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Answer: Synchronization
Explanation:
In communication of messages between processes we have a mechanism called as the interprocess communication (IPC) using which it is required to achieve synchronization between the process. These synchronization helps to prevent collision of the processes for the shared resources. Examples can be of mechanism of producer consumer problem .
Answer:
This is usually just a small glitch that happens sometimes when you are seeing an ad and wanting to skip. Simple fixes to this problem include refreshing the browser or closing the application that you are in. This also would happen to me but following this fix should help with the problem.