Microsoft 70-761 Online Practice Questions and Exam Preparation

Microsoft 70-761 Online Questions & Answers

• Question 81:

  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 are building a stored procedure that will be used by hundreds of users concurrently.

  You need to store rows that will be processed later by the stored procedure. The object that stores the rows must meet the following requirements:

  

  Be indexable

  

  Contain up-to-date statistics

  

  Be able to scale between 10 and 100,000 rows

  The solution must prevent users from accessing one another's data.

  Solution: You create a table variable in the stored procedure.

  Does this meet the goal?

  A. Yes
  B. No
  B. No

• Question 82:

  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 are creating indexes in a data warehouse.

  You have a dimension table named Table1 that has 10,000 rows. The rows are used to generate several reports.

  The reports join a column that is the primary key.

  The execution plan contains bookmark lookups for Table1.

  You discover that the reports run slower than expected.

  You need to reduce the amount of time it takes to run the reports.

  Solution: You create a hash index on the primary key column.

  Does this meet the goal?

  A. Yes
  B. No
  B. No

  ---

  Reference: https://msdn.microsoft.com/en-us/library/dn133190.aspx

• Question 83:

  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 to that question.

  You have a database for a banking system. The database has two tables named tblDepositAcct and tblLoanAcct that store deposit and loan accounts, respectively. Both tables contain the following columns: You need to determine the total number of customers who have either deposit accounts or loan accounts, but not both types of accounts. Which Transact-SQL statement should you run?

  

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  G. Option G
  H. Option H
  G. Option G

  ---

  SQL Server provides the full outer join operator, FULL OUTER JOIN, which includes all rows from both tables, regardless of whether or not the other table has a matching value.

  Consider a join of the Product table and the SalesOrderDetail table on their ProductID columns. The results show only the Products that have sales orders on them. The ISO FULL OUTER JOIN operator indicates that all rows from both tables are to be included in the results, regardless of whether there is matching data in the tables.

  You can include a WHERE clause with a full outer join to return only the rows where there is no matching data between the tables. The following query returns only those products that have no matching sales orders, as well as those sales orders that are not matched to a product.

  USE AdventureWorks2008R2; GO -- The OUTER keyword following the FULL keyword is optional. SELECT p.Name, sod.SalesOrderID FROM Production.Product p FULL OUTER JOIN Sales.SalesOrderDetail sod ON p.ProductID = sod.ProductID WHERE p.ProductID IS NULL OR sod.ProductID IS NULL ORDER BY p.Name

  References: https://technet.microsoft.com/en-us/library/ms187518(v=sql.105).aspx

• Question 84:

  HOTSPOT

  You have the following Transact-SQL query: What type of functions are used in the query? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

  

  Hot Area:

  

  

  ---

  Box 1: Scalar

  The return value of a function can either be a scalar (single) value or a table.

  Box 2: Table-Valued

  The APPLY operator allows you to invoke a table-valued function for each row returned by an outer table expression of a query. The table-valued function acts as the right input and the outer table expression acts as the left input. The right input is evaluated for each row from the left input and the rows produced are combined for the final output. The list of columns produced by the APPLY operator is the set of columns in the left input followed by the list of columns returned by the right input.

  References:

  https://msdn.microsoft.com/en-us/library/ms186755.aspx

  https://technet.microsoft.com/en-us/library/ms175156(v=sql.105).aspx

• Question 85:

  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 Products by running the following Transact-SQL statement:

  

  You have the following stored procedure:

  

  You need to modify the stored procedure to meet the following new requirements:

  1.

  Insert product records as a single unit of work.

  2.

  Return error number 51000 when a product fails to insert into the database.

  3.

  If a product record insert operation fails, the product information must not be permanently written to the database.

  Solution: You run the following Transact-SQL statement:

  

  Does the solution meet the goal?

  A. Yes
  B. No
  A. Yes

  ---

  If the INSERT INTO statement raises an error, the statement will be caught and an error 51000 will be thrown. In this case no records will have been inserted.

  Note:

  You can implement error handling for the INSERT statement by specifying the statement in a TRY...CATCH construct.

