w6 wed morning

192.2.7.121/7 IP address in IPv4
11000000.00000010.00000111.01111001 IP address in binary
11111110.00000000.00000000.00000000 Subnet mask in binary

11000000.00000000.00000000.00000000 AND gate IP address and Subnet mask - NID (Network ID)
192.0.0.0/7 NID in IPv4

Install a server 2012R2

ADDC (Active directory domain controler)
DNS (Domain name service)
DHCP (Dynamic host control process)
Hyper-v
hardware configuration
update
features
users
group
group polices
computers
shared folder

Virtual networks
Topologies
peer to peer
cli mode


Switch 1 192.168.20.3/28
Switch 2 192.168.30.3/28

Router 1 192.168.40.1
Router 2 192.168.40.2
NID 192.168.40.0/252
BA 192.168.40.3/252

HOP 192.168.30.0 255.255.255.252 192.168.40.2 (Switch 2 to Router 2)
HOP 192.168.20.0 255.255.255.252 192.168.40.1 (Switch 1 to Router 1)

Hybrid
Between switch, cat6 x-over cable

star
connect pcs to switch

Wifi (Wireless fidelity)
IEEE 802.11
802.11 a 5ghz 54Mbps
802.11 b 2.4ghz 2Mbps
802.11 g 2.4 + 5ghz 2.4 grater distance, 5 greater speed

Higher frequency don't penetrate