Section 4.1 TCP/IP Model

What are some examples of the Internet layer?

IP, ICMP, ARP, RARP

Layer 2

Internet

Internet (Layer 2)

Packages data into IP datagrams. Routes IP datagrams across networks. Connectivity occurs externally.

Transport (Layer 3)

Provides communication session management between hosts. Defines level of services and status of connection used for transport.

Network Interface (Layer 1)

This determines the physical and electrical characteristics of TCP/IP model. Describes how to transmit bits across the network. Also, Determines how the interface uses network medium.

Layer 3

Transport

What layer does the Transport layer correspond to on the OSI Model.

Transport

Network Interface, Internet, Transport, Application

What are the TCP/IP layers?

Physical, Data Link

What layers does the Network Interface layer correspond to on the OSI Model.

TCP/IP Model

Also, known as the DOD Model. This is an alternative to the OSI Model. More relevant model for network designers since it's based on TCP/IP.

Layer 4

Application

Application (Layer 4)

Defines TCP/IP application protocols. Defines how programs interface with the transport layer service. Layer with which the user interacts.

What are some examples of the Network Interface layer?

Ethernet, Token Ring, FDDI, RS-232

What are some examples of the Application layer?

HTTP, TELNET, FTP, SNMP, DNS, SMTP, SSL, TLS

4

How many layers does the TCP/IP Model have.

What layer does the Internet layer correspond to on the OSI Model.

Network

Layer 1

Network Interface

What layers does the Application correspond to on the OSI Model.

Session, Presentation, Application

What are some examples of the Transport layer?

TCP, UDP, RTP