Five-tier network architecture

I. Five-tier networking architecturethe network architecture of the five-tier protocol includes the following five tiers from top to bottom:1. Application layer;2. Transport layer;3. Network layer;4. Data link layer;5. Physical layer.


two. The corresponding protocol and hardware for each layer

Name	The corresponding protocol	The corresponding hardware
Application Layer	FTP (File Transfer Protocol), TELNET (Remote terminal Protocol), HTTP (Hypertext Transfer Protocol), SMTP (Simple Mail Transfer Protocol), DHCP (Dynamic Host Configuration Protocol), SNMP (Simple Network Management Protocol)
Transport Layer	Tcp,udp	Quad switch, router working on layer fourth
Network layer	Ip,arp,icmp,rarp,akp,uucp	Routers, firewalls, layer three switches
Data Link Layer	Ppp,csma/cd	Network Bridge, Ethernet switch (two-layer switch), NIC (half working on the physical layer, half working at the data Link layer)
Physical Layer		modem, repeater, hub, twisted pair

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Five-tier network architecture