Question

1.We decided to use a FIFO to create a communication channel between two processes. To do this, we need to use the following list of system calls. Write them out in the correct order.

• close
• mkfifo
• open
• read

1. 2.Our computer system has a small but fast cache which takes 4 ns to access. Let’s say if we use the cache, 10% of the time we experience a cache miss. When it misses, we need to go to the main memory, which takes 30 ns to access. What is the average time to access?

1. 3.Let’s say we changed the cache to be larger but slower. This time the cache takes 5 ns to access, but we now hit 95% of the time. What is the average time to access?

Answer 1

summary:

There are three questions to answer : first question I have answered and I also written explanation for the answer, the second and third questions are similar so that I have return the explanation for both questions once..

I hope it is useful to you and thank you...