MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Carrier-sense multiple access with collision avoidance (CSMA/CA) in computer networking, is a network multiple access method in which carrier sensing is used, but nodes attempt to avoid collisions by beginning transmission only after the channel is sensed to be “idle".

Detailed explanation-2: -Ethernet uses Carrier Sense Multiple Access/ Collision Detect (CSMA/CD) as its method of allowing devices to “take turns” using the signal carrier line. When a device wants to transmit, it checks the signal level of the line to determine whether someone else is already using it.

Detailed explanation-3: -CSMA/CD stands for Carrier Sense Multiple Access/Collision Detection, with collision detection being an extension of the CSMA protocol. This creates a procedure that regulates how communication must take place in a network with a shared transmission medium.

Detailed explanation-4: -On Ethernet using shared media, collisions are resolved using carrier-sense multiple access with collision detection (CSMA/CD) in which the competing packets are discarded and re-sent one at a time.

Detailed explanation-5: -Because Ethernet interfaces listen to the media while they are transmitting, they can identify the presence of others through collision detection. If a collision occurs, the transmitting device waits for a small, random amount of time before retransmitting. This function is known as the back off delay.