FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Which one of the following event is not possible in wireless LAN? Explanation: Collision detection is not possible in wireless LAN with no extensions. Collision detection techniques for multiple access like CSMA/CD are used to detect collisions in Wireless LANs.

Detailed explanation-2: -Wireless transceivers can’t send and receive on the same channel at the same time, so they can’t detect collisions. This is due to the fact that there’s an incredible difference between send power (generally around 100mw) and receive sensitivity (commonly around 0.01 to 0.0001mw).

Detailed explanation-3: -In wireless, we don’t have the luxury of detecting collisions and resending packets because there’s no way to detect a collision over the air. Instead, WLANs have to make absolutely sure there is no collision. To do so, only one device in the RF region can transmit at any given time.

Detailed explanation-4: -Which one of the following event is not possible in wireless LAN. a)collision detectionb)acknowledgement of data framesc)multi-mode data transmissiond)none of the mentionedCorrect answer is option ‘A’.

Detailed explanation-5: -In the face of the strong outgoing signal, it is impractical to detect the incoming signal which is operating in the same frequency spectrum and is massively weaker. This basically rules out collision detection as an approach for wireless systems.