Direct memory access is used for high-speed I/O devices in order to avoid increasing the CPU’s execution load. A. How does the CPU interface with the device to coordinate the transfer? B. How does the CPU know when the memory operations are complete? C. The CPU is allowed to execute other programs while the DMA controller is transferring data. Does this process interfere with the execution of user programs? If so, describe what forms of interference are caused.

What are two of the most common reasons that peolpe who need mental health care do not access it?

1. technician a says horsepower information can be used by consumers to compare the power of different automobile engines. technician b says that manufacturers will often list the horsepower output of their engines in the online service information. who is right?

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.