Here is a series of memory address references given as word address: 1, 1, 4, 4, 8, 5, 20, 17, 19, 56, 9, 11, 4, 43, 5, 6, 9, 17, 32, 4, 22. Assuming a direct-mapped cache with 16 one-word blocks that is initially empty, label each memory reference in the list as a hit or miss and show the final contents of the cache (valid bit, tag and data) by filling the following two tables. Assume memory address is 6-bit long. What is the miss rate of the cache

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health? a. air quality data gathered by new instruments can be used to reduce exposure to pollutants. b. new technologies enable natural and human-made pollution sources to be located and monitored. c. air quality data gathered by new instruments can be used to predict trends in pollution over time. d. new technologies allow governments to make informed decisions about the regulation of pollution. (choose more than one)

One of your customers wants you to build a personal server that he can use in his home. one of his concerns is making sure he has at least one backup of their data stored on the server in the event that a disk fails. you have decided to back up his data using raid. since this server is for personal use only, the customer wants to keep costs down. therefore, he would like to keep the number of drives to a minimum. which of the following raid systems would best meet the customer's specifications? a. raid 0 b. raid 1 c. raid 5 d. raid 10

Match the sentence fragment in the first column with the appropriate ending in the second column. a little per favore?