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單項選擇題

Because of system performance problems， a system administrator ran the iostat command. The following iostat output is provided：

Which of the following issues can be derived from the output？（）

A.The server is CPU bound.
B.The server has network problems.
C.The server is memory constrained.
D.The server needs the disk usage to be optimized.X

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單項選擇題

A system administrator ran the iostat command because of system performance problems. The following iostat output is provided：

Based on the output， which of the following is insufficient？（）

A.CPU
B.Memory
C.Paging space
D.Disk capacityX

單項選擇題

A system administrator is monitoring a system that has recently shown a decrease in performance. The administrator suspects there is an overload of traffic on a single Ethernet adapter. Which of the following commands is best to identify a possible overload of the Ethernet adapter？（）

A.ping
B.iostat
C.netstat
D.ifconfig