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Exam 70-464 topic 3 question 9 discussion

Actual exam question from Microsoft's 70-464
Question #: 9
Topic #: 3
[All 70-464 Questions]

You discover that usp.SelectSpeakersByName executes slowly if usp_UpdateSpeakerName executes simultaneously.
You need to minimize the execution time of usp.SelectSpeakersByName. The solution must not affect the performance of the other stored procedures.
What should you update?

  • A. Usp_UpdateSpeakerName to use the NOLOCK query hint
  • B. Usp_UpdateSpeakerName to use snapshot isolation
  • C. Usp_SelectSpeakersByName to use the NOLOCK query hint
  • D. Usp_SelectSpeakersByName to use snapshot isolation
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Suggested Answer: C 🗳️
NOLOCK -
Is equivalent to READUNCOMMITTED.

READUNCOMMITTED -
Specifies that dirty reads are allowed.
by Zikato at Dec. 14, 2020, 2:59 p.m.

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Zikato
4 years, 4 months ago
I would use snapshot isolation for the reading sproc. Snapshot is not blocking and you have committed data.
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