Which method allows a workstation to ask for permission to transmit data?

Which method allows a workstation to ask for permission to transmit data?

• A. CSMA/CD
• B. CSMA/CA
• C. Token Ring
• D. Token Bus

Answer: (B)

The correct choice is the method known as CSMA/CA, which stands for Carrier Sense Multiple Access with Collision Avoidance. This protocol is specifically designed for wireless networks to help prevent data collisions. In this method, a workstation listens to the network to determine if it is clear before attempting to transmit data. If it detects that another device is currently transmitting, it will wait until the network is free. Additionally, CSMA/CA implements a request-to-send/clear-to-send (RTS/CTS) mechanism, where a device can ask for permission to send data, further reducing the chance of a collision. Understanding this process is crucial for managing how devices on a network communicate without interrupting each other, ensuring more efficient data transmission, particularly in systems where multiple devices may be trying to communicate simultaneously.

The correct choice is the method known as CSMA/CA, which stands for Carrier Sense Multiple Access with Collision Avoidance. This protocol is specifically designed for wireless networks to help prevent data collisions. In this method, a workstation listens to the network to determine if it is clear before attempting to transmit data. If it detects that another device is currently transmitting, it will wait until the network is free. Additionally, CSMA/CA implements a request-to-send/clear-to-send (RTS/CTS) mechanism, where a device can ask for permission to send data, further reducing the chance of a collision.

Understanding this process is crucial for managing how devices on a network communicate without interrupting each other, ensuring more efficient data transmission, particularly in systems where multiple devices may be trying to communicate simultaneously.