单选题Which of the following is TRUE about the ping -f command?（）A It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. B It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent in fast mode. C It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent and a backspace on returned in fast mode. D The command can only be run by root.
单选题
Which of the following is TRUE about the ping -f command?（）
A
It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line.
B
It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent in fast mode.
C
It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent and a backspace on returned in fast mode.
D
The command can only be run by root.
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