Daily Archives: Monday, March 26, 2018

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    Refer to the exhibit. While troubleshooting a switch, you executed the show interface port-channel 1 etherchannel command and it returned this output.
    Which information is provided by the Load value?


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    Which three statements are true about the operation of a full-duplex Ethernet network? (Choose three.)

    A.    There are no collisions in full-duplex mode.
    B.    A dedicated switch port is required for each full-duplex node.
    C.    Ethernet hub ports are preconfigured for full-duplex mode.
    D.    In a full-duplex environment, the host network card must check for the availability of the network
    media before transmitting.
    E.    The host network card and the switch port must be capable of operating in full-duplex mode.


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    You have a server named Serverl that is hosted in an Azure virtual machine.
    Server1 contains the following:

    – One instance of SQL Server 2016 Enterprise
    – 10 databases
    – 500 stored procedures

    You have a database named Databasel that is hosted on Server1.
    Database1 contains 100 queries that are executed dynamically from web applications.
    You plan to remove data from the procedure cache on Database1.
    You have the following requirements:

    – Changes to Database1 must not affect other databases that are hosted on Server1
    – Changes to Database1 must not affect the performance of queries that are stored in other databases.
    – The solution must minimize administrative effort.

    You need to remove the data from the procedure cache as quickly as possible.
    What should you do?

    D.     Write a script that iterates through each stored procedure definition and add WITH RECOMPILE to the definition.


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    You are developing a Microsoft SQL Server database.
    You create a view that performs the following tasks:
    Joins 10 tables that contain up to 400,000 records each.
    Performs aggregations on 4 fields.
    The view is frequently used in several detailed reports.
    You need to improve the performance of the reports. What should you do?

    A.    Convert the view into a table-valued function
    B.    Convert the view into an indexed view
    C.    Convert the view into a stored procedure and retrieve the result from the stored procedure into a temporary table
    D.    Convert the view into a Common Table Expression (CTE)

    Answer: B
    The first index created on a view must be a unique clustered index. After the unique clustered index has been created, you can create more nonclustered indexes. Creating a unique clustered index on a view improves query performance because the view is stored in the database in the same way a table with a clustered index is stored. The query optimizer may use indexed views to speed up the query execution. The view does not have to be referenced in the query for the optimizer to consider that view for a substitution.

    Is the following statement TRUE or FALSE?
    JSON is not a built-in data type in SQL Server 2016, and SQL Server 2016 does not have custom JSON indexes?

    A.    TRUE
    B.    FALSE

    Answer: A

    The !> operator is a comparison operator that compares two expressions.
    However, if ANSI_NULLS is set to ON and one of the operands is NULL, what will the result be?

    expression !> expression (NULL)

    A.    FALSE
    B.    0
    C.    TRUE
    D.    NULL

    Answer: D
    If either or both operands are NULL and SET ANSI_NULLS is set to ON, the result is NULL. If SET ANSI_NULLS is set to OFF, the result is FALSE if one of the operands is NULL, and TRUE if both operands are NULL.

    You are developing a SQL Server database that contains a heap named OrdersArchive.
    You write the following Transact-SQL query:

    INSERT INTO OrdersArchive
    SELECT * FROM CompletedOrders

    You need to optimize transaction logging and locking for the statement.
    Which table hint should you use?

    A.    HOLDLOCK
    B.    TABLOCK
    C.    XLOCK
    D.    ROWLOCK

    Answer: B
    Table hints override the default behavior of the query optimizer for the duration of the data manipulation language (DML) statement by specifying a locking method, one or more indexes, a query-processing operation such as a table scan or index seek, or other options. Table hints are specified in the FROM clause of the DML statement and affect only the table or view referenced in that clause.
    When importing data into a heap by using the INSERT INTO SELECT FROM statement, you can enable optimized logging and locking for the statement by specifying the TABLOCK hint for the target table. In addition, the recovery model of the database must be set to simple or bulk- logged.

    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.

    A database has two tables as shown in the following database diagram:


    You need to list all provinces that have at least two large cities.
    A large city is defined as having a population of at least one million residents.
    The query must return the following columns:


    Solution: You run the following Transact-SQL statement:


    Does the solution meet the goal?

    A.    Yes
    B.    No

    Answer: A
    The requirement to list all provinces that have at least two large cities is meet by the WHERE CitySummary.LargeCityCount >=2 clause.
    CROSS APPLY will work fine here.
    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.
    There are two forms of APPLY: CROSS APPLY and OUTER APPLY. CROSS APPLY returns only rows from the outer table that produce a result set from the table-valued function. OUTER APPLY returns both rows that produce a result set, and rows that do not, with NULL values in the columns produced by the table-valued function.
    References: https://technet.microsoft.com/en-us/library/ms175156(v=sql.105).aspx

    You create a table named Products.Sales by running the following Transact-SQL statement:

    CREATE TABLE Products.Sales (
    SalesId int IDENTIFY(1,1) PRIMARY KEY,
    SalesDate DateTime NOT NULL,
    SalesAmount decimal(18,2) NULL

    You add the following data to the table.


    You are developing a report to display monthly sales data.
    You need to create a Transact-SQL query to meet the following requirements:

    – Retrieve a column for the year followed by a column for each month from January through December.
    – Include the total sales amount for each month.
    – Aggregate columns by year, month, and then amount.

    Construct the query using the following guidelines:

    – Use the MONTH keyword as the interval when using the DATANAME function.
    – Do not modify the provided IN clause.
    – Do not surround object names with square brackets.
    – Do not use implicit joins.
    – Do not use the DATEPART function.

    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.

    1. SELECT * FROM
    2. (SELECT YEAR(SalesData)) AS Year, DATENAME (MONTH, SalesDate) AS Month,
    SalesAmount AS Amount
    4. ) AS MonthlySalesData
    6. FOR Month IN (January, February, March, April, May, June, July, August, September,
    October, November, December))
    AS MonthNamePivot


    A.    Pending

    Answer: A

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