gs gs112 MongoDB CRUD Concepts and Operation - Getting Started with MongoDB - Quiz No.2
gs gs112 MongoDB Quiz
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Question 1: When you query a collection, MongoDB returns a ________ object that contains the results of the query.
row
cursor
colums
none of the mentioned
Question 2: Point out the correct statement.
A database is a set of key-value pairs
A MongoDB deployment hosts a number of databases
A document holds a set of collections
All of the mentioned
Question 3: Which of the following method returns true if the cursor has documents?
hasMethod()
hasNext()
hasDoc()
all of the mentioned
Question 4: ____________ method renders the document in a JSON-like format.
displayjson
print
printjson
printdoc
Question 5: Point out the wrong statement.
Documents have static schema in MongoDB
Eventually-consistent reads can be distributed over replicated servers
Indexes can include keys from embedded documents and arrays
None of the mentioned
Question 6: Which of the following method is called while accessing documents using the array index notation?
cur.toArray()
cursor.toArray()
doc.toArray()
all of the mentioned
Question 7: The mongo shell and the drivers provide several cursor methods that call on the cursor returned by the _______ method to modify its behavior.
cursor()
find()
findc()
none of the mentioned
Question 8: Which of the following method corresponds to Order by clause in SQL?
sort()
order()
orderby()
all of the mentioned
Question 9: The __________ method limits the number of documents in the result set.
limit()
limitOf()
limitBy()
none of the mentioned
Question 10: Which of the following line skips the first 5 documents in the bios collection and returns all remaining documents?
db.bios.find().limit( 5 )
db.bios.find().skip( 1 )
db.bios.find().skip( 5 )
db.bios.find().sort( 5 )
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