Secure, monitor, and optimize data storage and data processing →mediumMultiple ChoiceObjective-mapped
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
You are monitoring an Azure Synapse Analytics dedicated SQL pool and notice that some queries are taking longer than expected. You need to identify queries that are experiencing significant memory pressure. Which dynamic management view (DMV) should you query?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
sys.dm_pdw_exec_requests
Sys.dm_pdw_exec_requests provides information about queries including their memory grant size, which can be used to identify queries experiencing memory pressure. Option B is incorrect because sys.dm_pdw_wait_stats shows wait statistics, not memory pressure. Option C is incorrect because sys.dm_pdw_query_stats_xe is for extended events, not directly for memory grants. Option D is incorrect because sys.dm_pdw_nodes_os_performance_counters shows OS-level performance counters, not query-level memory information.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
sys.dm_pdw_exec_requests
Why this is correct
This DMV includes memory_grant and memory_used columns to assess memory pressure.
- ✗
sys.dm_pdw_wait_stats
Why it's wrong here
This DMV shows wait types but not memory grant details.
- ✗
sys.dm_pdw_query_stats_xe
Why it's wrong here
This DMV shows query execution statistics from extended events, not memory grants.
- ✗
sys.dm_pdw_nodes_os_performance_counters
Why it's wrong here
This DMV provides OS performance counters, not memory grants for queries.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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