MongoDB Sharding and Data Distribution Quiz

Welcome to the MongoDB Sharding and Data Distribution Quiz! This quiz will test your understanding of sharding, a key feature in MongoDB that allows horizontal scaling and efficient data distribution across clusters. You’ll explore shard keys, chunk management, balancer operations, and how data is stored and accessed in a sharded setup. Good luck, and enjoy deepening your knowledge of MongoDB's sharding architecture!

1 / 20

Which of the following best describes chunk splitting in MongoDB?

Splitting data evenly across replica sets

Splitting oversized chunks into smaller chunks for balanced distribution

Dividing data across shards based on shard keys

Partitioning data by query type

2 / 20

Which of the following is the main role of a mongos in a MongoDB sharded cluster?

It manages shard key indexes

It stores the data across shards

It routes queries to the appropriate shard

It acts as the primary replica set

3 / 20

In MongoDB, what type of shard key distribution strategy is recommended to prevent hotspots?

Geo-spatial sharding

Compound key sharding

Hash-based sharding

Range-based sharding

4 / 20

How are chunks distributed in MongoDB’s sharding architecture?

Based on the data type of the shard key

Randomly across available shards

Based on the values of the shard key

In a round-robin manner across all shards

5 / 20

What is the main disadvantage of range-based sharding in MongoDB?

It cannot be used with compound shard keys

It leads to inefficient indexing

It does not support replication

It can cause data hotspots due to uneven chunk distribution

6 / 20

What happens when a shard in a MongoDB sharded cluster becomes unresponsive?

The cluster will continue functioning as normal, but queries involving the unresponsive shard will fail

The cluster automatically stops accepting new queries

The query router will mark the shard as read-only

The shard’s data is immediately transferred to another shard

7 / 20

What is a shard key in MongoDB?

A field used for querying

A field that determines how data is distributed across shards

A key that encrypts data during distribution

A key used for indexing

8 / 20

Which of the following sharding strategies in MongoDB helps to evenly distribute data across shards based on range or hash partitioning?

Chunk splitting

Query routing

Shard key selection

Balancing strategy

9 / 20

In MongoDB sharding, which of the following ensures that the cluster remains balanced by redistributing data as necessary?

Query router

Shard key

Config servers

Chunk migration

10 / 20

MongoDB’s sharding architecture allows read and write operations to be handled on any shard in the cluster. True or False?

True

False

11 / 20

What happens when a query is sent to a sharded MongoDB cluster?

The query router determines which shard holds the necessary data and directs the query accordingly

It is routed to all shards for execution

It is only executed on the primary shard

It is automatically split across all available config servers

12 / 20

What command is used to add a shard to a MongoDB cluster?

sh.addShard()

addShardCluster()

addShard()

db.addShard()

13 / 20

Which of the following commands is used to check the status of the balancer in a MongoDB sharded cluster?

db.adminCommand({balancerStatus: 1})

sh.status()

sh.isBalancerRunning()

balancer.status()

14 / 20

Once a shard key is selected for a collection, it cannot be changed. True or False?

True

False

15 / 20

MongoDB allows for any field to be used as a shard key. True or False?

True

False

16 / 20

What is the purpose of the config servers in a MongoDB-sharded cluster?

To store metadata about data distribution across shards

To process queries for data distribution

To store application logs

To manage backups

17 / 20

When would you disable the balancer in a MongoDB sharded cluster?

To increase indexing speed

To prevent write operations

When adding a new shard

During data migration or maintenance

18 / 20

What is the recommended minimum number of config servers in a production MongoDB sharded cluster?

19 / 20

A shard key is required for all sharded collections in MongoDB. True or False?

True

False

20 / 20

In a sharded MongoDB cluster, where is metadata about the distribution of data stored?

Config servers

Replica sets

Shard key

Query routers

Your score is

The average score is 0%

Understanding MongoDB Sharding and Data Distribution is essential for designing and maintaining distributed systems that handle large datasets efficiently while optimizing query performance and resource utilization.

The MongoDB Sharding and Data Distribution quiz is designed for intermediate-level professionals. It targets individuals with foundational knowledge of MongoDB and wants to deepen their understanding of distributed database systems’ sharding, data distribution, and scaling strategies.

Good luck!