The answer is "networks allow computer to connect quickly and to share data or equipment". This is true because with a commuter network you can instantly share files to all the other computer by putting them of the network file storage center. This also allows multiple pieces of equipment to be used to complete one task that would usually take longer if a single computer did it
Not sure if your asking what certain application or the definition. But the definition: A security practice that blocks or restricts unauthorized applications from executing in ways that put data at risk.
When you do not understand what another boater intends to do, you are required to communicate this to the boater by sounding five or more short and rapid blasts. A short blast means a blast that takes about one second. The two vessel must stop or slow down until they clearly understand each other intent.