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單項(xiàng)選擇題

When attempting to boot a PC, the POST process completes without error. The PC then displays,‘non system disk or disk error’. Which of the following would MOST likely cause the issue?（）

A. Out-of-date BIOS
B. Invalid motherboard jumper settings
C. Failing power supply
D. Floppy disk in the drive

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Which of the following switches in Windows can be used to ping a host until stopped?（）

A.-l
B.-a
C.-t
D.-f

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A technician installs a local web server which is not accessible from the network. Which of the following is the local IP address that the web server should be using on the loopback adapter?（）

A.127.0.0.1
B.172.31.146.1
C.192.168.1.1
D.10.1.1.1