Top 10 braindumps 70-762 for consumer (1 to 10)

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Q1. HOTSPOT

You have a database named Sales.

You need to create a table named Customer that includes the columns described in the following table:

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

Answer:

Explanation:

Box 1: MASKED WITH (FUNCTION ='default()')

TheDefualt masking method provides full masking according to the data types of the designated fields.

Example column definition syntax: Phone# varchar(12) MASKED WITH (FUNCTION =

'default()') NULL

Box 2: MASKED WITH (FUNCTION ='partial(3,"XXXXXX",0)')

The Custom String Masking method exposes the first and last letters and adds a custom padding string in the middle. prefix,[padding],suffix

examples:

PhoneNumber varchar(10) MASKED WITH (FUNCTION = 'partial(5,"XXXXXXX",0)') Box 3: MASKED WITH (FUNCTION ='email()')

The Email masking method which exposes the first letter of an email address and the constant suffix ".com", in the form of an email address. .aXXX@XXXX.com.

Example definition syntax: Email varchar(100) MASKEDWITH (FUNCTION = 'email()') NULL

References:https://msdn.microsoft.com/en-us/library/mt130841.aspx

Q2. You have a view that includes an aggregate.

You must be able to change the values of columns in the view. The changes must be reflected in the tables that the view uses.

You need to ensure that you can update the view. What should you create?

A. table-valued function

B. a schema-bound view

C. a partitioned view

D. a DML trigger

Answer: B

Explanation:

When you use the SchemaBinding keyword while creating a view or function you bindthe structure of any underlying tables or views. It means that as long as that schemabound object exists as a schemabound object (ie you don’t remove schemabinding) you are limited in changes that can be made to the tables or views that it refers to.

References:https://sqlstudies.com/2014/08/06/schemabinding-what-why/

Q3. DRAG DROP

You are monitoring a Microsoft Azure SQL Database. The database is experiencing high CPU consumption.

You need to determine which query uses the most cumulative CPU.

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 one or not at all. You may need to drag the split bar between panes or scroll to view content.

Answer:

Explanation:

Box 1: sys.dm_exec_query_stats

sys.dm_exec_query_stats returns aggregateperformance statistics for cached query plans in SQL Server.

Box 2: highest_cpu_queries.total_worker_time DESC Sort ontotal_worker_time column

Example: The following example returns information about the top five queries ranked by average CPU time.

Thisexample aggregates the queries according to their query hash so that logically equivalentqueries are grouped by their cumulative resource consumption.

USE AdventureWorks2012; GO

SELECT TOP 5 query_stats.query_hash AS "Query Hash", SUM(query_stats.total_worker_time) / SUM(query_stats.execution_count) AS "Avg CPU Time",

MIN(query_stats.statement_text) AS "Statement Text" FROM

(SELECT QS.*,

SUBSTRING(ST.text, (QS.statement_start_offset/2) + 1,

((CASE statement_end_offset

WHEN -1 THEN DATALENGTH(ST.text)

ELSE QS.statement_end_offset END

– QS.statement_start_offset)/2) + 1) AS statement_text FROM sys.dm_exec_query_stats AS QS

CROSS APPLY sys.dm_exec_sql_text(QS.sql_handle)as ST) as query_stats GROUP BY query_stats.query_hash

ORDER BY 2 DESC;

References: https://msdn.microsoft.com/en-us/library/ms189741.aspx

Q4. 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: A

Explanation:

Datetimeoffset defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hour clock.

Syntaxis: datetimeoffset [ (fractional seconds precision) ]

Forthe use"datetimeoffset(0)", the Fractional seconds precision is 0, which is required here. References:https://msdn.microsoft.com/en-us/library/bb630289.aspx

Q5. 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 have a database named Sales that contains the following database tables: Customer, Order, and Products. The Products table and the Order table are shown in the following diagram.

The customer table includes a column that stores the data for the last order that the customer placed.

You plan to create a table named Leads. The Leads table is expected to contain approximately 20,000 records. Storage requirements for the Leads table must be

minimized.

The Leads table must include the columns described in the following table.

The data types chosen must consume the least amount of storage possible. You need to select the appropriate data types for the Leads table.

In the table below, identify the data type that must be used for each table column. NOTE: Make only one selection in each column.

Answer:

Explanation:

Bit is aTransact-SQL integer data type that can take a value of 1, 0, or NULL.

Smallint is aTransact-SQL integer data type that can take a value in the range from -32,768 to 32,767.

int, bigint, smallint, and tinyint (Transact-SQL) Exact-number data types that use integer data.

References:https://msdn.microsoft.com/en-us/library/ms187745.aspx https://msdn.microsoft.com/en-us/library/ms177603.aspx

Q6. 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 that contains the following tables: BlogCategory, BlogEntry, ProductReview, Product, and SalesPerson. The tables were created using the following Transact SQL statements:

You must modify the ProductReview Table to meet the following requirements:

1. The table must reference the ProductID column in the Product table

2. Existing records in the ProductReview table must not be validated with the Product table.

3. Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.

4. Changes to records in the Product table must propagate to the ProductReview table.

You also have the following database tables: Order, ProductTypes, and SalesHistory, The transact-SQL statements for these tables are not available.

You must modify the Orders table to meet the following requirements:

1. Create new rows in the table without granting INSERT permissions to the table.

2. Notify the sales person who places an order whether or not the order was completed.

You must add the following constraints to the SalesHistory table:

– a constraint on the SaleID column that allows the field to be used as a record identifier

– a constant that uses the ProductID column to reference the Product column of the ProductTypes table

– a constraint on the CategoryID column that allows one row with a null value in the column

– a constraint that limits the SalePrice column to values greater than four

Finance department users must be able to retrieve data from the SalesHistory table for sales persons where the value of the SalesYTD column is above a certain threshold.

