Application Layer 7
smtp(simple mail transfer protocol,),ftp,(file trasfer protocol),ip(nternet protocol).
Layer 7, Aplication
DNS is an application layer protocol. The application layer of the OSI model is the layer closest to the user and provides network services to the applications of the user. Examples of protocols that operate at the application layer are: DNS, FTP, TFTP, SNMP, TELNET, RLOGIN, SMTP, MIME, NFS, FINGER, BOOTP and SMB.
NTLM, LDAP, SMTP & RPC protocol
POP
1.application: e-mail application-layer protocol: SMTP [RFC 2821] 2.application: WEB application-layer protocol: HTTP [RFC 2616] 3.application: streaming multimedia application-layer protocol: HTTP (eg Youtobe), RTP [RFC 1889] 4.application:file transfer application-layer protocol: FTP [RFC 959] 5.application: remote terminal access application-layer protocol: Tenet [RFC 854]
HTTP Belongs to the Application layer. Other transfer protocols like POP,FTP,SMTP etc also belongs to this layer
SMTP Protocol
Simple Mail Transfer Protocol (SMTP)
SMTP = Simple Mail Transfer Protocol
Yes
SMTP is simple mail transport protocol. SNMP is simple network management protocol that is UDP based.