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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Implement a secure environment | 20–25% | - Implement compliance and security controls
|
| Topic 2: Plan and implement data platform resources | 15–20% | - Deploy database resources
|
| Topic 3: Monitor and optimize operational resources | 15–20% | - Optimize resource consumption
|
| Topic 4: Plan and configure high availability and disaster recovery | 20–25% | - Implement backup and restore
|
| Topic 5: Optimize query performance | 15–20% | - Manage workload performance
|
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NEW QUESTION # 226
You have an Azure SQL database named DB1 that contains a table named Table 1.
You run a query to load data into Table1.
The performance metrics of Table1 during the load operation are shown in the following exhibit.
Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic. NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
NEW QUESTION # 227
You configure backup for an Azure SQL database as shown in the following exhibit.
Use the drop-down menus to select the answer choice the completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 228
You have an Azure Synapse Analytics dedicated SQL pool.
You runPDW_SHOWSPACEUSED('dbo.FactInternetSales');and get the results shown in the following table.
Which statement accurately describes thedbo.FactInternetSalestable?
Answer: B
Explanation:
Explanation
The rows per distribution can vary up to 10% without a noticeable impact on performance. Here the distribution varies more than 10%. It is skewed.
Note: SHOWSPACEUSED displays the number of rows, disk space reserved, and disk space used for a specific table, or for all tables in a Azure Synapse Analytics or Parallel Data Warehouse database.
This is a very quick and simple way to see the number of table rows that are stored in each of the 60 distributions of your database. Remember that for the most balanced performance, the rows in your distributed table should be spread evenly across all the distributions.
ROUND_ROBIN distributed tables should not be skewed. Data is distributed evenly across the nodes by design.
Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-distribu
https://github.com/rgl/azure-content/blob/master/articles/sql-data-warehouse/sql-data-warehouse-manage-distrib
NEW QUESTION # 229
Hotspot Question
You have an Azure subscription that contains an Azure SQL database named DB1.
You execute the following T-SQL statements against DB1.
For each of the following statements, select Yes if the statement is true, otherwise select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
The NCHAR(10) data type is a fixed-length Unicode character data type. Each character in NCHAR takes 2 bytes because it uses UTF-16 encoding. Therefore, NCHAR(10) will always occupy 20 bytes on disk (2 bytes per character for 10 characters), not 10 bytes. However, the statement is asking if each field occupies 10 bytes, which is misleading; it should be 20 bytes.
The statement "ALTER TABLE table1 REBUILD WITH (DATA_COMPRESSION = ROW);" specifies row-level compression, not dictionary compression. Row compression reduces the size of the data by storing fixed-length data types in variable-length storage format and by reducing metadata overhead. Dictionary compression is a feature of page compression, not row compression.
Column1 (TINYINT): Supports compression. Row compression can store this as a smaller size if possible. Column2 (VARCHAR(255)): Supports compression. Row compression can store only the used length of the string. Column4 (BINARY(50)): Supports compression. Row compression can store binary data more efficiently by removing unnecessary padding.
NEW QUESTION # 230
You have an Azure SQL database.
You run the following PowerShell script.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Reference:
https://docs.microsoft.com/en-us/powershell/module/az.sql/set-azsqldatabasebackupshorttermretentionpolicy?
view=azps-7.2.0
https://docs.microsoft.com/en-us/powershell/module/az.sql/set-azsqldatabasebackuplongtermretentionpolicy?
view=azps-7.2.0
Basic Concept: This question tests plan and configure a high availability and disaster recovery (ha/dr) environment in the DP-300 exam context. The correct choice is determined by the exact service boundary and operational requirement stated in the scenario.
Why the selected answer is Correct: The selected values fit this scenario because they apply the required Azure SQL configuration at the correct scope and sequence: You have an Azure SQL database.
Why the alternate choices are Wrong: The alternate selections apply to different administrative stages or different scopes. In a hotspot or drag-drop task, order and scope are part of the answer, so a technically valid Azure feature can still be wrong if it is placed in the wrong step.
NEW QUESTION # 231
......
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