完整的DEA-C01資料擁有模擬真實考試環境與場境的軟件VCE版本&高通過率的DEA-C01考題
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最新的 SnowPro Advanced DEA-C01 免費考試真題 (Q218-Q223):
問題 #218
A gaming company uses AWS Glue to perform read and write operations on Apache Iceberg tables for real-time streaming data. The data in the Iceberg tables is in Apache Parquet format.
The company is experiencing slow query performance.
Which solutions will improve query performance? (Choose two.)
- A. Use AWS Glue Data Catalog to automatically optimize indexes for the Iceberg tables.
- B. Use AWS Glue Data Catalog to automatically compact the Iceberg tables.
- C. Use AWS Glue Data Catalog to generate views for the Iceberg tables.
- D. Use AWS Glue Data Catalog to enable copy-on-write for the Iceberg tables.
- E. Use AWS Glue Data Catalog to generate column-level statistics for the Iceberg tables on a schedule.
答案:B,D
解題說明:
Compaction reduces many small Parquet files into larger ones, lowering file-listing and open/scan overhead for faster reads.
Copy-on-write favors read performance by materializing updates into rewritten data files, resulting in more contiguous, scan-efficient files for queries.
問題 #219
Which output is provided by both theSYSTEM$CLUSTERING_DEPTHfunction and theSYSTEM$CLUSTERING_INFORMATIONfunction?
- A. average_overlaps
- B. average_depth
- C. notes
- D. total_partition_count
答案:B
解題說明:
Explanation
The output that is provided by both the SYSTEM$CLUSTERING_DEPTH function and the SYSTEM$CLUSTERING_INFORMATION function is average_depth. This output indicates the average number of micro-partitions that contain data for a given column value or combinationof column values. The other outputs are not common to both functions. The notes output is only provided by the SYSTEM$CLUSTERING_INFORMATION function and it contains additional information or recommendations about the clustering status of the table. The average_overlaps output is only provided by the SYSTEM$CLUSTERING_DEPTH function and it indicates the average number of micro-partitions that overlap with other micro-partitions for a given column value or combination of column values. The total_partition_count output is only provided by the SYSTEM$CLUSTERING_INFORMATION function and it indicates the total number of micro-partitions in the table.
問題 #220
Harry using Snowflake Enterprise Edition & decided to scale in/out the Cluster in automatic mode. He needs to configure some warehouses as multi cluster mode and some among them in Standard mode as per needs.
If Harry is using Snowflake Enterprise Edition (or a higher edition), all his warehouses should be configured as multi-cluster warehouses only.
- A. FALSE
- B. TRUE
答案:B
解題說明:
Explanation
If you are using Snowflake Enterprise Edition (or a higher edition), all your warehouses should be configured as multi-cluster warehouses.
問題 #221
Which of the following System keeps the following characteristics?
a. It will keep in it all the raw data.
b. Generally, the users of it is data scientists and data developers.
c. Flat architecture
d. Highly agile
- A. Data Lake
- B. Data Warehouse
- C. Data Mart
- D. Data Hub
答案:A
問題 #222
The following code is executed ina Snowflake environment with the default settings:
What will be the result of the select statement?
- A. SQL compilation error object CUSTOMER' does not exist or is not authorized.
- B. 0
- C. 1John
- D. John
答案:B
問題 #223
......
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