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Exam 70-461 topic 1 question 66 discussion

Actual exam question from Microsoft's 70-461
Question #: 66
Topic #: 1
[All 70-461 Questions]

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?

  • A. Add a HASH hint to the query.
  • B. Add a LOOP hint to the query.
  • C. Add a FORCESEEK hint to the query.
  • D. Add an INCLUDE clause to the index.
  • E. Add a FORCESCAN hint to the Attach query.
  • F. Add a columnstore index to cover the query.
  • G. Enable the optimize for ad hoc workloads option.
  • H. Cover the unique clustered index with a columnstore index.
  • I. Include a SET FORCEPLAN ON statement before you run the query.
  • J. Include a SET STATISTICS PROFILE ON statement before you run the query. K. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query. L. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query. M. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query. N. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.
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Suggested Answer: F 🗳️

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