MongoDB/MongoDB Mcq Question Set 6 Sample Test,Sample questions

Question:
 For replica sets, mongodump also supports a point in time feature with the ________ option.

1.–oplog

2. –log

3. –op

4.None of the mentioned


Question:
 If applications modify data while mongodump is creating a backup _________ will compete for resources with those applications.

1.mongostore

2.mongorestore

3.mongod

4.mongodump


Question:
 Ops Manager reads directly from the Backup Blockstore database and transfers files either through _______

1.TCP

2.HTTPS

3.MMS

4. All of the mentioned


Question:
 Point out the correct statement.

1.The amount of oplog to keep per backup is configurable and affects the time window available for checkpoint and point-in-time restores

2. To get a consistent snapshot of a sharded system, you must enable the balancer

3.Backups produced by copying the underlying data do support point in time recovery

4.All of the Mentioned


Question:
 Point out the correct statement.

1.In MongoDB 3.0, cursor.explain() returns the indexOnly field to indicate whether the index covered a query

2.When an index covers a query, MongoDB can both match the query conditions and return the results using only the index keys

3.For read-heavy applications, deploy sharding and add one or more shards to a sharded cluster to distribute load among mongod instances

4. All of the mentioned


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

1.mongostat

2. mongod

3. keyFile

4.All of the Mentioned


Question:
All collections have a unique ________ lock that allows multiple clients to modify documents in different collections at the same time.

1.writer

2.readers-writer

3.readers

4.All of the Mentioned


Question:
Backup can also create snapshots of _________ that are run as single-member replica sets.

1. documents

2.standalones

3.backups

4.None of the mentioned


Question:
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


Question:
mongodump and mongorestore can operate against a running _______ process.

1.mongostore

2. mongorestore

3.mongod

4.None of the mentioned


Question:
On Linux the ______ manager can create a snapshot.

1.LVM

2.SVM

3.MMS

4. All of the mentioned


Question:
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


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

1. mdump

2.head

3.tail

4. All of the mentioned


Question:
Ops Manager provides Ops Manager ________ and Ops Manager Backup, which helps users optimize clusters and mitigate operational risk.

1.Performance

2.Administration

3. Monitoring

4.None of the mentioned


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

1.Automation

2.Performance

3.Monitoring

4.Backup


Question:
Ops Manager _________ provides an interface for configuring MongoDB nodes and clusters and for upgrading your MongoDB deployment.

1.Automation

2.Performance

3.Monitoring

4.None of the mentioned


Question:
Point out the correct statement.

1. Replica set configuration is complex

2.MongoDB includes support for two storage engines

3. MongoDB includes support for more than three storage engines

4.All of the Mentioned


Question:
Point out the correct statement.

1.Database commands cannot return statistics regarding the current database state with greater fidelity

2.Monitoring is a critical component of all database administration

3.The MongoDB distribution does not include utilities that quickly return statistics about instances’ performance and activity

4.All of the Mentioned


Question:
Point out the correct statement.

1.MMS offers point in time recovery of MongoDB replica sets

2. MongoDB provides a web interface that exposes diagnostic and monitoring information in a simple web page

3.db.Status() outputs an account of the state of a MongoDB instance

4. none of the mentioned


Question:
Point out the correct statement.

1. The mechanics of snapshots depend on the underlying storage system

2. To get a consistent snapshot of a sharded system, you must disable the balancer

3.If your storage system does not support snapshots, you can copy the files directly using cp, rsync, or a similar tool

4.All of the Mentioned


Question:
Point out the correct statement.

1.Replica set configuration is straightforward

2.Keyfile must be less than one kilobyte in size

3.Keyfile may only contain characters in the base64 set and the file must not have group or “world” permissions on UNIX systems

4.All of the Mentioned


Question:
Point out the correct statement.

1. Config servers are not replica sets

2.Sharding requires a number of mongod instances with different configurations

3. The config servers store the cluster’s metadata, while the cluster distributes data among one or more shard servers

4.None of the mentioned


Question:
Point out the correct statement.

1.MongoDB distributions are currently available for Mac OS X, Linux, Windows Server 2012, Windows Server 2008 R2 64bit, Windows 7 (64 bit), Windows Vista, and Solaris

2.The MongoDB distribution for Solaris include support for the WiredTiger storage engine

3. mongod will not start if dbPath contains data files created by a storage engine

4. none of the mentioned


Question:
Point out the wrong statement.

