Which two are features of Hadoop’s rack topology?
A.
Configuration of rack awareness is accomplished using a configuration file. You cannot use a
rack topology script.
B.
Hadoop gives preference to intra-rack data transfer in order to conserve bandwidth
C.
Rack location is considered in the HDFS block placement policy
D.
HDFS is rack aware but MapReduce daemon are not
E.
Even for small clusters on a single rack, configuring rack awareness will improve performance
B & C are the correct answers.
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B,C
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B is most favorable ans if you need to select only one answers o.w B,C.
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I choose CE
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