When an organization splits naming zones, the names of its hosts that are only accessible from an intranet are hidden from the internet. which of the following best describes why this is done? a. to prevent attackers from accessing servers b. to prevent the manipulation of the hosts file c. to avoid providing attackers with valuable information that can be used to prepare for an attack d. to avoid providing attackers with information needed for cyber squatting.

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.