What are three characteristics of the CSMA/CD process? (Choose three.)

The Carrier Sense Multiple Access with Collision Detection (CSMA/CD) is an access method used in Ethernet networks to control access to the network medium. Here are three characteristics of the CSMA/CD process:

1. After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. This is known as the backoff algorithm, where each device waits for a random period of time before attempting to retransmit, reducing the probability of a collision on retransmission.
2. All of the devices on a segment see data that passes on the network medium. In a CSMA/CD environment, when a device transmits data, all other devices on the same network segment can detect that data because they share the same medium.
3. A device listens and waits until the media is not busy before transmitting. This is the ‘carrier sense’ part of CSMA/CD, where a device checks to make sure the medium is free from traffic before it starts transmitting data.

The other statements are not characteristics of the CSMA/CD process:

• A jam signal is used to notify all devices that a collision has occurred, not that it has cleared.
• There is no concept of electronic tokens in CSMA/CD; this is a characteristic of another access method called Token Ring.
• While devices may have different priority levels in some network configurations, CSMA/CD itself does not inherently support priority levels for transmission. Priority levels are a part of different network protocols, such as those used in Quality of Service (QoS).