If a firewall log reveals a high number of probes to ports that have no application services running on them, this could indicate __________. a. attackers are trying to determine if the ports and...

If a firewall log reveals a high number of probes to ports that have no application services running on them, this could indicate __________.

a. attackers are trying to determine if the ports and corresponding applications are

already in use

b. an attack from the internal network

c. an IP Map Protocol (IPMP) attack

d. suspicious outbound traffic