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What is the difference between Synchronous and Asynchronous updates?

  1. In synchronous processing, the program waits: control returns to the program only when the task has been completed
  2. In asynchronous processing, the program does not wait: the system returns control after merely logging the request for execution
  3. In asynchronous processing, the program waits: control returns to the program only when the task has been completed
  4. In synchronous processing, the program does not wait: the system returns control after merely logging the request for execution
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