You administer a SQL Server 2014 instance.
Users report that the SQL Server has seemed slow today. A large database was being restored for much of the
day, which could be causing issues.
You want to write a query of the system views that will report the following:
Number of users that have a connection to the server
Whether a user’s connection is active
Whether any connections are blocked
What queries are being executed
Whether the database restore is still executing and, if it is, what percentage of the restore is complete.
Which system objects should you use in your query to best achieve this task?

A.
sys.dm_exec_requests, sys.dm_exec_sessions, sys.objects

B.
sys.dm_exec_sessions, sys.dm_exec_query_stats, sys.dm_exec_query_text,sys.objects

C.
sys.sysprocesses, sys.dm_exec_query_text, sys.objects

D.
sys.dm_exec_requests, sys.dm_exec_sessions, sys.dm_exec_query_text

Explanation:
* sys.dm_exec_requests
Returns information about each request that is executing within SQL Server.
* sys.dm_exec_sessions
Returns one row per authenticated session on SQL Server. sys.dm_exec_sessions is a server-scope view that
shows information about all active user connections and internal tasks. This information includes client version,
client program name, client login time, login user, current session setting, and more.
* sys.dm_exec_query_text
Returns the text of the SQL batch that is identified by the specified sql_handle.

sys.dm_exec_requests (Transact-SQL)
sys.dm_exec_sessions (Transact-SQL)
Incorrect:
* sys.dm_exec_query_stats
Returns aggregate performance statistics for cached query plans in SQL Server. The view contains one row per
query statement within the cached plan, and the lifetime of the rows are tied to the plan itself.
* sys.objects
Contains a row for each user-defined, schema-scoped object that is created within a database.