You administer several Microsoft SQL Server 2012 database servers. Merge replication has been
configured for an application that is distributed across offices throughout a wide area network
(WAN). Many of the tables involved in replication use the XML and varchar (max) data types.
Occasionally, merge replication fails due to timeout errors. You need to reduce the occurrence of
these timeout errors. What should you do?

You use a contained database named ContosoDb within a domain. You need to create a user who
can log on to the ContosoDb database. You also need to ensure that you can port the database to
different database servers within the domain without additional user account configurations. Which
type of user should you create?

You use a contained database named ContosoDb within a domain. You need to create a user who
can log on to the ContosoDb database. You also need to ensure that you can port the database to
different database servers within the domain without additional user account configurations. Which
type of user should you create?

You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year
marks for students. The table has marks obtained by 50 students for various subjects. You need to
retrieve the students who scored the highest marks for each subject along with the marks. Which
Transact-SQL query should you use?

You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year
marks for students. The table has marks obtained by 50 students for various subjects. You need to
ensure that the following requirements are met:
– Students must be ranked based on their average marks.
– If one or more students have the same average, the same rank must be
given to these students.
– Consecutive ranks must be skipped when the same rank is assigned.
Which Transact-SQL query should you use?

You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year

marks for students. The table has marks obtained by 50 students for various subjects. You need to
ensure that the top half of the students arranged by their average marks must be given a rank of 1
and the remaining students must be given a rank of 2. Which Transact-SQL query should you use?

You use Microsoft SQL Server 2012 to write code for a transaction that contains several statements.
There is high contention between readers and writers on several tables used by your transaction.
You need to minimize the use of the tempdb space. You also need to prevent reading queries from
blocking writing queries. Which isolation level should you use?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as
shown in the exhibit.

You need to display rows from the Orders table for the Customers row having the Customerld value
set to 1 in the following XML format.

Which Transact-SQL query should you use?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as
shown in the exhibit.

You need to display rows from the Orders table for the Customers row having the CustomerId value
set to 1 in the following XML format.

Which Transact-SQL query should you use?

You are developing a database application by using Microsoft SQL Server 2012. An application
that uses a database begins to run slowly. Your investigation shows the root cause is a query
against a read-only table that has a clustered index. The query returns the following six columns:
– One column in its WHERE clause contained in a non-clustered index.

– Four additional columns.
– One COUNT (*) column based on a grouping of the four additional columns.
You need to optimize the statement. What should you do?