单选题Which of the following functions does the "ifconfig en4 down" perform？（）ARemoves the en4 interfaceBRemoves the en4’s network routeCStops all traffic through the en4 interfaceDStops all traffic through the en4 and removes its network route from the routing table
单选题
Which of the following functions does the "ifconfig en4 down" perform？（）
A
Removes the en4 interface
B
Removes the en4’s network route
C
Stops all traffic through the en4 interface
D
Stops all traffic through the en4 and removes its network route from the routing table
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