The use of computer systems to distribute potentially harmful. Information. Is called. What

Idon understand these and need some ! ?

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

My mom and i are moving and we don’t have wifi for the next week, i want to know if using a using a hotspot with unlimited data is better than using regular wifi. i’m considering cost, speed, and data sacrifices.