Select the correct answer. Ali is creating a document on a system using his login credentials. His colleague needs to use his system to access documents. His colleague does so with his own credentials while Ali is still logged in. What type of OS allows this kind of operation? A. single-user/single-tasking B. single-user/multitasking C. multiuser/single-tasking D. multiuser/multitasking

What is estimated time of arrival (eta)? a device that measures the acceleration (the rate of change of velocity) of an item and is used to track truck speeds or taxi cab speeds a gps technology adventure game that posts the longitude and latitude location for an item on the internet for users to find a north/south measurement of position the time of day of an expected arrival at a certain destination and is typically used for navigation applications