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Which access method is used by Ethernet?
CSMA/CD: Carrier Sense Multiple Access / Collision Detection.
What does the acronym CSMA CD stand for?
The acronym CSMA CD stands for Carrier Sense Multiple Access with Collision Detection. CSMA CD is a set of rules determining how network devices respond when two devices attempt to use a data channel simultaneously.
Which Ethernet standards supports csma CD?
10BaseT
Why csma CD not applicable in mobile ad hoc networks?
Because CSMA/CD does not prevent Hidden terminal problem. so it is onlly applicable in Wired networks.
What is the difference between csma CD and csma ca - 42k?
*** In CSMA/CD it detects that a collision take place and resend the frame that was send. On a wirless network losing bandwidth along with time to detect that a collision took place was not acceptable , so CSMA/CA was utilized. ** CSMA/CD can achieve above 70% efficiency under heavy loads compared to CSMA/CA that can only achieve up to 30% efficiency under heavy loads. CSMA/CA network: A network in which the medium access control protocol requires carrier sense and where a station always starts transmission by sending a jam signal; if there is no collision with jam signals from other stations, it begins sending data; otherwise, it stops transmission and then tries again later. CSMA/CD network: A bus network in which the medium access control protocol requires carrier sense and in which exception conditions caused by collision are resolved by retransmission
Which is an access method in which collision is entirely avoided?
Csma/cd
Describe one protocol used for Local Area Network?
IP, appletalk, token ring, CSMA/CD, CSMA/CA
What are three characteristics of CSMACD?
Devices listen to the media and transmit data only when they cannot detect another signal on the media. All devices on the media can hear all communications When a collision occurs, all devices stop transmitting for a randomly generated period of time.
Which is a drawback of the CSMA CD access method?
Collisions can decrease network performance.
Mechanisms used on Ethernet networks to control access to transmission medium?
Csma/cd
The truncated binary exponential back off algorithm?
This is the Algorithm use by CSMA/CD as a wait period to allow other devices on the network to access the media.
What is the access method for star topologies?
Most star topologies use CSMA/CD for a Local Area Network. WANs and MANs are different and use completely different access methods.
