John works as an Ethical Hacker for PassGuide Inc. He wants to find out the ports that are open in PassGuide’s server using a port scanner. However, he does not want to establish a full TCP connection. Which of the following scanning techniques will he use to accomplish this task?

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John works as an Ethical Hacker for PassGuide Inc. He wants to find out the ports that are open in PassGuide’s server using a port scanner. However, he does not want to establish a full TCP connection. Which of the following scanning techniques will he use to accomplish this task?
A . TCP SYN
B . TCP SYN/ACK
C . TCP FIN
D . Xmas tree

Answer: A

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