Microsoft 70-762 Online Practice Questions and Exam Preparation

Microsoft 70-762 Online Questions & Answers

• Question 181:

  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 independent of the other questions in this series.

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

  You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three Microsoft SQL Server instances. There are many SQL jobs that run

  during off-peak hours.

  You must monitor and optimize the SQL Server to maximize throughput, response time, and overall SQL performance.

  You need to identify previous situations where a modification has prevented queries from selecting data in tables.

  What should you do?

  A. Create a sys.dm_os_waiting_tasks query.
  B. Create a sys.dm_exec_sessions query.
  C. Create a Performance Monitor Data Collector Set.
  D. Create a sys.dm_os_memory_objects query.
  E. Create a sp_configure `max server memory' query.
  F. Create a SQL Profiler trace.
  G. Create a sys.dm_os_wait_stats query.
  H. Create an Extended Event.
  G. Create a sys.dm_os_wait_stats query.

  ---

  sys.dm_os_wait_stats returns information about all the waits encountered by threads that executed. You can use this aggregated view to diagnose performance issues with SQL Server and also with specific queries and batches.

• Question 182:

  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.

  Hot Area:

  

  

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  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