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nosql all questions and 100% correct answers (A+)
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nosql all questions and 100% correct answers (A+)The "Many Sources One View" use case of MongoDB suggests that a. MongoDB can
collect vast amounts of data. b. MongoDB can store data collected from multiple
sources as long as they are the same format. c. MongoDB can ingest different types of
data from different sources and consolidate it into one view for all data.
d. MongoDB can store data that is of different types and formats. - ANSWER c. MongoDB
can ingest different types of data from different sources and consolidate it into one view
for all data.
What is the fully managed service model which many NoSQL databases now leverage?
a. Software-as-a-service (SaaS)
b. Network-as-a-service (NaaS)
с. Platform-as-a-service (PaaS)
d. Database-as-a-service (DBaaS) - ANSWER d. Database-as-a-service (DBaaS)
What is it that makes Key-Value NoSQL databases powerful for simple CRUD functions?
a. The value blob is opaque.
b. They are represented as a hashmap.
c. They are atomic for key operations.
d. They shard easily across nodes. - ANSWER b. They are represented as a hashmap.
Where is the collection created correctly? :
a. db.createCollections(some)
b. db.collection("some")
c. db.createCollection("some")
d. db.create("some") - ANSWER c. db.createCollection("some")
,What is the document?
a. None answers correct
b. Document is the equivalent to rows in RDBMS
c. Document is the equivalent to tables in RDBMS
d. In mongoldb document is the log files. - ANSWER b. Document is the equivalent to
rows in RDBMS
In MongoDB operations act with the data of a single collection.
a. READ
b. GRID
с. CRUD
d. All of the mentioned - ANSWER с. CRUD
Which of the following statements is NOT true for naming a database in MongoDB?
a. It should be less than 64 characters
b. Cannot contain any of these symbols \\.\"$*<>:|?
c. May be empty
d. Cannot contain null - ANSWER c. May be empty
What is excluded from CRUD operations?
a. delete
b. update
c. write
d. create
e. read - ANSWER c. write
What is the BSON in MongoDB?
,a. Binary representation of JSON
b. A query language
c. A backup tool
d. none of the mentioned - ANSWER a. Binary representation of JSON
Document databases can't handle transactions operating over multiple documents.
Select one:
True
False - ANSWER True
What is the main objective of NoSQL?
a. NoSQL databases allow storing nonstructured data.
b. NoSQL provides an alternative to SQL databases to store textual data.
c. NoSQL is a new data format to store large datasets.
d. NoSQL is not suitable for storing structured data. - ANSWER b. NoSQL provides an
alternative to SQL databases to store textual data.
What are the kinds of NoSQL databases?
a. Key-value stores
b. Graph & Column-oriented databases
с. All of the above
d. Document databases - ANSWER с. All of the above
MongoDB documents of a similar type are grouped into
a. A collection
b. An index
c. A replica set
, d. A cluster - ANSWER a. A collection
Where the database is created correctly? :
a. use db_name
b. using db_name
c. set db_name
d. create db_name
e. make db_name - ANSWER a. use db_name
What does "horizontal scalability" refer to in the context of NoSQL databases?
a. Normalizing data structures
b. Expanding the database server vertically
c. Adding more servers to handle increased load
d. All of the mentioned
e. Enforcing strict ACID transactions - ANSWER c. Adding more servers to handle
increased load
Which port does MongoDB listen on? :
a. 27710
b. 27017
c. 27170
d. 72071 - ANSWER b. 27017
Which of the following best describes MongoDB?
a. Relational database
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