单选题A technician is attempting to use a command line prompt to continuously ping a remote server to check availability and reliability of the connection. Which of the following provides the ping command needed to continuously ping the system?（）Aping -aBping -fCping -rDping -t
单选题
A technician is attempting to use a command line prompt to continuously ping a remote server to check availability and reliability of the connection. Which of the following provides the ping command needed to continuously ping the system?（）
A
ping -a
B
ping -f
C
ping -r
D
ping -t
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