Question 1 : On Linux, use the ______ command to check if disk I/O is a bottleneck for your database.
1. stat
2. iostats
3. iostat
4. none of the mentioned
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Question 2 : Which of the following represents Shared lock ?
1. R
2. w
3. r
4. W
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Question 3 : MongoDB stores tag sets in the replica set configuration object, which is the document returned by _____
1. rs.config()
2. rs.conf()
3. rs.confstats()
4. all of the mentioned
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Question 4 : When the TTL thread is active, you will see _______ operations in the output of db.currentOp().
1. read
2. update
3. delete
4. all of the mentioned
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Question 5 : The ___________ collection stores custom roles that administrators create and assign to users to provide access to specific resources.
1. admin.system.role
2. admin.system.roles
3. admin.system.roleasign
4. all of the mentioned
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Question 6 : ________ contains a counter of the total number of clients with active operations in progress or queued.
1. globalLock.active
2. localLock.activeClients
3. globalLock.activeClients
4. all of the mentioned
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Question 7 : Which of the following sets the database profiler level ?
1. systemLog.verbosity
2. operationProfiling.mode
3. operationProfiling.slowOpThresholdMs
4. none of the mentioned
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Question 8 : What is the size of Chunk by default ?
1. 64 MB
2. 64 GB
3. 64 KB
4. 32 MB
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Question 9 : Which of the following provide acceptable performance levels for multiple mongod instances?
1. GridFS
2. SST
3. MMS
4. SSD
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Question 10 : _____ bit builds of mongod enable journaling by default.
1. 8
2. 16
3. 32
4. 64
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