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BI 12: (a) In order to run the WordCount job on Amazon cloud, I exported it to Jar, and copied it to S3. I then ran it on AWS-EMR. Here: S3 = ?, AWS-EMR = ?. (b) According to this page, we can use AWS-EMR API to run MapReduce jobs. AWS-EMR API is ... BI 13: The seek time is around 10 ms and the transfer rate is 100 MB/s, to make the seek time 1% of the transfer time, we need to make the block size around 100 MB. (/S) BI 14: Cho bit mc ch ca cc bc sau lm g?