A security engineer is attempting to map a company's internal network. The engineer enters in the following NMAP command: NMAP -n -sS -P0 -p 80 ... What type of scan is this?

A Quick scan in Nmap uses the -T4 -F flags to scan fewer ports at a faster timing template and does not correspond to the -sS flag used in this command.

An Intense scan uses flags such as -T4 -A -v to enable OS detection, version detection, script scanning, and traceroute, none of which appear in this command.

The -sS flag instructs Nmap to send SYN packets and, upon receiving a SYN-ACK, immediately reply with a RST to tear down the connection before it is fully established - a half-open technique that avoids creating a full session entry in many application-layer logs. The additional flags -n (skip DNS resolution) and -P0 (assume hosts are up, skip ping) further reduce the scan's footprint and make it harder to detect.

A Comprehensive scan would include a much broader flag set such as -A and full port range (-p-), which are absent from this command.