Which of the following statements is true of wireless cellular networks? Check all of the boxes that apply. They operate on a grid pattern.

They must conform to IEEE 802.11 standards.

They search for signals to confirm that service is available.

They provide voice communications and Internet connectivity.

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.

The place where the extended axis of the earth would touch the celestial sphere is called the celestial

You have read about the beginnings of the internet and how it was created. what was the internet originally created to do? (select all that apply) share research. play games. communicate. share documents. sell toys