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MCQs

Total Questions : 10
Question 1. Point out the wrong statement :
  1.    Secondary indices is not available in MongoDB
  2.    MongoDB supports search by field, range queries, regular expression searches
  3.    MongoDB can store the business subject in the minimal number of documents
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Secondary indices is not available in MongoDB


Any field in a MongoDB document can be indexed.


Question 2. _____________ can be used for batch processing of data and aggregation operations.
  1.    Hive
  2.    MapReduce
  3.    Oozie
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> MapReduce


The aggregation framework enables users to obtain the kind of results for which the SQL GROUP BY clause is used.


Question 3. MongoDB can be used as a ____________, taking advantage of load balancing and data replication features over multiple machines for storing files.
  1.    AMS
  2.    CMS
  3.    File system
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> AMS


The data is split into ranges (based on the shard key) and distributed across multiple shards.


Question 4. MongoDB has been adopted as ________ software by a number of major websites and services.
  1.    frontend
  2.    backend
  3.    proprietary
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> backend


MongoDB is the most popular NoSQL database system.


Question 5. Which of the following is a NoSQL Database Type ?
  1.    SQL
  2.    Document databases
  3.    JSON
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> Document databases


Document databases pair each key with a complex data structure known as a document.


Question 6. Which of the following is a wide-column store ?
  1.    Cassandra
  2.    Riak
  3.    MongoDB
  4.    Redis
 Discuss Question
Answer: Option A. -> Cassandra


Wide-column stores such as Cassandra and HBase are optimized for queries over large datasets, and store columns of data together, instead of rows.


Question 7. Which of the following sorting is not supported by MongoDB ?
  1.    collation
  2.    collection
  3.    heap
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> collation


MongoDB does not support collation-based sorting and is limited to byte-wise comparison via memcmp.


Question 8. Which of the following is a wide-column store ?
  1.    Cassandra
  2.    Riak
  3.    MongoDB
  4.    Redis
 Discuss Question
Answer: Option A. -> Cassandra


Wide-column stores such as Cassandra and HBase are optimized for queries over large datasets, and store columns of data together, instead of rows.


Question 9. Point out the wrong statement :
  1.    Non Relational databases require that schemas be defined before you can add data
  2.    NoSQL databases are built to allow the insertion of data without a predefined schema
  3.    NewSQL databases are built to allow the insertion of data without a predefined schema
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Non Relational databases require that schemas be defined before you can add data


There's also no way, using a relational database, to effectively address data that's completely unstructured or unknown in advance.


Question 10. Which of the following language is MongoDB written in ?
  1.    Javascript
  2.    C
  3.    C++
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned


MongoDB (from humongous) is a cross-platform document-oriented database.


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