  If an INSERT statement violates a constraint or rule, or if it has a value incompatible with the data type of the column, the statement fails and an error message is returned.

  References: https://msdn.microsoft.com/en-us/library/ms174335.aspx

• Question 86:

  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 create a table named Customers. Data stored in the table must be exchanged between web pages and web servers by using AJAX calls that use REST endpoint.

  You need to return all customer information by using a data exchange format that is text-based and lightweight.

  Which Transact-SQL statement should you run?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  G. Option G
  H. Option H
  C. Option C

  ---

  JSON can be used to pass AJAX updates between the client and the server.

  Export data from SQL Server as JSON, or format query results as JSON, by adding the FOR JSON clause to a SELECT statement.

  When you use the FOR JSON clause, you can specify the structure of the output explicitly, or let the structure of the SELECT statement determine the output.

  References: https://msdn.microsoft.com/en-us/library/dn921882.aspx

• Question 87:

  DRAG DROP

  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 are developing a database to track customer orders. The database contains the following tables: Sales.Customers, Sales.Orders, and Sales.OrderLines. The following table describes the columns in Sales.Customers.

  

  

  The following table describes the columns in Sales.Orders.

  

  The following table describes the columns in Sales.OrderLines.

  You need to create a stored procedure that inserts data into the Customers table. The stored procedure must meet the following requirements: Data changes occur as a single unit of work. Data modifications that are successful are committed and a value of 0 is returned. Data modifications that are unsuccessful are rolled back. The exception severity level is set to 16 and a value of -1 is returned. The stored procedure uses a built-it scalar function to evaluate the current condition of data modifications. The entire unit of work is terminated and rolled back if a run-time error occurs during execution of the stored procedure.

  How should complete the stored procedure definition? To answer, drag the appropriate Transact-SQL segments to the correct targets. Each Transact-SQL segment may be used once, more than once, or not at all. You may need to drag the

  split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  

  ---

  Box 1: XACT_ABORT

  XACT_ABORT specifies whether SQL Server automatically rolls back the current transaction when a Transact-SQL statement raises a run-time error. When SET XACT_ABORT is ON, if a Transact-SQL statement raises a run-timeerror, the

  entire transaction is terminated and rolled back.

  Box 2: COMMIT

  Commit the transaction.

  Box 3: XACT_STATE

  Box 4: ROLLBACK

  Rollback the transaction

  Box 5: THROW

  THROW raises an exception and the severity is set to 16.

  Requirement: Data modifications that are unsuccessful are rolled back. The exception severity level is set to 16 and a value of -1 is returned.

  References:

  https://msdn.microsoft.com/en-us/library/ms188792.aspx

  https://msdn.microsoft.com/en-us/library/ee677615.aspx

• Question 88:

  HOTSPOT

  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 query a database that includes two tables: Project and Task. The Project table includes the following columns:

  

  The Task table includes the following columns:

  

  Users report performance issues when they run the following query:

  

  You need to improve query performance and limit results to projects that specify an end date.

  How should you complete the Transact-SQL statement? To answer, select the appropriate Transact-SQL segments in the answer area.

  Hot Area:

  

  

  ---

  Wildcard character %: Any string of zero or more characters.

  For example: If the LIKE '5%' symbol is specified, the Database Engine searches for the number 5 followed by any string of zero or more characters.

  References: https://docs.microsoft.com/en-us/sql/t-sql/language-elements/like-transact-sql

• Question 89:

  DRAG DROP

  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.

  Start of repeated scenario

  You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.)

  

  You review the Employee table and make the following observations:

  Every record has a value in the ManagerID except for the Chief Executive Officer (CEO).

  The FirstName and MiddleName columns contain null values for some records.

  The valid values for the Title column are Sales Representative manager, and CEO.

  You review the SalesSummary table and make the following observations:

  The ProductCode column contains two parts: The first five digits represent a product code, and the last seven digits represent the unit price. The unit price uses the following pattern: ####.##.

  You observe that for many records, the unit price portion of the ProductCode column contains values.

  The RegionCode column contains NULL for some records.

  Sales data is only recorded for sales representatives.

