a) When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards
b) On larger clusters, scatter gather queries are unfeasible for routine operations
c) Replica sets use read preferences to determine where and how to route read operations to members of the replica set
d) None of the mwntioned
Answer: a
Explanation: If a query does not include the shard key, the mongos must direct the query to all shards in the cluster.
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What is the output of the given code?
counter=1
if counter<=5
puts (counter)
counter=counter+1What is the output of the given code?
if(a==10 && b=9)
print “true”
else
print “false”
endWhich of the following are used for comparison?
What is the output of the given code?
a=10
b=9
if(a>b)
print (“a greater than b”)
else
print “Not greater”
endAssignment operator is also known as relational operator.
What is the output of the given code?
a=”string”
b=”strings”
if(a==b)
print (“a and b are same”)
else
print “Not same”
endWhat is the output of the given code?
test_1 = 17 > 16
puts(test_1)
test_2 = 21 <= 30
puts(test_2)
test_3 = 9 >= 9
puts(test_3)
test_4 = -11 > 4
puts(test_4)
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