Home » Which Nmap scan is does not completely open a TCP connection? Cyber Security & Cyber Crime MCQs Which Nmap scan is does not completely open a TCP connection? April 21, 2022 39 Views Q. Which Nmap scan is does not completely open a TCP connection? A. SYN stealth scan B. TCP connect C. XMAS tree scan D. ACK scan Answer: SYN stealth scan