单选题Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server？（）Adenial of serviceBbrute forceCreconnaissanceDTrojan horse
单选题
Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server？（）
A
denial of service
B
brute force
C
reconnaissance
D
Trojan horse
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