An Intranet is not necessarily connected to the Internet. A company would set up an Intranet for distribution of information within the company. One million cycles per second. It is based on the hertz, a unit of frequency that equals one cycle per second. A central processor's speed is defined by the number of cycles per second at which it runs.
Most instructions require more than one clock cycle to complete.
A CPU must be used at its rated clock cycle. Sometimes a manufacturer may run a CPU at a higher speed than it is rated for. This is not an accepted practice and may cause serious problems. Also, different parts of the machine run at different speeds. A network topology shows the hosts and the links comprising the network.