单项选择题

221.17.101.223/28 is an example of which kind of notation？（）

A.ARP
B.CIDR
C.DNS
D.Port Number

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单项选择题

用来指定命令对象的连接属性是（）

A.Connection
B.CommandType
C.ActiveConnection
D.Prepared

单项选择题

While installing a new PCI card the administrator touched the motherboard. While powering on the server, a series of beeps were emitted and the server did not POST.
Which of the following could be done to prevent this problem?（）

A. Use ESD equipment.
B. Verify correct voltages are being supplied.
C. Use a system board tester to check for compatibility issues.
D. Install compatible PCI cards

单项选择题

Which of the following archiving methods only backs up data that has changed since the previous full backup？（）

A. Snapshot
B. Incremental
C. Copy
D. Differential