4 IP addresses. The hub does not require an IP address but the 4 devices connected to the hub do.
5
Static addresses are usually used for devices that are not mobile and need to be connected to a DNS name. That would be routers, gateways, web servers, DNS servers, printers, email servers, etc.
for what hosts devices would you still need static addresses
10000
6
Hosts file
6
HOSTS files were used
yes
it is the collection of computer and devises connected togethere, and connected in the sane building or immediate area
A Network
A Network
ARP, or Address Resolution Protocol, defined by RFC 826.