Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?

1. what are the biggest risks when using the public internet as a wide area network (wan) or transport for remote access to your organization’s it infrastructure?

In the film "epic 2015," epic is the name for:

Technician a says that if a valve is open when a piston rises to the very top of a cylinder, the piston may actually strike the valve head and cause serious engine damage. technician b says if the camshaft is located in the engine block, then the engine is called an overhead valve engine, ohv engine, or an in-block camshaft. who is right? a. b only b. both a and b c. a only d. neither a nor b