COMPUTER NETWORKING

WIRELESS NETWORKS AND MOBILE IP

WIRELESS NETWORKS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which Carrier Sense technology is used on wireless networks to reduce collisions?

A	CSMA/CD
B	802.3
C	802.11
D	CSMA/CA

Explanation:

Detailed explanation-1: -Carrier sense multiple access/collision avoidance (CSMA/CA) is a protocol for carrier transmission in 802.11 networks. It was developed to minimize the potential of a collision occurring when two or more stations send their signals over a data link layer.

Detailed explanation-2: -The physical characteristics of WiFi make it impossible and impractical for the CAMA/CD mechanism to be used. This is due to CSMA/CD’s nature of ‘listening’ if the medium is free before transmitting packets.

Detailed explanation-3: -It is used to prevent collision rather than collision detection on the shared channel. CSMA CA avoids wasted transmission of data over the channel. It is best suited for wireless transmission in a network. It avoids unnecessary data traffic on the network with the help of the RTS/ CTS extension.

Detailed explanation-4: -CSMA / CD is used in wired network. Whereas CSMA / CA is commonly used in wireless networks. CSMA / CD only reduces the recovery time. Whereas CSMA/ CA minimizes the possibility of collision.

There is 1 question to complete.