1.If you shut down a secondary to capture data with mongodump ensure that the operation can complete before its oplog becomes too stale to continue replicating

2.MongoDB Cloud Manager continually backs up MongoDB replica sets

3.Sharded cluster snapshots are easy to achieve with other MongoDB backup methods

4.None of the mentioned


Question:
Replica set configuration requires that the _______ have a value that is consistent among all members of the set.

1.replSetName

2. instance

3.MMS

4.All of the Mentioned


Question:
Sharded clusters snapshots temporarily stop the balancer via ________

1.Mongod

2. MMS

3. MonitorMMS

4. mongos


Question:
The agent ships initial sync and oplog data over HTTPS back to ______

1.Opscore Manager

2. Ops Manager

3.mongod

4. none of the mentioned


Question:
The MongoDB ______ supports the backing up and restoring of MongoDB deployments

1. Cloud Manager

2.MMS

3.MonitorMMS

4.None of the mentioned


Question:
The ________ reflect the amount of storage used, the quantity of data contained in the database, and object, collection, and index counters.

1.dbStats

2.db.serverStatus()

3.db.statserver()

4. none of the mentioned


Question:
The _________ field provides the amount of resident memory in use.

1.mem.resident

2.memory.resident

3.mem.resident

4.All of the Mentioned


Question:
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


Question:
To mitigate the impact of mongodump on the performance of the replica set, use mongodump to capture backups from a _________ member of a replica set.

1.primary

2.secondary

3.snaphot

4.None of the mentioned


Question:
What is the size of Chunk by default?

1.64 MB

2. 64 GB

3.64 KB

4. 32 MB


Question:
When connected to a MongoDB instance, mongodump can adversely affect ______ performance.

1. mdump

2. mongodump

3.mongod

4.All of the Mentioned


Question:
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


Question:
Which of the following document configures the threshold which determines whether a query is “slow” for the purpose of the logging system?

1.systemLog.verbosity

2.operationProfiling.mode

3.operationProfiling.slowOpThresholdMs

4. none of the mentioned


Question:
Which of the following document details the state and configuration of the replica set and statistics about its members?

1.replSetGetStatus

2.db.serverStatus()

3.db.stats()

4.None of the mentioned


Question:
Which of the following provide acceptable performance levels for multiple mongod instances?

1. GridFS

2.SST

3. MMS

4.SSD


Question:
Which of the following represents Shared lock?

1.R

2.w

3.r

4.W


Question:
Which of the following sets the database profiler level?

1.systemLog.verbosity

2.operationProfiling.mode

3.operationProfiling.slowOpThresholdMs

4.None of the mentioned


Question:
Which of the following storage engine is supported by default?

1.MMAPv1

2.WiredTiger

3.WirelessTiger

4.All of the Mentioned


Question:
___ bit builds of mongod enable journaling by default.

1. 8

2.16

3.32

4.64


Question:
___ is /srv/mongodb, which specifies where MongoDB will store its data files.

1. dbPath

2.dbPathSts

3. db.Op

4.None of the mentioned


Question:
____ an on-premise solution, has similar functionality to the cloud version.

1.Opscore Manager

2.Ops Manager

3.Mongod

4. none of the mentioned


Question:
____ 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


Question:
____ provides statistics that resemble dbStats on the collection level.

1.dbStats

2.db.serverStatus()

3.db.statserver()

4.collstats


Question:
_____ method is useful tool for identifying the database instance’s in-progress operations.

1.db.current

2.db.currentOp

3. db.Op

4.None of the mentioned


Question:
_____ tracks and reports the current read and write activity of a MongoDB instance, and reports these statistics on a per collection basis.

1.mongostat

2.mongod

3.mongotop

4.All of the Mentioned


Question:
______ captures and returns the counts of database operations by type.

1.mongostat

2.mongod

3. mms

4.All of the Mentioned


Question:
_______ returns a general overview of the status of the database, detailing disk usage, memory use, connection, journaling, and index access.

1.dbStats

2.db.serverStatus()

3.db.stats()

4. none of the mentioned


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