MongoDB Optimization Strategies: Advanced-Level Quiz

MongoDB Optimization Strategies Quiz

This quiz covers key techniques for optimizing MongoDB performance, including indexing, query tuning, and schema design. You’ll also explore memory management, sharding, and replication strategies. Good luck!

1 / 20

With the WiredTiger storage engine, use of _______ is strongly recommended to avoid performance issues.

SST

XFS

SSD

All of the above

2 / 20

Creating too many indexes in MongoDB can negatively impact write performance. True or False?

True

False

3 / 20

When running MongoDB in production on Linux, it is recommended that you use Linux kernel version 2.6.36 or later. True or False?

True

False

4 / 20

With the MMAPv1 storage engine, MongoDB preallocates its database files before using them and often creates large files. True or False?

True

False

5 / 20

Which operation would benefit most from a compound index in MongoDB?

Aggregation pipelines

A query filtering by a single field

Insert operations

A query that filters and sorts by multiple fields

6 / 20

When optimizing MongoDB writes, which technique can help prevent write conflicts in a sharded cluster?

Use compound indexes

Use large document sizes

Distribute write operations across shards based on shard keys

Disable journaling

7 / 20

The TCP keepalive on the Azure load balancer is ______ seconds by default.

100

150

200

8 / 20

Which of the following MongoDB tools helps identify slow queries and performance bottlenecks?

Aggregation Framework

MongoDB Atlas

Ops Manager

Query Profiler

9 / 20

What is the primary purpose of using indexes in MongoDB optimization?

To enforce schema validation

To reduce the size of documents

To replicate data faster

To speed up query execution

10 / 20

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

readers

writer

readers-writer

none of the above

11 / 20

The use of compound indexes can improve query performance by supporting multiple fields in a query. True or False?

True

False

12 / 20

Which of the following storage engine is supported by default?

WiredTiger

WirelessTiger

MMAPv1

All of the above

13 / 20

How does proper schema design contribute to MongoDB optimization?

Slows down read performance

Reduces unnecessary data duplication

Lowers write performance

Increases the need for more indexes

14 / 20

By default, WiredTiger uses a zip compression library. True or False?

True

False

15 / 20

MongoDB requires a filesystem that supports ______ on directories.

fsync()

sync()

fsynconce()

none of the above

16 / 20

Which of the following is a best practice for optimizing read operations in MongoDB?

Perform frequent full-text searches

Store all data in a single collection

Use the projection to return only required fields

Use only single-field indexes

17 / 20

zlib provides a better compression rate but has a higher performance cost. True or False?

True

False

18 / 20

What does the MongoDB "working set" refer to in terms of optimization?

The amount of data MongoDB keeps in memory for fast access

The set of collections in a database

The number of active user connections

The number of indexes used by a query

19 / 20

WiredTiger can compress collection data using either snappy or zlib compression library.

lib

Kit

zip

snappy

20 / 20

Which of the following is especially important in Sharded Clusters?

NTP

NSS

SSD

STP

Your score is

The average score is 0%

MongoDB Optimization Strategies focus on techniques to enhance database performance. This includes indexing, query tuning, schema design best practices, and efficient use of aggregation pipelines.

Additionally, it covers caching strategies, sharding configurations, and optimizing resource utilization for high-performance applications.

This quiz is designed ideally for those working on high-traffic applications or complex database systems requiring advanced optimization techniques.