There is no "best" book on any technical subject. It depends on your background of knowledge, whether you want an overview or detailed understanding, and for TCP/IP it usually takes a series of books to completely describe it.
tcpip version 4 is 32 bit where as tcpip v6 is 128bit tcpip 6 can accomadate blillion of bliions ip addresses
INTERNET
Yes.
ipconfig
The comand is: netstat
tcp/ip is good....
IP Datagram
1::1
IPX/SPX
Routing
you tell me
SNMP