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I want to know what is the node and host in the network in some books say that node is computer or router so this computer is a normal computer? And if was a router why called node in the network which I knew that host means (www) or (FTP) in gateway I don't understand what does it?

marked as duplicate by Ron Maupin Sep 13 '17 at 12:58

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  • Thank you for responding but gateway ??? – Mohamed Khaled Sep 13 '17 at 11:03

In addition to the linked answer above, a gateway is a router (therefore also a node) that is the next-hop address for hosts on a network subnet. Hosts generally don't have any routing information, so when they determine that a packet's destination address is not on the local subnet, they forward it to the gateway address, which usually is a router that can forward the packet. The router is a "gateway to the rest of the network."

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