O'Reilly logo

CCIE Security Exam Certification Guide by Henry Benjamin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Ethernet Overview

Ethernet networks are based on a development made by Xerox, Digital, and Intel. The two versions of Ethernet are commonly referred to as Ethernet I and Ethernet II (or version 2).

Ethernet uses Carrier Sense Multiple Access Collision Detection (CSMA/CD) to transmit frames on the wire. In an Ethernet environment, all hosts can transmit as long as no other devices are transmitting. CSMA/CD is used to detect and warn other devices of any collisions, and colliding stations will use a back off algorithm and wait a random amount of time before trying again. Colliding devices send a jam signal to advise all stations that a collision has occurred. When a jam signal is sent (a jam signal is detected by all devices because the voltage ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required