Download Microsoft.70-764.TestKing.2018-06-17.204q.tqb
| Vendor: | Microsoft |
| Exam Code: | 70-764 |
| Exam Name: | Administering a SQL Database Infrastructure |
| Date: | Jun 17, 2018 |
| File Size: | 3 MB |
Demo Questions
Question 1
You must encrypt the backup files to meet regulatory compliance requirements.
The encryption strategy must minimize changes to the databases and to the applications.
You need to recommend an isolation level for usp_UpdateOrderDetails.
Which isolation level should recommend?
- Read committed
- Repeatable read
- Read uncommitted
- Serializable
Correct answer: B
Explanation:
- Scenario: Databasel will also contain a stored procedure named usp_UpdateOrderDetails. The stored procedure is used to update order information. The stored procedure queries the Orders table twice each time the procedure executes. The rows returned from the first query must be returned on the second query unchanged along with any rows added to the table between the two read operations.- REPEATABLE READ Specifies that statements cannot read data that has been modified but not yet committed by other transactions and that no other transactions can modify data that has been read by the current transaction until the current transaction completes. - Scenario: Databasel will also contain a stored procedure named usp_UpdateOrderDetails. The stored procedure is used to update order information. The stored procedure queries the Orders table twice each time the procedure executes. The rows returned from the first query must be returned on the second query unchanged along with any rows added to the table between the two read operations.
- REPEATABLE READ Specifies that statements cannot read data that has been modified but not yet committed by other transactions and that no other transactions can modify data that has been read by the current transaction until the current transaction completes.
Question 2
You must encrypt the backup files to meet regulatory compliance requirements.
The encryption strategy must minimize changes to the databases and to the applications.
You need to recommend a solution for the deployment of SQL Server 2014. The solution must meet the business requirements. What should you include in the recommendation?
- Create a new instance of SQL Server 2014 on the server that hosts the SQL Server 2008 instance.
- Upgrade the existing SQL Server 2008 instance to SQL Server 2014.
- Deploy two servers that have SQL Server 2014 installed and implement Failover Clustering.
- Deploy two servers that have SQL Server 2014 installed and implement database mirroring.
Correct answer: C
Explanation:
Scenario: The databases must be available if the SQL Server service fails. Scenario: The databases must be available if the SQL Server service fails.
Question 3
You must encrypt the backup files to meet regulatory compliance requirements.
The encryption strategy must minimize changes to the databases and to the applications.
You need to recommend a solution to improve the performance of usp.UpdateInventory.
The solution must minimize the amount of development effort. What should you include in the recommendation?
- A table variable
- A common table expression
- A subquery
- A cursor
Correct answer: A
Explanation:
- Scenario: Database2 will contain a stored procedure named usp_UpdateInventory. Usp_UpdateInventory will manipulate a table that contains a self-join that has an unlimited number of hierarchies.- A table variable can be very useful to store temporary data and return the data in the table format. - Example: The following example uses a self-join to find the products that are supplied by more than one vendor. Because this query involves a join of the ProductVendor table with itself, the ProductVendor table appears in two roles. To distinguish these roles, you must give the ProductVendor table two different aliases (pv1 and pv2) in the FROM clause. These aliases are used to qualify the column names in the rest of the query. This is an example of the self-join Transact-SQL statement: Incorrect Answers:B: Using a CTE offers the advantages of improved readability and ease in maintenance of complex queries. The query can be divided into separate, simple, logical building blocks. These simple blocks can then be used to build more complex, interim CTEs until the final result set is generated - Scenario: Database2 will contain a stored procedure named usp_UpdateInventory. Usp_UpdateInventory will manipulate a table that contains a self-join that has an unlimited number of hierarchies.
- A table variable can be very useful to store temporary data and return the data in the table format.
- Example: The following example uses a self-join to find the products that are supplied by more than one vendor. Because this query involves a join of the ProductVendor table with itself, the ProductVendor table appears in two roles. To distinguish these roles, you must give the ProductVendor table two different aliases (pv1 and pv2) in the FROM clause. These aliases are used to qualify the column names in the rest of the query. This is an example of the self-join Transact-SQL statement:
Incorrect Answers:
B: Using a CTE offers the advantages of improved readability and ease in maintenance of complex queries. The query can be divided into separate, simple, logical building blocks. These simple blocks can then be used to build more complex, interim CTEs until the final result set is generated
