Here is the checklist that I have used to prepare.
24 hadoop interview questions
Tom White's Hadoop the Definitive Guide 3rd Ed,
Hadoop in Action Book
played with local-mode in Eclipse plus pseudo-mode with jar files. Tried lots of variations with a simple wordcount program:
Logging and counter techniques
list of HDFS commands
Hadoopexam pdf - chanakya
Hive exam pdf
Writable data types
External and internal table in Hive
Map side join vs reduce side join
Sample exam(15 questions) from Clodera website
Hive - Need to do lot of practise with the commands
Hbase - Highlevel
Zookeeper - Highlevel
PIG - - Need to do lot of practise with the commands
AVRO - High level
FLUME - High level
If you are a beginner, I would say initially go through the books(Hadoop in Action book and then the Tom White's Hadoop the Definitive Guide) inorder to get an idea about Hadoop. Once you become comfortable with the subject you can go through the sample exam links attached above. Then you can give another round of reading to the text and the above mentioned topics - you can find lot of Youtube videos related to each of these topics. 3-4 times of practice of these should give you most of what you need to pass the exam. For the rest, you should be comfortable with basic core Java coding along with various variations of the mapreduce jobs and their possible outcomes. And practise commands related to sqoop, hive, hbase and pig.
What type of the questions? multiple choice Qs but with number of correct answers you need to choose? I mean choose the best? choose two correct answers...
Yes they are multiple choice with min 1 ans to be selected. sometime they mention the number of ans to choose which can be more than 1 and ofcourse choose the best.
And for one question, How many choices it has? 4? 5? 6?
after your read these material carefully, do you think the Qs are hard? easy?
Its was quiet a balanced exam. They tested out both subject and programatic. Programatic was more challenging and you need to practice both mapreduce and the queries/commands/scripts to make it through
How long do you prepare for the exam?
I prepared for a month and half. It was not consistent though. But I would say 4-5 weeks of constant preperation for 1.5-2 hrs a day should be enough.
Again I say - Once you think are comfortable with subject focus more on coding and scripts/commands/sqls.
Hi Zach. Sorry for the delay in response. please see my comments inlined.