TELECOMMUNICATIONS SYSTEMS
COMMUNICATION WIRELESS COMPUTING DEVICES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
HTTP
|
|
|
Wi-Fi
|
|
|
TCP
|
|
|
IP
|
|
|
Ethernet
|
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: -For this reason, CSMA/CD works well for wired networks, however, in wireless networks, there is no way for the sender to detect collisions the same way CSMA/CD does since the sender is only able to transmit and receive packets on the medium but is not able to sense data traversing that medium.
Detailed explanation-3: -CD doesn’t work on a wireless network, because the antenna can only transmit or receive at any given time, so it cannot listen for a collision while it’s sending data. Instead, wireless networks use CSMA/CA (Collision Avoidance), which send an RTS signal (Ready to Send) before transmitting actual data.