The letter D at the beginning of a function is identification in Excel that a ________ range will be used in the formula

One way to drop database objects in a script without throwing errors and cancelling the script if the objects don't exist is to

A. use a PL/SQL block to drop the objects B. use a PL/SQL block to drop the objects and use an IF statement to handle any errors that are thrown C. use a PL/SQL block to drop the objects and ignore any exceptions D. use a PL/SQL block to drop the objects and use a CASE structure to handle any errors that are thrown

Cable manufacturers use a two-number designator to define fiber-optic cables according to their _______________________ and ___________________ measurements.

Fill in the blank(s) with the appropriate word(s).