nmap -A -T4 192.168.1.2

nmap -sP -PR 192.168.0.0/24

Results:

...
Host 192.168.1.101 appears to be up.
MAC Address: 00:01:E3:68:7D:F2 (Siemens AG)
...

nmap -sS -P0 192.168.1.0/24 -p 80