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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Snowflake Architecture | 30% | - Data protection and recovery strategies - Data sharing architecture design - Development lifecycle and workload support - Object hierarchy and architectural impact - Data modeling and use cases |
| Topic 2: Data Engineering | 25% | - Data pipeline and integration design - Transformation and processing frameworks - Data loading and unloading solutions |
| Topic 3: Performance Optimization | 20% | - Clustering and partitioning strategies - Query performance tuning - Cost optimization and resource management - Virtual warehouse configuration and sizing |
| Topic 4: Accounts and Security | 25% | - Security, compliance and governance architecture - Account and database strategy design - Security principles and implementation scenarios |
꿈을 안고 사는 인생이 멋진 인생입니다. 고객님의 최근의 꿈은 승진이나 연봉인상이 아닐가 싶습니다. Snowflake인증 ARA-C01시험은 IT인증시험중 가장 인기있는 국제승인 자격증을 취득하는데서의 필수시험과목입니다.그만큼 시험문제가 어려워 시험도전할 용기가 없다구요? 이제 이런 걱정은 버리셔도 됩니다. PassTIP의 Snowflake인증 ARA-C01덤프는Snowflake인증 ARA-C01시험에 대비한 공부자료로서 시험적중율 100%입니다.
질문 # 173
Which of the following are characteristics of how row access policies can be applied to external tables?
(Choose three.)
정답：B,D,E
설명：
Explanation
These three statements are true according to the Snowflake documentation and the web search results. A row access policy is a feature that allows filtering rows based on user-defined conditions. A row access policy can be applied to an external table, which is a table that reads data from external files in a stage. However, there are some limitations and considerations for using row access policies with external tables.
* An external table can be created with a row access policy by using the WITH ROW ACCESS POLICY clause in the CREATE EXTERNAL TABLE statement. The policy can be applied to the VALUE column, which is the column that contains the raw data from the external files in a VARIANT data type1.
* A row access policy can also be applied to the VALUE column of an existing external table by using the ALTER TABLE statement with the SET ROW ACCESS POLICY clause2.
* A row access policy cannot be directly added to a virtual column of an external table. A virtual column is a column that is derived from the VALUE column using an expression. To apply a row access policy to a virtual column, the policy must be applied to the VALUE column and the expression must be repeated in the policy definition3.
* External tables are not supported as mapping tables in a row access policy. A mapping table is a table that is used to determine the access rights of users or roles based on some criteria. Snowflake does not support using an external table as a mapping table because it may cause performance issues or errors4.
* While cloning a database, Snowflake clones the row access policy, but not the external table. Therefore, the policy in the cloned database refers to a table that is not present in the cloned database. To avoid this issue, the external table must be manually cloned or recreated in the cloned database4.
* A row access policy can be applied to a view created on top of an external table. The policy can be applied to the view itself or to the underlying external table. However, if the policy is applied to the view, the view must be a secure view, which is a view that hides the underlying data and the view definition from unauthorized users5.
References:
* CREATE EXTERNAL TABLE | Snowflake Documentation
* ALTER EXTERNAL TABLE | Snowflake Documentation
* Understanding Row Access Policies | Snowflake Documentation
* Snowflake Data Governance: Row Access Policy Overview
* Secure Views | Snowflake Documentation
질문 # 174
A retail company has over 3000 stores all using the same Point of Sale (POS) system. The company wants to deliver near real-time sales results to category managers. The stores operate in a variety of time zones and exhibit a dynamic range of transactions each minute, with some stores having higher sales volumes than others.
Sales results are provided in a uniform fashion using data engineered fields that will be calculated in a complex data pipeline. Calculations include exceptions, aggregations, and scoring using external functions interfaced to scoring algorithms. The source data for aggregations has over 100M rows.
Every minute, the POS sends all sales transactions files to a cloud storage location with a naming convention that includes store numbers and timestamps to identify the set of transactions contained in the files. The files are typically less than 10MB in size.
How can the near real-time results be provided to the category managers? (Select TWO).
정답：B,C
설명：
To provide near real-time sales results to category managers, the Architect can use the following steps:
Create an external stage that references the cloud storage location where the POS sends the sales transactions files. The external stage should use the file format and encryption settings that match the source files2 Create a Snowpipe that loads the files from the external stage into a target table in Snowflake. The Snowpipe should be configured with AUTO_INGEST = true, which means that it will automatically detect and ingest new files as they arrive in the external stage. The Snowpipe should also use a copy option to purge the files from the external stage after loading, to avoid duplicate ingestion3 Create a stream on the target table that captures the INSERTS made by the Snowpipe. The stream should include the metadata columns that provide information about the file name, path, size, and last modified time. The stream should also have a retention period that matches the real-time analytics needs4 Create a task that runs a query on the stream to process the near real-time data. The query should use the stream metadata to extract the store number and timestamps from the file name and path, and perform the calculations for exceptions, aggregations, and scoring using external functions. The query should also output the results to another table or view that can be accessed by the category managers. The task should be scheduled to run at a frequency that matches the real-time analytics needs, such as every minute or every 5 minutes.
