switch,hub.
A Hub or a Switch
Hubs and Switches
Hosts, as related to computer networking are computers that have complete two-way access to other computers across the Internet.
They can; that is the usual function of a switch.
DHCPDHCP
Authentication services are used to determine infusers are who they claim to be and are allowed to access what they are trying to access. The purpose of authentication is to protect devices, hosts, and services of a network. Authentication ensures the identity of the entity wanting access. Authentication is the process of determining if a user or identity is who they claim to be. The main goal of authentication is security, authentication is one of the first lines of defense in networking.
it is the collection of computer and devises connected togethere, and connected in the sane building or immediate area
Data Link Layer
Hosts need a suitable environment, access to resources like food and water, protection from predators, and the ability to reproduce in order to survive.
address translation
Address Translation.
check for an entry defining google.com in your hosts file and remove it if it's there c:\windows\system32\drivers\etc\hosts