Question

How many levels are there in exception safety?

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked during an online interview.

I'd like to ask this question from Error Handling Alternatives in chapter Derived Classes, Templates & Exception Handling in C++ of C++

Answer 1

Correct answer is (c) 3

To explain: The three levels of exception safety are basic, strong and no throw.