When Nmap performs a ping sweep, which of the following sets of requests does it send to the
target device?
A.
ICMP ECHO_REQUEST & TCP SYN
B.
ICMP ECHO_REQUEST & TCP ACK
C.
ICMP ECHO_REPLY & TFP RST
D.
ICMP ECHO_REPLY & TCP FIN
Explanation:
The default behavior of NMAP is to do both an ICMP ping sweep (the usual kind of
ping) and a TCP port 80 ACK ping sweep. If an admin is logging these this will be fairly
characteristic of NMAP.