Meta Description: Master your System Design interview with this comprehensive guide of 40 essential questions and detailed answers. From Load Balancers to Distributed Transactions, we cover the scalability concepts you need to crack interviews at Google, Amazon, Meta, and more. Introduction System design interviews are the gatekeepers to senior engineering roles at FAANG and other top-tier tech companies. They don't just test your coding skills; they test your ability to build scalable, reliable, and maintainable systems under constraint. In this guide, we break down 40 critical system design questions . We start with the core concepts and move into advanced architectural challenges, complete with real-world examples like designing Uber, Netflix, and TinyURL. Part 1: Core Concepts & Fundamentals Before diving into complex architectures, you must master the building blocks. 1. API Gateway vs. Load Balancer: What’s the difference? Answer: While both manage traffic, they serve d...
.Net Core & CLR 1. What is .NET, and how does the CLR work? .NET is a developer platform from Microsoft providing a runtime (CLR), base class libraries, and tools to build apps for web, desktop, mobile, cloud, and more. The CLR (Common Language Runtime) manages code execution (MSIL), memory allocation, garbage collection, type safety, and exception handling, enabling multiple languages (C#, F#, VB) to run on the same runtime. 2. What are assemblies in .NET? An assembly is the basic unit of deployment and versioning, typically a DLL or EXE containing IL code, metadata, and resources. Assemblies can be private (application-local) or shared (in the Global Assembly Cache, typically strong-named). [1] 3. Difference between value types and reference types. Value types (struct, int, bool) are allocated typically on the stack or inline in objects, store the actual data, and are copied by value. Reference types (class, array, string) live on the heap, variables store reference...