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What is the role of ACK messages in wireless Ethernet? The receiving station immediately acknowledges a successfully received frame. The sending station has to get

What is the role of ACK messages in wireless Ethernet?

The receiving station immediately acknowledges a successfully received frame.

The sending station has to get the attention of the receiving station.

The sending station has to reserve the airspace before transmitting.

The sending station has to wait a random amount before sending acknowledgement.

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