A(n) ________ is an interface used to enter or modify data in a field or record

Answer the following questions true (T) or false (F)

1. A programmer must have the source code for libraries to extend them, even using inheritance. 2. If class D is derived from class B, we speak of D as the child class and B as the parent class.

The stretching of a received pulse is due to which of the following? (Select two.)

a. Multiple paths taken by the light waves b. Misaligned connectors c. Pulse dispersion d. OTDR testing