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| Section | Weight | Objectives |
|---|---|---|
| Plan and implement data platform resources | 15–20% | - Deploy database resources
|
| Optimize query performance | 15–20% | - Manage workload performance
|
| Implement a secure environment | 20–25% | - Implement compliance and security controls
|
| Monitor and optimize operational resources | 15–20% | - Monitor database performance and health
|
| Plan and configure high availability and disaster recovery | 20–25% | - Configure high availability solutions
|
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問題 #171
You are planning the migration of the SERVER1 databases. The solution must meet the business requirements.
What should you include in the migration plan? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation
Azure Database Migration service
Box 1: Premium 4-VCore
Scenario: Migrate the SERVER1 databases to the Azure SQL Database platform.
Minimize downtime during the migration of the SERVER1 databases.
Premimum 4-vCore is for large or business critical workloads. It supports online migrations, offline migrations, and faster migration speeds.
Reference:
https://azure.microsoft.com/pricing/details/database-migration/
https://docs.microsoft.com/en-us/azure/dms/tutorial-sql-server-azure-sql-online
問題 #172
You need to design an analytical storage solution for the transactional data. The solution must meet the sales transaction dataset requirements.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation:
Box 1: Hash
Scenario:
Ensure that queries joining and filtering sales transaction records based on product ID complete as quickly as possible.
A hash distributed table can deliver the highest query performance for joins and aggregations on large tables.
Box 2: Round-robin
Scenario:
You plan to create a promotional table that will contain a promotion ID. The promotion ID will be associated to a specific product. The product will be identified by a product ID. The table will be approximately 5 GB.
A round-robin table is the most straightforward table to create and delivers fast performance when used as a staging table for loads. These are some scenarios where you should choose Round robin distribution:
* When you cannot identify a single key to distribute your data.
* If your data doesn't frequently join with data from other tables.
* When there are no obvious keys to join.
Reference:
https://rajanieshkaushikk.com/2020/09/09/how-to-choose-right-data-distribution-strategy-for-azure-synapse/
問題 #173
You have an Azure subscription.
You need to deploy an Azure SQL managed instance that meets the following requirements:
* Optimize latency.
* Maximize the memory-to-vCore ratio.
Which service tier and hardware generation should you use? To answer, select the apocopate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation:
Basic Concept: This question tests Azure SQL sizing and purchasing choices, where compute model, scaling behavior, licensing benefits, and cost pattern must be evaluated together.
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 need to deploy an Azure SQL managed instance that meets the following requirements: * Optimize latency.
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.
問題 #174
From a website analytics system, you receive data extracts about user interactions such as downloads, link clicks, form submissions, and video plays.
The data contains the following columns:
You need to design a star schema to support analytical queries of the data. The star schema will contain four tables including a date dimension.
To which table should you add each column? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation
Graphical user interface, application, table Description automatically generated
Box 1: FactEvents
Fact tables store observations or events, and can be sales orders, stock balances, exchange rates, temperatures, etc.
Box 2: DimChannel
Dimension tables describe business entities - the things you model. Entities can include products, people, places, and concepts including time itself. The most consistent table you'll find in a star schema is a date dimension table. A dimension table contains a key column (or columns) that acts as a unique identifier, and descriptive columns.
Box 3: DimEvent
Reference:
https://docs.microsoft.com/en-us/power-bi/guidance/star-schema
問題 #175
You have an instance of SQL Server on Azure Virtual Machines named VM1.
You need to implement a disaster recovery solution that meets the following requirements:
- Returns the solution to an operational state within 15 minutes of a
failure
- Can perform disaster recovery testing in an isolated environment
- Minimizes administrative effort
What should you include in the solution?
答案：D
解題說明：
Replication with Azure Site Recover:
- RTO is typically less than 15 minutes.
- RPO: One hour for application consistency and five minutes for crash consistency.
Always On availability group RPO: Because replication to the secondary replica is asynchronous, there's some data loss.
Reference:
https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-sql
問題 #176
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