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Welcome to the Performance Tuning and Optimization MCQs Page

Dive deep into the fascinating world of Performance Tuning and Optimization with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Performance Tuning and Optimization, a crucial aspect of SQL Server. In this section, you will encounter a diverse range of MCQs that cover various aspects of Performance Tuning and Optimization, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within SQL Server.

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Check out the MCQs below to embark on an enriching journey through Performance Tuning and Optimization. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of SQL Server.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Performance Tuning and Optimization. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Performance Tuning and Optimization MCQs | Page 10 of 12

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Q91.
Which of the following compression type is supported by SQL Server 2014?

a.

Row

b.

Column

c.

Both row and column

d.

None of the mentioned

Discuss
Answer: (c).Both row and column
Q92.
Point out the correct statement.

a.

The details of data compression are subject to change without notice in service packs or subsequent releases

b.

Compression is not available for system tables

c.

If you specify a list of partitions or a partition that is out of range, an error will be generated

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q93.
Use _________ data compression to compress columnstore data with archival compression.

a.

COLUMNSTOREARCHIVE

b.

COLUMNSTORE_ARCHIVE

c.

COLUMNSTORE

d.

All of the mentioned

Discuss
Answer: (b).COLUMNSTORE_ARCHIVE
Q94.
To remove archival compression and restore the data to columnstore compression _____________

a.

Use ALTER TABLE

b.

Use ALTER COLUMN

c.

Use ALTER DATABASE

d.

All of the mentioned

Discuss
Answer: (a).Use ALTER TABLE
Q95.
Point out the wrong statement.

a.

You can enable or disable ROW or PAGE compression in online state only

b.

When you are compressing indexes, leaf-level pages can be compressed with both row and page compression

c.

Non–leaf-level pages do not receive page compression

d.

None of the mentioned

Discuss
Answer: (a).You can enable or disable ROW or PAGE compression in online state only
Q96.
The data_compression and data_compression_desc columns include ___________

a.

COLUMNSTOREARCHIVE

b.

COLUMNSTORE_ARCH

c.

COLUMNSTORE

d.

None of the mentioned

Discuss
Answer: (c).COLUMNSTORE
Q97.
Which of the following code is used to enable compression on a table?

a.

EXEC sp_estimate_compression_savings 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;

ALTER TABLE Production.TransactionHistory REBUILD PARTITION = ALL
WITH (DATA_COMPRESSION = ROW);

b.

EXEC sp_estimate_compression_savings 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;

ALTER TABLE Production.TransactionHistory REBUILD PARTITION = ALL
WITH (DATA_COMPRESSION = ROW);

c.

EXEC sp_estimate_compression_savings 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;

ALTER TABLE Production.TransactionHistory BUILD PARTITION = ALL
WITH (DATA_COMPRESSION = ROW);

d.

EXEC sp_estimate_compression 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;

ALTER TABLE Production.TransactionHistory REBUILD PARTITION = ALL
WITH (DATA_COMPRESSION = ROW);

Discuss
Answer: (b).EXEC sp_estimate_compression_savings 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;

ALTER TABLE Production.TransactionHistory REBUILD PARTITION = ALL
WITH (DATA_COMPRESSION = ROW);
Q98.
What is the purpose of schema name in the following code syntax? 
sp_estimate_data_compression_savings 
     [ @schema_name = ] 'schema_name'  
   , [ @object_name = ] 'object_name' 
   , [@index_id = ] index_id 
   , [@partition_number = ] partition_number 
   , [@data_compression = ] 'data_compression' 
[;]

a.

Name of the table

b.

Name of the database schema

c.

Name of the indexed view

d.

All of the mentioned

Discuss
Answer: (b).Name of the database schema
Q99.
sp_estimate_data_compression_savings requires ______ permission on the table.

a.

UPDATE

b.

SELECT

c.

DELETE

d.

None of the mentioned

Discuss
Answer: (b).SELECT
Q100.
Which of the following query estimates the size of the Production.WorkOrderRouting table if it is compressed by using ROW compression?

a.

EXEC sp_estimate_data_compression_savings ‘Production’, ‘WorkOrderRouting’, NULL, NULL, ‘ROW’ ;

b.

EXEC sp_estimate_data_compression_savings ‘Production’, ‘WorkOrderRouting’, NULL, 1, ‘ROW’ ;

c.

EXEC sp_estimate_data_compression_savings ‘Production’, ‘WorkOrderRouting’, 1, NULL, ‘ROW’ ;

d.

EXEC sp_estimate_data_compression_savings ‘Production’, ‘WorkOrderRouting’, NULL, NULL, ‘COLUMN’ ;

Discuss
Answer: (a).EXEC sp_estimate_data_compression_savings ‘Production’, ‘WorkOrderRouting’, NULL, NULL, ‘ROW’ ;
Page 10 of 12

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