Final answer:
The protection mechanism employed by the 802.11g MAC layer is called Frame Aggregation. Frame Aggregation allows multiple smaller frames to be combined into a single larger frame, reducing the overhead of the MAC layer.
Step-by-step explanation:
The protection mechanism employed by the 802.11g MAC layer that transmits a frame with a destination MAC address of the same station that is transmitting the frame is called Frame Aggregation.
Frame Aggregation allows multiple smaller frames to be combined into a single larger frame, reducing the overhead of the MAC layer. This process is known as aggregating. By aggregating frames, the destination MAC address remains the same as the transmitting station's MAC address.
For example, if Station A wants to transmit three small frames to Station B simultaneously, it can combine them into a single aggregated frame and transmit it with Station B's MAC address as the destination address even though the source MAC address is still from Station A.
The 802.11g MAC layer uses the RTS/CTS mechanism to prevent frame collisions by having the transmitting station send an RTS which prompts an access point to respond with a CTS, instructing other stations to wait.
The protection mechanism employed by the 802.11g MAC layer that transmits a frame with a destination MAC address of the same station that is transmitting the frame is known as the RTS/CTS mechanism or Request to Send/Clear to Send. This protocol is used to reduce frame collisions over a wireless network (WLAN). The RTS message is sent by a station to the access point, requesting permission to transmit a data frame. The access point then sends a CTS frame to all stations within the network to inform them that the requesting station is about to transmit data, effectively silencing other stations and preventing collision.