HBase Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to HBase. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - The number of HF files, one column family in Habse can have is

A - Equal to number of columns in the column family

B - More than one

C - Only one

D - Only tow

Answer : B

Explanation

Onr column family can have multiple HF files associated with it.

Q 2 - The verison information of a record in a KeyValue instance is inspected using the method

A - getVersion()

B - getTimestamp()

C - getTime()

D - getVersioninfo()

Answer : B

Explanation

The getTimestamp() method is used to inspect the specific verison associated with a KeyValue Instance.

Answer : D

Explanation

Every row in a table has the same column families, although a row need not store data in all its families.

Answer : C

Explanation

As the tables are split into chunks and distributed across machines, there is no limit to how many columns they can hold.

Answer : A

Explanation

HBase stores its data on a single file system. It assumes all the RegionServers have access to that file system across the entire cluster.

Answer : B

Explanation

The toe predefined namespace in Hbase are – habse and default. Habse contains internal tables and default contains the tables which are not qualified with any namespace.

Q 7 - When a large amount of client requests are directed to a very few nodes in a cluster, it is known as

A - Latency

B - Bottleneck

C - Hotspotting

D - Redundancy

Answer : C

Explanation

many client requests landing in only a few nodes is called Hotspotting.

Q 8 - A coprocessor is executed when an event occurs. This type of coprocessor is known as

A - Observer

B - Listener

C - Master

D - Event handler

Answer : A

Explanation

The observer type of coprocessor is executed when an event occurs.

Q 9 - The Hfile contains variable number of blocks. One fixed blocks in it is the block named file info block and the other one is

A - Trailer block

B - Index block

C - Data block

D - Meta blocks

Answer : A

Explanation

in an Hfile only the file infor block and trailer blocks are fixed. All others are optional.

Q 10 - To see all the tables presen tin a user space in Hbase the command used is

A - Show

B - List

C - Select

D - Describe

Answer : B

Explanation

The list command displays all the tables present in the user space in Hbase


hbase_questions_answers.htm

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