Imagine you're creating an application for hosting images online. Describe the architecture and explain your choices.

Coding - Frequency of numbers in an array, string reversal, and many more scenario-based questions on below concepts. OOPS - interface, class & object, static, sealed, abstract, etc. Fundamental of C# - delegates, LINQ, generics, Reflection, etc .Net core- Middleware, Dependency injection in .Net core, attribute routing, application start process, etc Entity Framework, CORS Design pattern - Singleton, Repository, Factory REST SQL, Query plan, Performance