gs gs112 Sharding Concepts, Mechanics and Sharded Cluster - Sharding Mechanics - Quiz No.1
gs gs112 MongoDB Quiz
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Question 1: The _________ process is responsible for redistributing the chunks of a sharded collection evenly among the shards for every sharded collection.
Balancer
Sharder
Replicator
All of the mentioned
Question 2: Point out the correct statement.
Splitting is the process MongoDB uses to distribute data of a sharded collection evenly across a sharded cluster
Any mongos instance in the cluster can start a balancing round
When a shard has too many of a sharded collection’s chunks compared to other shards, MongoDB splits balances the chunks across the shards
All of the mentioned
Question 3: Use _______ migration to distribute data during bulk inserts.
automatic
manual
temporary
all of the mentioned
Question 4: The balancer process sends the _______ command to the source shard.
moveChunkShard
migChunk
moveChunk
all of the mentioned
Question 5: Point out the wrong statement.
When fully synchronized, the destination shard connects to the config database and updates the cluster metadata with the new location for the chunk
The destination shard builds any indexes required by the source that do not exist on the destination
The destination shard begins requesting documents in the chunk and starts receiving copies of the data
None of the mentioned
Question 6: The source shard is responsible for incoming ______ operations for the chunk.
read
write
read-write
all of the mentioned
Question 7: ________ can alter the behavior so that the delete phase of the current migration blocks the start of the next chunk migration.
_waitForUpdate
_waitForDelete
_waitForInsert
All of the mentioned
Question 8: The default value _________ becomes true for all chunk migrations.
secThrottle
secondaryThrottle
primaryThrottle
all of the mentioned
Question 9: You can set the _________ option on the balancer configuration to set different write concern semantics.
writeConcern
updateConcern
readConcern
all of the mentioned
Question 10: With __________ enabled, the source shard archives the documents in the migrated chunks in a directory named after the collection namespace.
sharding.archiveChunks
sharding.archiveMovedChunks
shard.archiveMovedChunks
none of the mentioned
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