COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

WIRED LANS ETHERNET PROTOCOL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When two or more devices try to send a message at the same time using the same transmission medium it is called a ____
A
Collision
B
Conflict
C
Delay
D
Backoff
Explanation: 

Detailed explanation-1: -A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another.

Detailed explanation-2: -CSMA/CD and CSMA/CA are the media access methods that govern how a device can transmit data to the network. CSMA/CD stands for Carrier Sense Multiple Access / Collision Detection. CSMA/CA stands for Carrier Sense Multiple Access/Collision Avoidance. Both methods are used in a single collision domain.

Detailed explanation-3: -With half-duplex (full-duplex will be described below) Ethernet, collisions occur when two or more devices attempt to send a frame at the same time. When frames collide, the frame must be retried, so each device delays (backs-off) a random amount of time and then retries.

Detailed explanation-4: -A network collision occurs when two devices attempt to transmit data on a shared circuit. In a shared circuit where multiple devices are listening, only a single device can transmit data at a single point in time which requires the rest of the devices to be listening to the transmission.

There is 1 question to complete.