The string class member function ________ will return the number of characters in the string object.

A(n) ____________________ virtual network does not use the NIC in the virtual server and is generally used to prevent network traffic from reaching virtual machines.

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

The purpose of a ____ is to operate on the passed data and return, at most, one value directly back to the calling function.

A. function declarator B. prototype C. function body D. function header