Final answer:
In C++11, an 'enum class' allows multiple enumerators with the same name within the same scope by ensuring enumerator names are local to the enum.
Step-by-step explanation:
In C++11, the new type of enum that can be used to have multiple enumerators with the same name within the same scope is an enum class. Unlike traditional enums where the enumerator names are placed in the enclosing scope, enum class (also referred to as a scoped enumeration) ensures that enumerator names are local to the enum and must be qualified with the enum type name. This prevents name collisions that could happen with traditional enums.