Question

Different networks with different protocols are connected by a device is called_____​

Answer 1

Answer:

switch

Explanation:

Different network with different protocols are connected by a device is called switch

Answer 2

Gateway device is used to connect two system, especially if the system use different protocols.
Unlike less advanced network hubs, a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the same data out of each of its ports. It works on OSI layer 2. Bridge: a device that connects multiple network segments. It works on OSI layers 1 and 2.
A default gateway serves as an access point or IP router that a networked computer uses to send information to a computer in another network or the internet. Default simply means that this gateway is used by default, unless an application specifies another gateway.
While forwarding an IP packet to another network, the gateway might or might not perform Network Address Translation. A gateway is an essential feature of most routers, although other devices (such as any PC or server) can function as a gateway.
Bridge[edit] “A device used to connect two separate Ethernet networks into one extended Ethernet. Bridges only forward packets between networks that are destined for the other network. Term used by Novell to denote a computer that accepts packets at the network layer and forward them to another network.”