The top-level domain is usually .com, .org, .net, and many more.
Answer and Explanation:
top level class can not be declare as private or protected. It is always public. If we declare a top level class as private then the compiler always complain that the private is not allowed and if we declare top level class as protected then compiler complain that modifier protection is not allowed here. so we can not declare top level class as private or protected
