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What port scanning method is the most reliable but also the most detectable?

What port scanning method is the most reliable but also the most detectable?

PrepAway - Latest Free Exam Questions & Answers

A.
Null Scanning

B.
Connect Scanning

C.
ICMP Scanning

D.
Idlescan Scanning

E.
Half Scanning

F.
Verbose Scanning

Explanation:
A TCP Connect scan,named after the Unix connect() system call is the most
accurate scanning method. If a port is open the operating system completes the TCP three-way
handshake,and the port scanner immediately closes the connection.


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