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NEW QUESTION 295
You plan to deploy a Microsoft SQL server that will host a data warehouse named DB1. The server will contain four SATA drives configured as a RAID 10 array. You need to minimize write contention on the transaction log when data is being loaded to the database.
Solution: You replace the SATA disks with SSD disks.
Does this meet the goal?
A. Yes
B. No
Answer: B
Explanation:
A data warehouse is too big to store on an SSD. Instead you should place the log file on a separate drive.
https://docs.microsoft.com/en-us/sql/relational-databases/policy-based-management/place-data-and-log-files-on-separate-drives?view=sql-server-2017
NEW QUESTION 296
You plan to deploy a Microsoft SQL server that will host a data warehouse named DB1. The server will contain four SATA drives configured as a RAID 10 array. You need to minimize write contention on the transaction log when data is being loaded to the database.
Solution: You add more data files to DB1.
Does this meet the goal?
A. Yes
B. No
Answer: B
Explanation:
There is no performance gain, in terms of log throughput, from multiple log files. SQL Server does not write log records in parallel to multiple log files. Instead you should place the log file on a separate drive.
https://www.red-gate.com/simple-talk/sql/database-administration/optimizing-transaction-log-throughput/
https://docs.microsoft.com/en-us/sql/relational-databases/policy-based-management/place-data-and-log-files-on-separate-drives?view=sql-server-2017
NEW QUESTION 297
You plan to deploy a Microsoft SQL server that will host a data warehouse named DB1. The server will contain four SATA drives configured as a RAID 10 array. You need to minimize write contention on the transaction log when data is being loaded to the database.
Solution: You configure the server to automatically delete the transaction logs nightly.
Does this meet the goal?
A. Yes
B. No
Answer: B
Explanation:
You should place the log file on a separate drive.
https://www.red-gate.com/simple-talk/sql/database-administration/optimizing-transaction-log-throughput/
https://docs.microsoft.com/en-us/sql/relational-databases/policy-based-management/place-data-and-log-files-on-separate-drives?view=sql-server-2017
NEW QUESTION 298
You have a Microsoft SQL server that has Data Quality Services (DQS) installed. You need to review the completeness and the uniqueness of the data stored in the matching policy.
Solution: You profile the data.
Does this meet the goal?
A. Yes
B. No
Answer: B
Explanation:
Use a matching rule.
https://docs.microsoft.com/en-us/sql/data-quality-services/create-a-matching-policy?view=sql-server-2017
NEW QUESTION 299
You have a Microsoft SQL server that has Data Quality Services (DQS) installed. You need to review the completeness and the uniqueness of the data stored in the matching policy.
Solution: You create a matching rule.
Does this meet the goal?
A. Yes
B. No
Answer: B
Explanation:
Use a matching rule, and use completeness and uniqueness data to determine what weight to give a field in the matching process. If there is a high level of uniqueness in a field, using the field in a matching policy can decrease the matching results, so you may want to set the weight for that field to a relatively small value. If you have a low level of uniqueness for a column, but low completeness, you may not want to include a domain for that column.
https://docs.microsoft.com/en-us/sql/data-quality-services/create-a-matching-policy?view=sql-server-2017
NEW QUESTION 300
You have a Microsoft SQL server that has Data Quality Services (DQS) installed. You need to review the completeness and the uniqueness of the data stored in the matching policy.
Solution: You modify the weight of the domain in the matching rule.
Does this meet the goal?
A. Yes
B. No
Answer: A
Explanation:
Use a matching rule, and use completeness and uniqueness data to determine what weight to give a field in the matching process. If there is a high level of uniqueness in a field, using the field in a matching policy can decrease the matching results, so you may want to set the weight for that field to a relatively small value. If you have a low level of uniqueness for a column, but low completeness, you may not want to include a domain for that column.
https://docs.microsoft.com/en-us/sql/data-quality-services/create-a-matching-policy?view=sql-server-2017
NEW QUESTION 301
You have a server that has Data Quality Services (DQS) installed. You create a matching policy that contains one matching rule. You need to configure the Similarity of Similar percentage that defines a match. Which similarity percentage will always generate a similarity score of 0?
A. 55
B. 80
C. 70
D. 75
Answer: A
Explanation:
The minimum similarity between the values of a field is 60%. If the calculated matching score for a field of two records is less than 60, the similarity score is automatically set to 0.
https://docs.microsoft.com/en-us/sql/data-quality-services/create-a-matching-policy?view=sql-server-2017
NEW QUESTION 302
You need to ensure that a downstream system can consume data in a Master Data Services (MDS) system. What should you configure?
A. a Data Collector
B. a knowledge base
C. a matching policy
D. a subscription view
Answer: D
Explanation:
Subscription views to consume your master data.
https://docs.microsoft.com/en-us/sql/master-data-services/master-data-services-overview-mds?view=sql-server-2017
NEW QUESTION 303
You have a database named DB1 that has change data capture enabled. A Microsoft SQL Server Integration Services (SSIS) job runs once weekly. The job loads changes from DB1 to a data warehouse by querying the change data capture tables. You remove the Integration Services job. You need to stop tracking changes to the database. The solution must remove all the change data capture configurations from DB1. Which stored procedure should you execute?
A. catalog.deploy_project
B. catalog.restore_project
C. catalog.stop_operation
D. sys.sp_cdc_add_job
E. sys.sp_cdc_change_job
F. sys.sp_cdc_disable_db
G. sys.sp_cdc_enable_db
H. sys.sp_cdc_stop_job
Answer: F
Explanation:
sys.sp_cdc_disable_db disables change data capture for all tables in the database currently enabled. All system objects related to change data capture, such as change tables, jobs, stored procedures and functions, are dropped.
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sys-sp-cdc-disable-db-transact-sql?view=sql-server-2017
NEW QUESTION 304
You have a database named DB1 that has change data capture enabled. A Microsoft SQL Server Integration Services (SSIS) job runs once weekly. The job loads changes from DB1 to a data warehouse by querying the change data capture tables. Users report that an application that uses DB1 is suddenly unresponsive. You discover that the Integration Services job causes severe blocking issues in the application. You need to ensure that the users can run the application as quickly as possible. Your SQL Server login is a member of only the ssis_admin database role. Which stored procedure should you execute?
A. catalog.deploy_project
B. catalog.restore_project
C. catalog.stop_operation
D. sys.sp_cdc_add_job
E. sys.sp_cdc_change_job
F. sys.sp_cdc_disable_db
G. sys.sp_cdc_enable_db
H. sys.sp_cdc_stop_job
Answer: E
Explanation:
sys.sp_cdc_change_job modifies the configuration of a change data capture cleanup or capture job in the current database.
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sys-sp-cdc-change-job-transact-sql?view=sql-server-2017
NEW QUESTION 305
……
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