MongoDB Practice Test 4

1. Which of the following collections work in a way similar to circular buffers?

Secondary

All of the mentioned

Sharded

Capped

2. Which of the following should not be used to provide extra capacity for reads?

secondary

primaryPreferred

none of the mentioned

primary

3. Ops Manager ______ provides scheduled snapshots and point-in-time recovery of your MongoDB replica sets and sharded clusters.

Automation

Monitoring

Backup

Performance

4. Point out the wrong statement.

The options document creates a capped collection or preallocates space in a new ordinary collection

None of the mentioned

Queries need an index to return documents in insertion order

Capped collections have maximum size or document counts that prevent them from growing beyond maximum thresholds

5. Which of the following command returns quickly and does not impact MongoDB performance?

db.serverStatus()

dbStats

none of the mentioned

db.stats()

6. On Linux, use the ______ command to check if disk I/O is a bottleneck for your database.

none of the mentioned

iostat

iostats

stat

7. Setting _______ enables authentication and specifies a key file for the replica set member use to when authenticating to each other.

all of the mentioned

mongostat

keyFile

mongod

8. Ops Manager maintains one _____ database for each backed-up replica set.

tail

head

all of the mentioned

mdump

9. MongoDB requires a filesystem that supports ______ on directories.

sync()

fsync()

all of the mentioned

fsynconce()

10. MongoDB Cloud Manager provides integration with Amazon Web Services (AWS) and lets you deploy new ______ instances directly from MongoDB Cloud Manager.

ECS

All of the mentioned

EC3

EC2