单选题Which statement is true about a Smurf attack？（）AIt sends ping requests in segments of an invalid sizeBIt intercepts the third step in a TCP three-way handshake to hijack a sessionCIt sends ping requests to a subnet， requesting that devices on that subnet send ping replies to a targetsystemDIt uses Trojan horse applications to create a distributed collection of zombie computers， which can beused to launch a coordinated DDoS attack
单选题
Which statement is true about a Smurf attack？（）
A
It sends ping requests in segments of an invalid size
B
It intercepts the third step in a TCP three-way handshake to hijack a session
C
It sends ping requests to a subnet， requesting that devices on that subnet send ping replies to a targetsystem
D
It uses Trojan horse applications to create a distributed collection of zombie computers， which can beused to launch a coordinated DDoS attack
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