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Q1. Note: This question is part of a series of questions that use the same or similar answer choices. An Answer choice may be correct for more than one question in the series. Each question independent of the other questions in this series. Information and details provided in a question apply only to that question.

You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three Microsoft SQL Server instances. There are many SQL jobs that run during off-peak hours.

You must monitor and optimize the SQL Server to maximize throughput, response time, and overall SQL performance.

You need to identify previous situations where a modification has prevented queries from selecting data in tables.

What should you do?

A. Create a sys.dm_os_waiting_tasks query.

B. Create a sys.dm_exec_sessions query.

C. Create a Performance Monitor Data Collector Set.

D. Create a sys.dm_os_memory_objects query.

E. Create a sp_configure ‘max server memory’query.

F. Create a SQL Profiler trace.

G. Create a sys.dm_os_wait_stats query.

H. Create an Extended Event.

Answer: G

Explanation:

sys.dm_os_wait_stats returns information about all the waits encountered by threads that executed. You can use this aggregated view to diagnose performance issues with SQL Server and also with specific queries and batches.


Q2. Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.

Your company has employees in different regions around the world.

You need to create a database table that stores the following employee attendance information:

- Employee ID

- date and time employee checked in to work

- date and time employee checked out of work

Date and time information must be time zone aware and must not store fractional seconds. Solution: You run the following Transact-SQL statement:

Does the solution meet the goal?

A. Yes

B. No

Answer: B

Explanation:

Datetimeoffset, not datetimeofset, defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hourclock.

Syntaxis: datetimeoffset [ (fractional seconds precision) ]

For the use "datetimeoffset", the Fractional seconds precision is 7. References:https://msdn.microsoft.com/en-us/library/bb630289.aspx


Q3. Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.

You need to create a stored procedure that updates the Customer, CustomerInfo, OrderHeader, and OrderDetails tables in order.

You need to ensure that the stored procedure:

Solution: You create a stored procedure that includes the following Transact-SQL segment:

Does the solution meet the goal?

A. Yes

B. No

Answer: B

Explanation:

References: http://stackoverflow.com/questions/11444923/stored-procedure-to-update- multiple-tables


Q4. You are experiencing performance issues with the database server.

You need to evaluate schema locking issues, plan cache memory pressure points, and backup I/O problems.

What should you create?

A. a System Monitor report

B. a sys.dm_tran_database_transaction dynamic management view query

C. an Extended Events session that uses Query Editor

D. an Activity Monitor session in Microsoft SQL Management Studio.

Answer: D

Explanation:

References: https://msdn.microsoft.com/en-us/library/hh212951.aspx


Q5. You are experiencing performance issues with the database server.

You need to evaluate schema locking issues, plan cache memory pressure points, and backup I/O problems.

What should you create?

A. a System Monitor report

B. a sys.dm_exec_query_stats dynamic management view query

C. a sys.dm_exec_session_wait_stats dynamicmanagement view query

D. an Activity Monitor session in Microsoft SQL Management Studio.

Answer: C

Explanation:

sys.dm_exec_session_wait_stats returns information about all the waits encountered by threads that executed for each session. You can use this view to diagnose performance issues with the SQL Server session and also with specific queries and batches.

Note: SQL Server wait stats are, at their highest conceptual level, grouped into two broad categories: signal waits and resource waits. A signal wait is accumulated by processes running on SQL Server which are waiting for a CPU to become available (so called because the process has “signaled” that it is ready for processing). A resource wait is accumulated by processes running on SQL Server which are waiting fora specific resource to become available, such as waiting for the release of a lock on a specific record.


Q6. HOTSPOT

Background

You have a database named HR1 that includes a table named Employee.

You have several read-only, historical reports that contain regularly changing totals. The reports use multiple queries to estimate payroll expenses. The queries run concurrently. Users report that the payroll estimate reports do not always run. You must monitor the database to identify issues that prevent the reports from running.

You plan to deploy the application to a database server that supports other applications. You must minimize the amount of storage that the database requires.

Employee Table

You use the following Transact-SQL statements to create, configure, and populate the Employee table:

Application

You have an application that updates the Employees table. The application calls the following stored procedures simultaneously and asynchronously:

The application uses views to control access to data. Views must meet the following requirements:

Exhibit

Users must only be able to modify data in the Employee table by using the vwEmployee view. You must prevent users from viewing the view definition in catalog views.

You need to identify the view attribute to use when creating vwEmployee. In the table below, identify the attributes that you must use.

NOTE: Make only one selection in each column.

Answer:

Explanation:

References: https://msdn.microsoft.com/en-us/library/ms187956.aspx


Q7. Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.

You are developing a new application that uses a stored procedure. The stored procedure inserts thousands of records as a single batch into the Employees table.

