_________ is a Cassandra feature that optimizes the cluster consistency process.
a) Hinted handon
b) Hinted handoff
c) Tombstone
d) Hinted tomb
Q.2.
Point out the correct statement.
a) Cassandra does not immediately remove data marked for deletion from disk
b) A deleted column can reappear if you do not run node repair routinely
c) The deletion of marked data occurs during compaction
d) All of the mentioned
Q.3.
Cassandra searches the __________ to determine the approximate location on disk of the index entry.
a) partition record
b) partition summary
c) partition search
d) all of the mentioned
Q.4.
You configure sample frequency by changing the ________ property in the table definition.
a) index_time
b) index_interval
c) index_secs
d) none of the mentioned
Q.5.
Point out the wrong statement.
a) A hint indicates that a write needs to be replayed to one or more unavailable nodes
b) When the cluster cannot meet the consistency level specified by the client, Cassandra does store a hint
c) By default, hints are saved for three hours after a replica fails because if the replica is down longer than that, it is likely permanently dead
d) All of the mentioned
Q.6.
The compression offset map grows to ____ GB per terabyte compressed.
a) 1-3
b) 10-16
c) 20-22
d) 0-1
Q.7.
The type of __________ strategy Cassandra performs on your data is configurable and can significantly affect read performance.
a) compression
b) collection
c) compaction
d) decompression
Q.8.
There are _________ types of read requests that a coordinator can send to a replica.
a) two
b) three
c) four
d) all of the mentioned
Q.9.
_________ can be configured per table for non-QUORUM consistency levels.
a) Read repair
b) Read damage
c) Write repair
d) None of the mentioned
Q.10.
If the table has been configured with the __________ property, the coordinator node for the read request will retry the request with another replica node.
a) rapid_retry
b) speculative_retry
c) speculative_rapid
d) none of the mentioned
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