Chapter 2

A1: The five layers of the TCP/IP protocol suite are the following:

  • Physical layer

  • Data link layer

  • Internet (or IP) layer

  • Host-to-host layer

  • Application layer

The physical layer contains the protocols of the physical medium.

The data link layer contains the protocols that control the physical layer: How the medium is accessed and shared, how devices on the medium are identified, and how data is framed before being transmitted on the medium.

The internet layercontains the protocols that define the logical grouping of data links into an internetwork and the communication across that internetwork.

The host-to-host layer contains the protocols that define and control the logical, end-to-end paths across the internetwork.

The application layer ...

Get Routing TCP/IP, Volume I (CCIE Professional Development) now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial