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Most networking media send data using in which data is represented by only two discrete states: 0s and 1s. a. digital signals b. contiguous signals c. ramp signals d. exponential signals

Peripherals are part of the main computer. true false

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.