What is the method called when the entire frame is received and placed into the buffer, an error check is performed, and the frame is sent to the proper port for delivery?

The method referred to is known as store-and-forward. This process involves receiving the complete data frame and placing it into a temporary storage area, or buffer. Once the entire frame is in the buffer, an error check is performed to ensure the integrity of the data. If no errors are detected, the frame is then sent to the appropriate port for delivery. This approach helps in preventing corrupted frames from being forwarded, ultimately improving the reliability of the data transmission.

Store-and-forward is particularly advantageous in networking environments where reliable data transmission is paramount, as it can enhance data integrity and allows for error correction. This method contrasts with other approaches, such as cut-through switching, where the switch begins forwarding packets as soon as the destination address is read, potentially leading to the transmission of erroneous data if the frame turns out to be corrupted.