The network layer (Internet Layer in TCP/IP model) is the second layer of the TCP/IP model. IP (Internet Protocol), ARP (Address Resolution Protocol), RARP (Reverse Address Resolution Protocol), ICMP (Internet Control Message Protocol) and IGMP (Internet Group Management Protocol) are the protocols at this layer. http://www.omnisecu.com/tcpip/internet-layer.htm
Yes.
IP (internet protocol)
Transmission Control Protocol Internet Protocol ... See the website link below
Telnet
SNMP
IPX/SPX
DHCP is a layer-4 protocol, most commonly transported over UDP. UDP port number 67 is the destination port of a server, and UDP port number 68 is used by the client
What is the purpose of the TCP/IP Network Access layer
DNS is Domain name system for short . Domain name system maps a name to an address. Protocol that relies upon DNS is TCP/IP .tcpip protocol
File Transfer Protocol
Protocol architecture or TCP/IP protocol architecture also referred to as the TCP/IP protocol suite is a simple fundamental underlying design which obeys a set of rules and conventions in which communication tasks are to be performed. The communication tasks of the protocol architecture are organized into five relatively independent layers: * Physical * Network Access Layer * Internet layer * Host-to-host, or transport layer * Application Layer In my research to this question it was interested to find out that there were some who consider the protocol architecture to be comprised of only four relative independent layers which are: * Network Access Layer * Internet layer * Host-to-host, or transport layer * Application Layer More information for each layer can be found at: http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/cnet/cnbb_tcp_kscb.mspx?mfr=true http://www.unix.org.ua/orelly/networking/tcpip/ch01_03.htm