The other options are not optimal or feasible for providing near real-time results:
All files should be concatenated before ingestion into Snowflake to avoid micro-ingestion. This option is not recommended because it would introduce additional latency and complexity in the data pipeline. Concatenating files would require an external process or service that monitors the cloud storage location and performs the file merging operation. This would delay the ingestion of new files into Snowflake and increase the risk of data loss or corruption. Moreover, concatenating files would not avoid micro-ingestion, as Snowpipe would still ingest each concatenated file as a separate load.
An external scheduler should examine the contents of the cloud storage location and issue SnowSQL commands to process the data at a frequency that matches the real-time analytics needs. This option is not necessary because Snowpipe can automatically ingest new files from the external stage without requiring an external trigger or scheduler. Using an external scheduler would add more overhead and dependency to the data pipeline, and it would not guarantee near real-time ingestion, as it would depend on the polling interval and the availability of the external scheduler.
The copy into command with a task scheduled to run every second should be used to achieve the near-real time requirement. This option is not feasible because tasks cannot be scheduled to run every second in Snowflake. The minimum interval for tasks is one minute, and even that is not guaranteed, as tasks are subject to scheduling delays and concurrency limits. Moreover, using the copy into command with a task would not leverage the benefits of Snowpipe, such as automatic file detection, load balancing, and micro-partition optimization. Reference:
1: SnowPro Advanced: Architect | Study Guide
2: Snowflake Documentation | Creating Stages
3: Snowflake Documentation | Loading Data Using Snowpipe
4: Snowflake Documentation | Using Streams and Tasks for ELT
5: Snowflake Documentation | Creating Tasks
6: Snowflake Documentation | Best Practices for Loading Data
7: Snowflake Documentation | Using the Snowpipe REST API
8: Snowflake Documentation | Scheduling Tasks
9: SnowPro Advanced: Architect | Study Guide
10: Creating Stages
11: Loading Data Using Snowpipe
12: Using Streams and Tasks for ELT
13: [Creating Tasks]
14: [Best Practices for Loading Data]
15: [Using the Snowpipe REST API]
16: [Scheduling Tasks]
질문 # 175
VALIDATION_MODE does not support COPY statements that transform data during a load
정답：A
질문 # 176
Following objects can be cloned in snowflake
정답：A,B,C
질문 # 177
A company is designing its serving layer for data that is in cloud storage. Multiple terabytes of the data will be used for reporting. Some data does not have a clear use case but could be useful for experimental analysis. This experimentation data changes frequently and is sometimes wiped out and replaced completely in a few days.
The company wants to centralize access control, provide a single point of connection for the end-users, and maintain data governance.
What solution meets these requirements while MINIMIZING costs, administrative effort, and development overhead?
정답：B
설명：
The most cost-effective and administratively efficient solution is to use a combination of native and external tables. Native tables for reporting data ensure performance and governance, while external tables allow for flexibility with frequently changing experimental data. Creating roles with specific grants to datasets aligns with the principle of least privilege, centralizing access control and simplifying user management12.
Reference
* Snowflake Documentation on Optimizing Cost1.
* Snowflake Documentation on Controlling Cost2.
질문 # 178
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만약 여러분은Snowflake ARA-C01인증시험취득으로 이 치열한 IT업계경쟁 속에서 자기만의 자리를 잡고, 스펙을 쌓고, 전문적인 지식을 높이고 싶으십니까? 하지만Snowflake ARA-C01패스는 쉬운 일은 아닙니다.Snowflake ARA-C01패스는 여러분이 IT업계에 한발작 더 가까워졌다는 뜻이죠. 하지만 이렇게 중요한 시험이라고 많은 시간과 정력을 낭비할필요는 없습니다. PassTIP의 완벽한 자료만으로도 가능합니다. PassTIP의 덤프들은 모두 전문적으로 IT관련인증시험에 대하여 연구하여 만들어진것이기 때문입니다.
ARA-C01최신 기출문제: https://www.passtip.net/ARA-C01-pass-exam.html
참고: PassTIP에서 Google Drive로 공유하는 무료, 최신 ARA-C01 시험 문제집이 있습니다: https://drive.google.com/open?id=1Srwko2q7y6jH1MiisOG39ETzZsfnfdPg