what does assembly mean in c#

Question

i just read about the Public Access Modifier.

Its access levels are

1. Within the derived classes of that class available within the same assembly.

2. Outside the class within the same assembly.

3. Within the derived classes of that class available outside the assembly.

4. Outside the class outside the assembly.

What does assembly mean here?Can any one give any example

Answer 1

An assembly is a DLL or Exe file

Assembly (CLI)