The monitoring platform provides multiple functional items to ensure reliable transmission of messages, which are used to ensure business continuity and availability when the network condition is poor. Which of the following business features is used?

The monitoring platform provides multiple functional items to ensure reliable transmission of messages, which are used to ensure business continuity and availability when the network condition is poor. Which of the following business features is used?
A .  Picture and video backup
B .  Reliable transmission
C .  Encryption technology
D .  Digital watermark

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Answer: B