuses on object-oriented design principles to create scalable and maintainable software systems.

• Encapsulation: Hiding internal state, e.g., using private variables in a class.

• Inheritance: Creating a new class from an existing one, e.g., a 'Dog' class inheriting from an 'Animal' class.

• Polymorphism: Allowing methods to do different things based on the object, e.g., a 'draw' method for different shapes.

• Single Responsibility Principle: A class should have one reason to cha...read more