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GAQM CPEH-001 Exam - Topic 6 Question 128 Discussion

What port scanning method is the most reliable but also the most detectable?
B) Connect Scanning
A) Null Scanning
C) ICMP Scanning
D) Idlescan Scanning
E) Half Scanning
F) Verbose Scanning

GAQM CPEH-001 Exam - Topic 6 Question 128 Discussion

Actual exam question for GAQM's CPEH-001 exam
Question #: 128
Topic #: 6
[All CPEH-001 Questions]

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

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Suggested Answer: B

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.


by Rusty at Jun 20, 2026, 11:11 AM

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