Quick Answer: Which Layer Of The OSI Model Does Telnet Operate At?

What layer is DNS?

Application LayerIn OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7).

DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit “below” HTTP in the OSI stack.

DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP..

What layer is FTP?

application layerFile Transfer Protocol(FTP) is an application layer protocol which moves files between local and remote file systems. It runs on the top of TCP, like HTTP. To transfer a file, 2 TCP connections are used by FTP in parallel: control connection and data connection.

What is OSI layer protocol?

The Open Systems Interconnection (OSI) model describes seven layers that computer systems use to communicate over a network. It was the first standard model for network communications, adopted by all major computer and telecommunication companies in the early 1980s.

What layer of the OSI model is Telnet?

layer 7Telnet is an application for connecting to a command line and operates at OSI layer 7, the Application Layer, with other application protocols like smtp for mail transport agents, http for web pages and web services, or ssh for _securely_ connecting to the command line of a server.

What layer of the OSI model does SNMP operate at?

application layerProtocol details. SNMP operates in the application layer of the Internet protocol suite. All SNMP messages are transported via User Datagram Protocol (UDP).

Which protocol works on which layer?

IP (Internet Protocol) – works at the network layer. It handles addressing, packet-switching, route selection and error control for communication. TCP (Transmission Control Protocol) – the Internet protocol’s main transport layer protocol.

What layer is SMTP?

application layerSMTP is part of the application layer of the TCP/IP protocol. Using a process called “store and forward,” SMTP moves your email on and across networks. It works closely with something called the Mail Transfer Agent (MTA) to send your communication to the right computer and email inbox.

What layer is UDP?

transport-layerUser Datagram Protocol (UDP) UDP is also a transport-layer protocol and is an alternative to TCP. It provides an unreliable datagram connection between applications.

What layer is TCP on?

TransportTCP/IP Protocol Architecture ModelOSI Ref. Layer No.OSI Layer EquivalentTCP/IP Protocol Examples5,6,7Application, session, presentationNFS, NIS+, DNS, telnet , ftp , rlogin , rsh , rcp , RIP, RDISC, SNMP, and others4TransportTCP, UDP3NetworkIP, ARP, ICMP2Data linkPPP, IEEE 802.21 more row


It is an application layer protocol in the OSI model framework. Typically, the SNMP protocol is implemented using the User Datagram Protocol (UDP). UDP is a connectionless protocol that works like the Transmission Control Protocol (TCP) but assumes that error-checking and recovery services are not required.

What layer of the OSI model does ARP operate at?

ARP works between network layers 2 and 3 of the Open Systems Interconnection model (OSI model). The MAC address exists on layer 2 of the OSI model, the data link layer, while the IP address exists on layer 3, the network layer.

Is ICMP a Layer 3?

So ICMP processing can be viewed as occurring parallel to, or as part of, IP processing. Therefore, in the topic on TCP/IP-based layered network, ICMP is shown as a layer 3 protocol. ICMP is probably most well known as the message protocol used for the command.

What OSI layer is BGP?

Layer 4BGP is a Layer 4 protocol that sits on top of TCP.

What OSI layer is IP?

Network LayerTCP and UDP port numbers work at Layer 4, while IP addresses work at Layer 3, the Network Layer.

Which OSI layer is most important?

Network LayerLayer 3, the Network Layer This is the most important layer of the OSI model, which performs real time processing and transfers data from nodes to nodes.