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.an Activity Monitor session in Microsoft SQL Management Studio.
• B.a System Monitor report
• C.a sys.dm_exec_session_wait_stats dynamic management view query
• D.a sys.dm_exec_query_stats dynamic management view query

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You have a database named MyDb. You run the following Transact-SQL statements:

A value of 1 in the IsActive column indicates that a user is active.
You need to create a count for active users in each role. If a role has no active users. You must display a zero as the active users count.
Which Transact-SQL statement should you run?

• A.SELECT R.RoleName, U.ActiveUserCount FROM tblRoles R CROSS JOIN(SELECT RoleId, COUNT(*) AS ActiveUserCountFROM tblUsers WHERE IsActive = 1 GROUP BY R.RoleId) U
• B.SELECT R.RoleName, COUNT(*) AS ActiveUserCount FROM tblRoles RCROSS JOIN (SELECT UserId, RoleId FROM tblUsers WHERE IsActive = 1) UWHERE U.RoleId = R.RoleIdGROUP BY
• C.SELECT R.RoleName, ISNULL (U.ActiveUserCount,0) AS ActiveUserCountFROM tblRoles R LEFT JOIN (SELECT RoleId, COUNT(*) AS ActiveUserCountFROM tblUsers WHERE IsActive = 1 GROUP BY R.RoleId) U
• D.SELECT R.RoleName, COUNT(*) AS ActiveUserCount FROM tblRoles RLEFT JOIN (SELECT UserId, RoleId FROM tblUsers WHERE IsActive = 1) UON U.RoleId = R.RoleIdGROUP BY
• E.RoleId, R.RoleName
• F.RoleId, R.RoleName

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You work for an organization that monitors seismic activity around volcanos. You have a table named GroundSensors. The table stored data collected from seismic sensors. It includes the columns describes in the following table:

The database also contains a scalar value function named NearestMountain that accepts a parameter of type geography and returns the name of the mountain that is nearest to the sensor.
You need to create a query that shows the average of the normalized readings from the sensors for each mountain. The query must meet the following requirements:
* Return the average normalized readings named AverageReading.
* Return the nearest mountain name named Mountain.
* Do not return any other columns.
* Exclude sensors for which no normalized reading exists.
Construct the query using the following guidelines:
* Use one part names to reference tables, columns and functions.
* Do not use parentheses unless required.
* Define column headings using the AS keyword.
* Do not surround object names with square brackets.

Part of the correct Transact-SQL has been provided in the answer area below. Enter the code in the answer area that resolves the problem and meets the stated goals or requirements. You can add code within the code that has been provided as well as below it.

Use the Check Syntax button to verify your work. Any syntax or spelling errors will be reported by line and character position.

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Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Customer by running the following Transact-SQL statement:

You must insert the following data into the Customer table:

You need to ensure that both records are inserted or neither record is inserted.
Solution: You run the following Transact-SQL statement:

Does the solution meet the goal?

• A.Yes
• B.No

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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 is independent of the other questions in this series. Information and details provided in a question apply only to that question.
You have a database that contains several connected tables. The tables contain sales data for customers in the United States only.
You have the following partial query for the database. (Line numbers are included for reference only.)

You need to complete the query to generate the output shown in the following table.

Which statement clause should you add at line 3?

• A.GROUP BY
• B.MERGE
• C.GROUP BY ROLLUP
• D.LEFT JOIN
• E.GROUP BY CUBE
• F.CROSS JOIN
• G.PIVOT
• H.UNPIVOT

Correct Answer: E

Explanation
Example of GROUP BY CUBE result set:
In the following example, the CUBE operator returns a result set that has one grouping for all possible combinations of columns in the CUBE list and a grand total grouping.

References: https://technet.microsoft.com/en-us/library/bb522495(v=sql.105).aspx

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