QUESTION 51
You need to recommend a solution that meets the data recovery requirement. What should you include in the recommendation?
A. A database snapshot
B. A transaction log backup
C. Snapshot isolation
D. A differential backup
Answer: A
Case Study 3: A. Datum Case A (Question 52 – Question 60)
General Overview
A. Datum Corporation has offices in Miami and Montreal. The network contains a single Active Directory forest named adatum.com. The offices connect to each other by using a WAN link that has a 5-ms latency. A. Datum standardizes its database platform by using SQL Server 2012 Standard edition.
Databases
Each office contains databases named Sales, Inventory, Customers, Products, Personnel, and Dev. Servers and databases are managed by a team of database administrators. Currently, all of the database administrators have the same level of permissions on all of the servers and all of the databases.
The Customers database contains two tables named Customers and Classifications. The following graphic shows the relevant portions of the tables:
The following table shows the current data in the Classifications table:
The Inventory database is used mainly for reports. The database is recreated every day. A full backup of the database currently takes three hours to complete.
Stored Procedures
A stored procedure named sp1 generates millions of rows of data for multiple reports. Sp1 combines data from five different tables from the Sales and Customers databases in a table named Table1.
After Table1 is created, the reporting process reads data from a table in the Products database and searches for information in Table1 based on input from the Products table. After the process is complete, Table1 is deleted.
A stored procedure named sp2 is used to generate a product list. Sp2 takes several minutes to run due to locks on the tables the procedure accesses. A stored procedure named sp3 is used to update prices. Sp3 is composed of several UPDATE statements called in sequence from within a transaction. Currently, if one of the UPDATE statements fails, the stored procedure continues to execute.
A stored procedure named sp4 calls stored procedures in the Sales, Customers, and Inventory databases. The nested stored procedures read tables from the Sales, Customers, and Inventory databases. Sp4 uses an EXECUTE AS clause.
A stored procedure named sp5 changes data in multiple databases. Security checks are performed each time sp5 accesses a database.
You suspect that the security checks are slowing down the performance of sp5. All stored procedures accessed by user applications call nested stored procedures. The nested stored procedures are never called directly.
Design Requirements
Data Recovery
You must be able to recover data from the Inventory database if a storage failure occurs. You have a Recovery Point Objective (RPO) of one hour. You must be able to recover data from the Dev database if data is lost accidentally. You have a Recovery Point Objective (RPO) of one day.
Classification Changes
You plan to change the way customers are classified. The new classifications will have four levels based on the number of orders. Classifications may be removed or added in the future. Management requests that historical data be maintained for the previous classifications.
Security
A group of junior database administrators must be able to view the server state of the SQL Server instance that hosts the Sales database. The junior database administrators will not have any other administrative rights.
QUESTION 52
You need to recommend a disaster recovery solution for the Dev database. What should you include in the recommendation?
A. The simple recovery model and full backups
B. The full recovery model, full backups, and differential backups
C. The full recovery model, full backups, and transaction log backups
D. The bulk-logged recovery mode and full backups
Answer: A
QUESTION 53
You need to recommend a disaster recovery strategy for the Inventory database. What should you include in the recommendation?
A. SQL Server Failover Clustering
B. AlwaysOn availability groups
C. Peer-to-peer replication
D. Log shipping
Answer: D
QUESTION 54
You need to recommend a solution to minimize the amount of time it takes to execute sp1. With what should you recommend replacing Table1?
A. a temporary table
B. a view
C. a table variable
D. a function
Answer: B
QUESTION 55
You need to recommend a solution to minimize the amount of time it takes to execute sp5. What should you include in the recommendation?
A. Use the EXECUTE AS clause in sp5.
B. Enable cross-database chaining.
C. Use a server role to group all logins.
D. Copy sp5 to each database.
Answer: B
Explanation:
http://msdn.microsoft.com/en-us/library/bb669059%28v=vs.110%29.aspx
QUESTION 56
You need to recommend a change to sp3 to ensure that the procedure completes only if all of the UPDATE statements complete. Which change should you recommend?
A. Set the XACT_ABORT option to on.
B. Set the IMPLICIT_TRANSACTIONS option to off.
C. Set the IMPLICIT_TRANSACTIONS option to on.
D. Set the XACT_ABORT option to off
Answer: A
QUESTION 57
You need to recommend a solution for the error handling of sp3. The solution must minimize the amount of custom code required. What should you recommend?
A. Use the @@ERROR variable in the nested stored procedures.
B. Use a TRY CATCH block in the called stored procedures.
C. Use the @@ERROR variable in the called stored procedures.
D. Use the RAISERROR command in the nested stored procedures.
Answer: B
QUESTION 58
You need to recommend a solution to meet the security requirements of the junior database administrators. What should you include in the recommendation?
A. a database role
B. a server role
C. a shared login
D. a credential
Answer: B
QUESTION 59
You need to recommend a solution for the planned changes to the customer classifications. What should you recommend? (Each correct answer presents part of the solution. Choose all that apply.)
A. Implement change data capture.
B. Add a table to track any changes made to the classification of each customer.
C. Add columns for each classification to the Customers table.
D. Add a row to the Customers table each time a classification changes.
E. Add a column to the Classifications table to track the status of each classification.
Answer: CD
QUESTION 60
You need to recommend a solution that meets the data recovery requirement. What should you include in the recommendation?
A. A database snapshot
B. A transaction log backup
C. Snapshot isolation
D. A differential backup
Answer: D
Explanation:
http://stackoverflow.com/questions/5299812/alternatives-to-snapshot-functionality-sql-server-standard
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