The purpose of the poll() and select() system calls is to perform which of the following functions?

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Question:The purpose of the poll() and select() system calls is to perform which of the following functions?

1.Watch a set of file descriptors to see which are ready

2.Frequently check email and other network services

3.Sample system process information for use by the top command

4.None of these

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  1. The purpose of the poll() and select() system calls is to perform which of the following functions?
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