Users report that the application response time has worsened since the stored procedure was updated. You examine disk-related performance counters for the Microsoft SQL Server instance and observe several high values that include a disk performance issue. You examine wait statistics and observe an unusually high WRITELOG value.

You need to improve the application response time.

Solution: You update the application to use implicit transactions when connecting to the database.

Does the solution meet the goal?

A. Yes

B. No

Answer: B

Explanation:

References: http://sqltouch.blogspot.co.za/2013/05/writelog-waittype-implicit-vs- explicit.html


Q8. You have a database that is experiencing deadlock issues when users run queries. You need to ensure that all deadlocks are recorded in XML format.

What should you do?

A. Create a Microsoft SQL Server Integration Services package that uses sys.dm_tran_locks.

B. Enable trace flag 1224 by using the Database Cpmsistency Checker(BDCC).

C. Enable trace flag 1222 in thestartup options for Microsoft SQL Server.

D. Use the Microsoft SQL Server Profiler Lock:Deadlock event class.

Answer: C

Explanation:

When deadlocks occur, trace flag 1204 and trace flag 1222 return information that is capturedin the SQL Server error log.Trace flag 1204 reports deadlock information formatted by each node involved in the deadlock. Trace flag 1222 formats deadlock information, first by processes and then by resources.

The output format for Trace Flag 1222 only returns information in an XML-like format. References:https://technet.microsoft.com/en-us/library/ms178104(v=sql.105).aspx


Q9. Note: This question is part of a series of questions that use the same scenario. For your convenience, the scenario is repeated in each question. Each question presents a different goal and answer choices, but the text of the scenario is exactly the same in each question in this series.

You have a database named DB1 that contains the following tables: Customer, CustomerToAccountBridge, and CustomerDetails. The three tables are part of the Sales schema. The database also contains a schema named Website. You create the Customer table by running the following Transact-SQL statement:

The value of the CustomerStatus column is equal to one for active customers. The value of the Account1Status and Account2Status columns are equal to one for active accounts. The following table displays selected columns and rows from the Customer table.

You plan to create a view named Website.Customer and a view named Sales.FemaleCustomers.

Website.Customer must meet the following requirements:

1. Allow users access to the CustomerName and CustomerNumber columns for active customers.

2. Allow changes to the columns that the view references. Modified data must be visible through the view.

3. Prevent the view from being published as part of Microsoft SQL Server replication. Sales.Female.Customers must meet the following requirements:

1. Allow users access to the CustomerName, Address, City, State and PostalCode columns.

2. Prevent changes to the columns that the view references.

3. Only allow updates through the views that adhere to the view filter.

You have the following stored procedures: spDeleteCustAcctRelationship and spUpdateCustomerSummary. The spUpdateCustomerSummary stored procedure was created by running the following Transacr-SQL statement:

You run the uspUpdateCustomerSummary stored procedure to make changes to customer account summaries. Other stored procedures call the spDeleteCustAcctRelationship to delete records from the CustomerToAccountBridge table.

When you start uspUpdateCustomerSummary, there are no active transactions. The procedure fails at the second update statement due to a CHECK constraint violation on the TotalDepositAccountCount column.

What is the impact of the stored procedure on the CustomerDetails table?

A. The value of the TotalAccountCount column decreased.

B. The value of the TotalDepositAccountCount column is decreased.

C. The statement that modifies TotalDepositAccountCount is excluded from the transaction.

D. The value of the TotalAccountCount column is not changed.

Answer: D


Q10. DRAG DROP

You have a database named MyDatabase. You must monitor all the execution plans in XML format by using Microsoft SQL Trace. The trace must meet the following requirements:

- Capture execution plans only for queries that run the MyDatabase database.

- Filter out plans with event duration of less than or equal to 100 microseconds.

- Save trace results to a disk on the server. You need to create the trace.

In which order should you arrange the Transact-SQL segments to develop the solution? To answer, move all Transact-SQL segments to the answer area and arrange them in the correct order.

NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.

DECLARE @traceEventId int = 122;

DECLARE @traceColumnIdForTextData int = 1; DECLARE @durationFilter bigint = 100 DECLARE @databaseID int;

SELECT @databaseId = DB_ID(‘MyDatabase’);

Answer:

Explanation:

The following system stored procedures are used to define and manage traces:

* sp_trace_create is used to define a trace and specify an output file location as well asother options that I’ll cover in the coming pages. This stored procedure returns a handle to the created trace, in the form of an integer trace ID.

* sp_trace_setevent is used to add event/column combinations to traces based on the trace ID, as well as toremove them, if necessary, from traces in which they have already been defined.

* sp_trace_setfilter is used to define event filters based on trace columns.

* sp_trace_setstatus is called to turn on a trace, to stop a trace, and to delete a trace definitiononce you’re done with it. Traces can be started and stopped multiple times over their lifespan.

References:https://msdn.microsoft.com/en-us/library/cc293613.aspx


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