Hortonworks HDPCD Quiz 2 Topic 2 Questions 6-10

Question: 1

Given the following Pig command:

logevents = LOAD 'input/my.log' AS (date:chararray, levehstring, code:int, message:string);

Which one of the following statements is true?

AThe logevents relation represents the data from the my.log file, using a comma as the parsing delimiter

BThe logevents relation represents the data from the my.log file, using a tab as the parsing delimiter

CThe first field of logevents must be a properly-formatted date string or table return an error

DThe statement is not a valid Pig command

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Question: 2

Consider the following two relations, A and B.

q2_HDPCD

Which Pig statement combines A by its first field and B by its second field?

AC = DOIN B BY a1, A by b2;

BC = JOIN A by al, B by b2;

CC = JOIN A a1, B b2;

DC = JOIN A SO, B $1;

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Question: 3

Given the following Pig command:

logevents = LOAD 'input/my.log' AS (date:chararray, levehstring, code:int, message:string);

Which one of the following statements is true?

AThe logevents relation represents the data from the my.log file, using a comma as the parsing delimiter

BThe logevents relation represents the data from the my.log file, using a tab as the parsing delimiter

CThe first field of logevents must be a properly-formatted date string or table return an error

DThe statement is not a valid Pig command

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Question: 4

What does the following WebHDFS command do?

Curl -1 -L ''http://host:port/webhdfs/v1/foo/bar?op=OPEN''

AMake a directory /foo/bar

BRead a file /foo/bar

CList a directory /foo

DDelete a directory /foo/bar

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Question: 5

You need to move a file titled ''weblogs'' into HDFS. When you try to copy the file, you can't. You know you have ample space on your DataNodes. Which action should you take to relieve this situation and store more files in HDFS?

AIncrease the block size on all current files in HDFS.

BIncrease the block size on your remaining files.

CDecrease the block size on your remaining files.

DIncrease the amount of memory for the NameNode.

EIncrease the number of disks (or size) for the NameNode.

FDecrease the block size on all current files in HDFS.

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Hortonworks HDPCD Quiz:2 Topic:2 Questions:6-10