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Welcome to the ZooKeeper,Sqoop and Cassandra MCQs Page

Dive deep into the fascinating world of ZooKeeper,Sqoop and Cassandra with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of ZooKeeper,Sqoop and Cassandra, a crucial aspect of Hadoop. In this section, you will encounter a diverse range of MCQs that cover various aspects of ZooKeeper,Sqoop and Cassandra, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Hadoop.

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Check out the MCQs below to embark on an enriching journey through ZooKeeper,Sqoop and Cassandra. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Hadoop.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of ZooKeeper,Sqoop and Cassandra. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

ZooKeeper,Sqoop and Cassandra MCQs | Page 7 of 11

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Q61.
Data in the commit log is purged after its corresponding data in the memtable is flushed to an _________

a.

SSHables

b.

SSTable

c.

Memtables

d.

None of the mentioned

Discuss
Answer: (b).SSTable
Q62.
For each SSTable, Cassandra creates _________ index.

a.

memory

b.

partition

c.

in memory

d.

all of the mentioned

Discuss
Answer: (b).partition
Q63.
Cassandra marks data to be deleted using _________

a.

tombstone

b.

combstone

c.

tenstone

d.

none of the mentioned

Discuss
Answer: (a).tombstone
Q64.
Tombstones exist for a configured time period defined by the _______ value set on the table.

a.

gc_grace_minutes

b.

gc_grace_time

c.

gc_grace_seconds

d.

gc_grace_hours

Discuss
Answer: (c).gc_grace_seconds
Q65.
_________ is a Cassandra feature that optimizes the cluster consistency process.

a.

Hinted handon

b.

Hinted handoff

c.

Tombstone

d.

Hinted tomb

Discuss
Answer: (b).Hinted handoff
Q66.
Cassandra searches the __________ to determine the approximate location on disk of the index entry.

a.

partition record

b.

partition summary

c.

partition search

d.

all of the mentioned

Discuss
Answer: (b).partition summary
Q67.
You configure sample frequency by changing the ________ property in the table definition.

a.

index_time

b.

index_interval

c.

index_secs

d.

none of the mentioned

Discuss
Answer: (b).index_interval
Q68.
The compression offset map grows to ____ GB per terabyte compressed.

a.

1-3

b.

10-16

c.

20-22

d.

0-1

Discuss
Answer: (a).1-3
Q69.
The type of __________ strategy Cassandra performs on your data is configurable and can significantly affect read performance.

a.

compression

b.

collection

c.

compaction

d.

decompression

Discuss
Answer: (c).compaction
Q70.
There are _________ types of read requests that a coordinator can send to a replica.

a.

two

b.

three

c.

four

d.

all of the mentioned

Discuss
Answer: (b).three
Page 7 of 11

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