單項(xiàng)選擇題While monitoring a system using vmstat, which of the following options most likely indicates that the system is CPU bound?()

A. r is greater than 40
B. id is greater than 50
C. sum of id and wa equals 50
D. sum of us and sy equals 100


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2.單項(xiàng)選擇題In an iostat report, which of the following options best describes the value of % iowait?()

A. The amount of time taken to service an I/O interrupt
B. The percentage of time CPU(s) are waiting for page ins
C. The percentage of time the CPU9(s) are waiting on network
D. The percentage of time the CPU(s) are waiting for outstanding disk I/O requests

4.單項(xiàng)選擇題In an iostat report, which of the following options best describes the value of % idle?()

A. A representation of the equation (tps/kbps)*100
B. The percentage of time the disks are idle with no activity
C. The percentage of time the disks are idle with no outstanding CPU requests
D. The percentage of time the CPU is idle with no outstanding disk I/O requests

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