Compare a typical Distributed Replicated Block Device (DRBD) with MySQL Standard Replication using master-slave replication. Which two statements are correct?（）<br>A:Both technologies guarantee an identical copy of data on the secondary node<br>B:Only MySQL can maintain a time-delayed copy of data on the secondary node<br>C:Both technologies use the TCP/IP stack as their primary transmission medium<br>D:DRBD uses shared-disk technology

Compare a typical Distributed Replicated Block Device (DRBD) with MySQL Standard Replication using master-slave replication. Which two statements are correct?（）
A:Both technologies guarantee an identical copy of data on the secondary node
B:Only MySQL can maintain a time-delayed copy of data on the secondary node
C:Both technologies use the TCP/IP stack as their primary transmission medium
D:DRBD uses shared-disk technology

出自：Oracle认证

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