To draw a circle, use the ___ method.

We use the #ifndef, #define, and #endif

a. to prevent multiple definitions of a class b. when we use separate files c. whenever we use a class d. none of the above e. A and B

Which of the following terms refers to broadening of a light pulse as it propagates through a fiber strand?

a. Pulse shaping b. Diffusion c. Absorption d. Dispersion