Question 1

Which of the following API is used for Column Families and Tables in Cassandra?

Accepted Answer

Column Family-CQL API ;Table-Thrift API

Answer

Column Family-Thrift API ;Table-Thrift API

Answer

Column Family-Thrift API ;Table-CQL API

Answer

Column Family-CQL API ;Table-CQL API

Question 2

In a collection that contains 100 post documents, what does the following command do?

db.posts.find().skip(5).limit(5)

Accepted Answer

C - Skips the first five documents and returns the next five

Answer

A - Skip and limit nullify each other. Hence returning the first five documents.

Answer

D - Limits the first five documents and then return them in reverse order

Answer

B - Skips the first five documents and returns the sixth document five times

Question 3

Which of the following commands will return all the posts with number of likes greater than 100 and less than 200, both inclusive?

Accepted Answer

D - db.posts.find({ likes : { $gte : 100 , $lte : 200 } } );

Answer

A - db.posts.find({ likes : { $gt : 100, $lt : 200 } } );

Answer

B - db.posts.find({ likes : { $gte : 100, $lt : 200 } } );

Answer

C - db.posts.find({ likes : { $gt : 100 , $lte : 200 } } );

Question 4

Which of the following commands removes a single document that matches the condition that Author is Joe?

Accepted Answer

D - Both b and c

Answer

C - db.posts.remove( { Author : "Joe" }, {justOne: true} )

Answer

A - db.posts.removeOne( { Author : "Joe" }, 1 )

Answer

B - db.posts.remove( { Author : "Joe" }, 1 )

Question 5

What is CQL stands for?

Accepted Answer

Cassandra Query Language

Answer

Component Query Language

Answer

Cluster Query Language

Answer

Commit Query Language

Question 6

Apache Cassandra is a massively scalable open source _______ database.

Accepted Answer

B)NoSQL

Answer

C)NewSQL

Answer

A)SQL

Answer

D)All of the above

Question 7

Cassandra uses a protocol called _______ to discover location and state information.

Accepted Answer

A)gossip

Answer

D)All of the above

Answer

B)goss

Answer

C)intergos

Question 8

Cassandra has peer-to-peer distributed system across its nodes.

Accepted Answer

A)True

Answer

C)Can not say

Answer

B)False

Question 9

Which of the following is not a part of Cassandra architecture?

Accepted Answer

C)Column

Answer

D)Bloom Filter

Answer

A)MemTable

Answer

B)Commit log

Question 10

Which of the following decides the distribution of data in a cluster?

Accepted Answer

A)Partitioner

Answer

B)Compaction

Answer

D)Gossip Protocol

Answer

C)Commit log

Question 11

Which of them is a memory-resident data structure?

Accepted Answer

B)Mem-table

Answer

D)Bloom filter

Answer

A)SSTable

Answer

C)Data center

Question 12

Which of the following is a unit of replication in Cassandra?

Accepted Answer

A)Row

Answer

D)None of the above

Answer

C)Both A and B

Answer

B)Column

Question 13

In which of the following data type order of the element entered is maintained?

Accepted Answer

C)List

Answer

B)Map

Answer

A)Set

Answer

D)None of the above

Related quizzes

Related quizzes