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.
Token ring local area network (LAN) technology is a protocol which resides at the data link layer (DLL) of the OSI model.
Application Layer
Megaco/H.248 is an Application Layer protocol and works on TCP/UDP.
The Hyper Text Transfer Protocol (HTTP) works on Layer 7 on the Application layer of the OSI Model.
UDP or User Datagram Protocol works on the Transport Layer (layer 4) in the OSI model.
the sever works like the management of the Network's and for the security reasons
Router works in Network Layer of OSI model
The protocol responsible for directing data to its destination is the Internet Protocol (IP). IP handles addressing and routing, ensuring that packets of data are sent from the source to the appropriate destination across networks. It operates at the network layer of the OSI model and works in conjunction with other protocols, such as TCP or UDP, to facilitate reliable communication.
the sever works like the management of the Network's and for the security reasons
Stateful inspection works at Network Layer . Many Thanks, Chinmoy Roy
ftp i.e file transfer protocol,used to transfer a file from node to node FTP works at OSI layer 7, the Application layer