You plan to create a memory-optimized table named SalesOrder. The table must meet the following requirements:

– The table must hold 10 million unique sales orders.

– The table must use checkpoints to minimize I/O operations and must not use transaction logging.

– Data loss is acceptable.

Performance for queries against the SalesOrder table that use Where clauses with exact equality operations must be optimized.

You need to enable referential integrity for the ProductReview table.

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

Select two alternatives.

A. For the first selection select: WITH CHECK

B. For the first selection select: WITH NOCHECK

C. For the second selection select: ON DELETE NO ACTION ON UPDATE CASCADE

D. For the second selection select: ON DELETECASCADE ON UPDATE CASCADE

E. For the second selection select: ON DELETE NO ACTION ON UPDATE NO ACTION

F. For the second selection select: ON DELETE CASCADE ON UPDATE NO ACTION

Answer: B,C

Explanation:

B: We should use WITH NOCHECK as existing records inthe ProductReview table must not be validated with the Product table.

C: Deletes should not be allowed, so we use ON DELETE NO ACTION. Updates should be allowed, so we use ON DELETE NO CASCADE

NO ACTION: the Database Engine raises an error, and the updateaction on the row in the parent table is rolled back.

CASCADE: corresponding rows are updated in the referencing table when that row is updated in the parent table.

Note: ON DELETE { NO ACTION | CASCADE | SET NULL | SET DEFAULT }

Specifieswhat action happens to rows in the table that is altered, if those rows have a referential relationship and the referenced row is deleted from the parent table. The default is NO ACTION.

ON UPDATE { NO ACTION | CASCADE | SET NULL | SET DEFAULT }

Specifieswhat action happens to rows in the table altered when those rows have a referential relationship and the referenced row is updated in the parent table. The default is NO ACTION.

Note: You must modify the ProductReview Table to meet the following requirements:

1. The table must reference the ProductID column in the Product table

2. Existing records in the ProductReview table must not be validated with the Product table.

3. Deleting records in the Product table must not be allowed if records are referencedby theProductReview table.

4. Changes to records in the Product table must propagate to the ProductReview table.

References:https://msdn.microsoft.com/en-us/library/ms190273.aspx https://msdn.microsoft.com/en-us/library/ms188066.aspx

Q7. Note: The 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 question in the series. Information and details provided in a question apply only to that question.

You have a database named DB1. The database does not use a memory-optimized filegroup. The database contains a table named Table1. The table must support the following workloads:

You need to add the most efficient index to support the new OLTP workload, while not deteriorating the existing Reporting query performance.

What should you do?

A. Create a clustered index on the table.

B. Create a nonclustered index on the table.

C. Create a nonclustered filtered index on the table.

D. Create a clusteredcolumnstore index on the table.

E. Create a nonclustered columnstore index on the table.

F. Create a hash index on the table.

Answer: C

Explanation:

A filtered index is an optimized nonclustered index, especially suited to cover queries that

select from awell-defined subset of data. It uses a filter predicate to index a portion of rows in the table. A well-designed filtered index can improve query performance, reduce index maintenance costs, and reduce index storage costs compared with full-table indexes.

References:https://technet.microsoft.com/en-us/library/cc280372(v=sql.105).aspx

Q8. DRAG DROP

Case Study 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

Both of the stored procedures experience blocking issues. UspB must not abort if UspA commits changes to a row before UspB commits changes to the same row. UspA must not abort if UspB commits changes to a row before UspA commits changes to the same row.

You need to specify the transaction isolation levels to enable row versioning.

How should you complete the Transact-SQL statements? To answer, drag the 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.

Answer:

Explanation:

References: https://technet.microsoft.com/en-us/library/ms175095(v=sql.105).aspx https://technet.microsoft.com/en-us/library/ms173763(v=sql.105).aspx

Q9. You are developing an application that connects to a database.

The application runs the following jobs:

The READ_COMMITTED_SNAPSHOT database option is set to OFF, and auto-content is set to ON. Within the stored procedures, no explicit transactions are defined.

If JobB starts before JobA, it can finish in seconds. If JobA starts first, JobB takes a long time to complete.

You need to use Microsoft SQL Server Profiler to determine whether the blocking that you observe in JobB is caused by locks acquired by JobA.

Which trace event class in the Locks event category should you use?

A. LockAcquired

B. LockCancel

C. LockDeadlock

D. LockEscalation

Answer: A

Explanation:

The Lock:Acquiredevent class indicates that acquisition of a lock on a resource, such asa data page, has been achieved.

The Lock:Acquired and Lock:Released event classes can be used to monitor when objects are being locked, the typeof locks taken, and for how long the locks were retained. Locks retained for long periods of time may cause contention issues and should be investigated.

Q10. 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 the series. Information and details provided in a question apply only to that question.

You are developing and application to track customer sales.

You need to return the sum of orders that have been finalized, given a specified order identifier. This value will be used in other Transact-SQL statements.

You need to create a database object.

What should you create?

A. extended procedure

B. CLR procedure

C. user-defined procedure

D. DML trigger

E. scalar-valued function

F. table-valued function

Answer: F

Explanation:

User-defined scalar functions return a single data value of the type defined in the RETURNS clause.

References:https://technet.microsoft.com/en-us/library/ms177499(v=sql.105).aspx

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