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.

Describe in pseudocode an algorithm that given an integer n and a linked list of elements increases the linked list by a factor of n by replacing each element in the original list with n copies of that element. for example, if l: [18, 7, 4, 24, 11] and n = 3 the resulting list should be l: [18, 18, 18, 7, 7, 7, 4, 4, 4, 24, 24, 24, 11, 11, 11]. if the value of n is less than or equal to 0, the list should be empty after the call. what’s the running time of your algorithm?

Which software would you use to create a print design? a. illustrator b. audacity c. reaper d. dreamweaver

Which operating system is a version of linux?