!! On Router 

en
conf t

ip dhcp pool NG
 network 192.168.1.0 255.255.255.0
 default-router 192.168.1.1
 dns-server 8.8.8.8
exit

ip dhcp excluded-address 192.168.1.1 192.168.1.10

!! Now start the PCs and check the DHCP IP.

Win -> ipconfig /all
Linux -> ifconfig


In the router -> do show ip dhcp binding