help with skill exam

manafu2006

i have some questions for my skills exam and i want to be sure that i responded correctly


1) what informations can be deducted from port scanning(2 answers):

a) OS version
b ) the users that are logged to the equipment
c) port status: closed/filtered/open


2)how does a closed TCP port responds to port scanning

a)with the flag FIN
b)flag RST
c)flag SYN/ACK
d)doesn't respond





Please help,
thank you

manafu2006

please correct my answers if they are wrong

1) a, c
2) c
3) c
4) d
5) a,d
6) voip, multicast, dhcp, dns
7) e
b
9) c
10) c
11) CBAC, TCP intercept
12) http, email, dhcp, ssh
13) c,d
14) udp
15) b