View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 381 Which BSON type represents a 64-bit signed integer? BSON Double BSON Int32 BSON Decimal128 BSON Int64 Correct Answer: 4 Explanation: BSON Int64 represents a signed 64-bit integer in MongoDB documents. It is useful when numeric values can exceed the range supported by […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 361 Which command displays available databases and their sizes? listDatabases showDatabaseInfo databaseList getDatabaseSizes Correct Answer: 1 Explanation: The listDatabases command returns information about databases available on a MongoDB deployment, including database names and size-related information. It is commonly used by administrators when reviewing […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 341 Which fill method carries the last observed value forward? $locf $carryForward $forwardFill $previousValue Correct Answer: 1 Explanation: The $locf expression implements last observation carried forward behavior for missing values in supported aggregation workflows. When a value is unavailable, MongoDB can use the […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 321 Which utility restores data created by mongodump? mongoload mongorecover mongorebuild mongorestore Correct Answer: 4 Explanation: The mongorestore utility restores BSON data produced by mongodump. It can restore an entire database, selected collections, or specific backup content depending on the supplied options. Administrators […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 301 Which command changes a collection’s shard key? changeShardKey() updateShardKey() reshardCollection replaceShardKey() Correct Answer: 3 Explanation: The reshardCollection command is used to change the shard key of an existing sharded collection. Resharding can redistribute data according to a new shard key when the […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 281 Which update operator renames an existing field? $rename $replace $relabel $modifyName Correct Answer: 1 Explanation: The $rename update operator changes the name of an existing field without changing its stored value. It is useful when a schema evolves and an application needs […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 261 Which MongoDB command adds a shard to a sharded cluster? sh.registerShard() sh.createShard() sh.joinShard() sh.addShard() Correct Answer: 4 Explanation: The sh.addShard() helper adds a shard to an existing MongoDB sharded cluster. A shard is typically a replica set that stores a portion of […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 241 Which MongoDB setting defines how long logical sessions remain active? sessionTimeoutMS logicalSessionTimeout sessionLifetime logicalSessionTimeoutMinutes Correct Answer: 4 Explanation: MongoDB uses a logical session timeout to determine how long an inactive logical session remains available before it expires. Logical sessions support features such […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 221 Which MongoDB role provides permission to monitor cluster activity? readCluster clusterReader clusterMonitor monitorAnyDatabase Correct Answer: 3 Explanation: The clusterMonitor built-in role provides privileges intended for monitoring MongoDB deployments. It is commonly associated with monitoring tools and administrative accounts that need to inspect […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 201 Which MongoDB connection option controls the minimum connections kept in a pool? poolMinimum minimumPool connectionFloor minPoolSize Correct Answer: 4 Explanation: The minPoolSize connection option specifies the minimum number of connections that a MongoDB driver maintains in a connection pool. Keeping a baseline […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 181 Which MongoDB option specifies the index to use for a query? forceIndex hint() useIndex() selectIndex() Correct Answer: 2 Explanation: The hint() method instructs MongoDB to use a particular index when executing a query. It can be useful when testing index behavior, troubleshooting […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 161 Which MongoDB operator tests whether a field value is greater than a specified value? $above $greater $gtValue $gt Correct Answer: 4 Explanation: The $gt comparison operator matches documents where a specified field contains a value greater than the supplied comparison value. It […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 141 Which MongoDB command changes the current database context? use databaseName switch databaseName select databaseName change databaseName Correct Answer: 1 Explanation: The use command changes the current database context in the MongoDB shell. It does not create the database immediately; the database becomes […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 121 Which MongoDB setting controls the number of milliseconds between replica heartbeats? electionTimeoutMillis heartbeatTimeoutSecs replicationInterval heartbeatIntervalMillis Correct Answer: 4 Explanation: heartbeatIntervalMillis controls how frequently replica set members send heartbeats to one another. These heartbeats allow members to monitor the availability and state of […]

View Full MongoDB C100DBA Exam Dumps and Practice Test Dumps   Question 101 Which MongoDB command displays the current replication configuration? rs.status() rs.info() rs.members() rs.conf() Correct Answer: 4 Explanation: rs.conf() returns the replica set configuration document used by MongoDB. It contains settings for members, including host information, voting configuration, priorities, hidden status, and other member […]