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Application Layer

Jun 28,2009 by alperen

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The Application layer is the uppermost layer of the OSI Model. This layer handles high-level protocols such as HTTP, FTP, and SMTP. The Application layer uses these protocols to communicate with the application on the destination system. In addition, this layer handles flow control and error recovery.

Table 1.1 lists the different protocols running on each layer of the OSI model.

Table 1.1 : Protocols Used on OSI Layers
Layer	Standards/Protocols/Applications
Application	DNS
	FTP and TFTP
	BOOTP
	SNMP and SMTP
	MIME
	NFS
	FINGER
	TELNET
	NCP
	APPC
	AFP
	SMB
Presentation	PICT
	TIFF
	MIDI
	MPEG
Session	NetBIOS
	NFS
	RPC
	Mail Slots
	DNA SCP
	Names Pipes
Transport	TCP
	SP
	NetBIOS/NetBEUI
	ATP
	ARP, RARP
	NWLink
Network	IGMP
	IPX
	NetBEUI
	OSI
	DDP
	IP
	ARP
	RARP
	ICMP
	RIP
	OSFP
	IGMP
	DECnet
	X.25
Data-link	HDLC
	SDLC
	LAPB
	PPP
	ISDN
	SLIP
Physical	IEEE 802
	IEEE 802.2
	EIA/TIA-232
	EIA-530
	ISDN
	RS232
	ATM

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