  You are developing a series of reports and procedures to support the business. Details for each report or procedure follow.

  Sales Summary report: This report aggregates data by year and quarter. The report must resemble the following table.

  

  Sales Manager report: This report lists each sales manager and the total sales amount for all employees that report to the sales manager.

  Sales by Region report: This report lists the total sales amount by employee and by region. The report must include the following columns: EmployeeCode, MiddleName, LastName, RegionCode, and SalesAmount. If MiddleName is NULL, FirstName must be displayed. If both FirstName and MiddleName have null values, the world Unknown must be displayed/ If RegionCode is NULL, the word Unknown must be displayed.

  Report1: This report joins data from SalesSummary with the Employee table and other tables. You plan to create an object to support Report1. The object has the following requirements:

  be joinable with the SELECT statement that supplies data for the report

  can be used multiple times with the SELECT statement for the report

  be usable only with the SELECT statement for the report

  not be saved as a permanent object

  Report2: This report joins data from SalesSummary with the Employee table and other tables.

  You plan to create an object to support Report1. The object has the following requirements: be joinable with the SELECT statement that supplies data for the report

  can be used multiple times for this report and other reports

  accept parameters

  be saved as a permanent object

  Sales Hierarchy report: This report aggregates rows, creates subtotal rows, and super-aggregates rows over the SalesAmount column in a single result-set. The report uses SaleYear, SaleQuarter, and SaleMonth as a hierarchy. The result set must not contain a grand total or cross-tabulation aggregate rows.

  Current Price Stored Procedure: This stored procedure must return the unit price for a product when a product code is supplied. The unit price must include a dollar sign at the beginning. In addition, the unit price must contain a comma every three digits to the left of the decimal point, and must display two digits to the left of the decimal point. The stored procedure must not throw errors, even if the product code contains invalid data.

  End of Repeated Scenario

  You need to create a query to return the data for the Sales Summary report.

  Which three Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the correct order.

  Select and Place:

  

  

  ---

  Use two CTE expressions, one for salesYear and one for SalesQuarter, and combine them with a SELECT statement.

  Note: A common table expression (CTE) can be thought of as a temporary result set that is defined within the execution scope of a single SELECT, INSERT, UPDATE, DELETE, or CREATE VIEW statement. A CTE is similar to a derived table in that it is not stored as an object and lasts only for the duration of the query. References:https://technet.microsoft.com/en-us/library/ms190766(v=sql.105).aspx

• Question 90:

  DRAG DROP

  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 on this series.

  You have a database that tracks orders and deliveries for customers in North America. System versioning is enabled for all tables. The database contains the Sales.Customers, Application.Cities, and Sales.CustomerCategories tables.

  Details for the Sales.Customers table are shown in the following table:

  

  Details for the Application.Cities table are shown in the following table:

  

  Details for the Sales.CustomerCategories table are shown in the following table:

  

  You are creating a report to show when the first customer account was opened in each city. The report contains a line chart with the following characteristics:

  1. The chart contains a data point for each city, with lines connecting the points.

  2. The X axis contains the position that the city occupies relative to other cities.

  3. The Y axis contains the date that the first account in any city was opened. An example chart is shown below for five cities:

  

  During a sales promotion, customers from various cities open new accounts on the same date. You need to write a query that returns the data for the chart.

  How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each Transact-SQL segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  

  ---

  Box 1: RANK() OVER

  RANK returns the rank of each row within the partition of a result set. The rank of a row is one plus thenumber of ranks that come before the row in question.

  ROW_NUMBER and RANK are similar. ROW_NUMBER numbers all rows sequentially (for example 1, 2, 3, 4, 5).

  Incorrect Answers:

  DENSE_RANK returns the rank of rows within the partition of a result set, without any gaps in the ranking. The rank of a row is one plus the number of distinct ranks that come before the row in question.

  Box 2: (PARTITION BY CityID ORDER BY MIN(AccountOpenedDate) DESC)

  Syntax for RANK: RANK ( ) OVER ( [ partition_by_clause ] order_by_clause )

  Box 3: GROUP BY CityID

  References: https://msdn.microsoft.com/en-us/library/ms176102.aspx