Answer to Question #44766 in Math for Sujata Roy

Question

A DMA controller transfers 16-bit word to memory using cycle stealing. The words assembled from a device that transmits characters at a rate of 2400 characters per second. The CPU is fetching and executing instructions at an average rate of 1 million instructions per second.

By how much will the CPU be slow down because of DMA transfer when the
characters are represented with 8 bit ASCII?
(A) 0.0833% (B) 83% (C) 17% (D) 17.33%

How much more percent the CPU slows down when 32 –bits words are
transferred to memory using cycle stealing?
(A) 83% (B) 23% (C) 0.0833% (D) 17.33%