What is a LinkedList<T> in C#? Follow:

Short answer: LinkedList<T> is a doubly linked list collection in C#.

Explain a bit more

It stores elements as nodes, where each node contains the data and references to the previous and next nodes.

Example code

LinkedList<int> numbers = new LinkedList<int>(); numbers.AddLast(10); numbers.AddLast(20);

Real-world example (ShopNest)

In ShopNest, an order page loads products with List<Product> so you can Add items to the cart and access them by index. Use IEnumerable<T> when you only need to loop (for example, printing invoice lines).

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.