W4 wed afternoon

Electronic gates

AND
00 0
01 0
10 0
11 1

OR
00 0
01 1
10 1
11 1

NOT
0 1
1 0

Logic
1 = 5 volt
0 = 0 volt


192.168.31.2/24 : IP
11000000.10101000.00011111.00000010 : IP
11111111.11111111.11111111.00000000 : subnet mask (By AND gate)

11000000.10101000.00011111.00000000 : NID (Network ID)
192.168.31.0/24 : NID (Network ID)


192.168.31.72/24
11111111.11111111.11111111.000000 : subnet mask


192.168.31.72/27 : IP
11000000.1010100.00011111.01001000 : IP
11111111.11111111.11111111.11100000  : subnet mask (By AND gate)

11000000.1010100.00011111.01000000 : NID (Network ID)
192.168.31.64/27 : NID (Network ID)


AD DC (Active directory domain controller)
like old-style castle. via gateway

DNS (Domain name server)
we can't use .com or .gov
we use .local in LAN.

DHCP (dynamic host control protocol)


Installing server and add user, user group


System info - i7 2600, 16GB RAM