DEA-C01試験内容 & DEA-C01対策学習

P.S.GoShikenがGoogle Driveで共有している無料の2025 Snowflake DEA-C01ダンプ：https://drive.google.com/open?id=1_tPZEuWM1vIq6yxElSAh-FKd6T7X_lQz

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Snowflake DEA-C01 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Performance Optimization: This topic assesses the ability to optimize and troubleshoot underperforming queries in Snowflake. Candidates must demonstrate knowledge in configuring optimal solutions, utilizing caching, and monitoring data pipelines. It focuses on ensuring engineers can enhance performance based on specific scenarios, crucial for Snowflake Data Engineers and Software Engineers.
トピック 2	Storage and Data Protection: The topic tests the implementation of data recovery features and the understanding of Snowflake's Time Travel and micro-partitions. Engineers are evaluated on their ability to create new environments through cloning and ensure data protection, highlighting essential skills for maintaining Snowflake data integrity and accessibility.
トピック 3	Data Transformation: The SnowPro Advanced: Data Engineer exam evaluates skills in using User-Defined Functions (UDFs), external functions, and stored procedures. It assesses the ability to handle semi-structured data and utilize Snowpark for transformations. This section ensures Snowflake engineers can effectively transform data within Snowflake environments, critical for data manipulation tasks.
トピック 4	Data Movement: Snowflake Data Engineers and Software Engineers are assessed on their proficiency to load, ingest, and troubleshoot data in Snowflake. It evaluates skills in building continuous data pipelines, configuring connectors, and designing data sharing solutions.
トピック 5	Security: The Security topic of the DEA-C01 test covers the principles of Snowflake security, including the management of system roles and data governance. It measures the ability to secure data and ensure compliance with policies, crucial for maintaining secure data environments for Snowflake Data Engineers and Software Engineers.

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人生はさまざまな試しがある、人生の頂点にかからないけど、刺激のない生活に変化をもたらします。あなたは我々社の提供する質高いSnowflake DEA-C01問題集を使用して、試験に参加します。もし無事にDEA-C01試験に合格したら、あなたはもっと自信になって、更なる勇気でやりたいことをしています。

Snowflake SnowPro Advanced: Data Engineer Certification Exam 認定 DEA-C01 試験問題 (Q126-Q131):

質問 # 126
Jeff, a Data Engineer, accessing elements in JSON object in its 3 data loading scripts, he unknow-ingly use the upper case while accessing the elements. e.g.
Script 1 --> fruits:apple.sweet
Script 2 --> FRUITS:apple.sweet
Script 3 --> FRUITS:Apple.Sweet
Which are the correct statements?

A. Script 2&3 traverse path will be same.
B. Script 1 & 3 traverse path will be treated in same way.
C. Script 1,2,3 traverse path will treat in same way.
D. Script 1 & Script 2 traverse path twill be treated same, but Script 2 will not.

正解：D

解説：
Explanation
There are two ways to access elements in a JSON object:
Dot Notation
Bracket Notation
Regardless of which notation you use, the column name is case-insensitive but element names are case-sensitive.

質問 # 127
To help manage STAGE storage costs, Data engineer recommended to monitor stage files and re-move them from the stages once the data has been loaded and the files which are no longer needed. Which option he can choose to remove these files either during data loading or afterwards?

A. Files no longer needed, can be removed using the PURGE=TRUE command.
B. Files no longer needed, can be removed using the REMOVE command.
C. He can choose to remove stage files during data loading (using the COPY INTO <table> command).
D. Script can be used during data loading & post data loading with DELETE command.

正解：A、C

解説：
Explanation
Managing Data Files
Staged files can be deleted from a Snowflake stage (user stage, table stage, or named stage) using the following methods:
Files that were loaded successfully can be deleted from the stage during a load by specifying the PURGE copy option in the COPY INTO <table> command.
After the load completes, use the REMOVE command to remove the files in the stage.
Removing files ensures they aren't inadvertently loaded again. It also improves load performance, because it reduces the number of files that COPY commands must scan to verify whether existing files in a stage were loaded already.

質問 # 128
Clones can be cloned, with no limitations on the number or iterations of clones that can be created (e.g. you can create a clone of a clone of a clone, and so on), which results in a n-level hierarchy of cloned objects, each with their own portion of shared and independent data storage?

A. TRUE
B. FALSE

正解：A

質問 # 129
Within a Snowflake account permissions have been defined with custom roles and role hierarchies.
To set up column-level masking using a role in the hierarchy of the current user, what command would be used?

A. CORRECT_ROLE
B. IS_GRANTED_TO_INVOKER_ROLE
C. IKVOKER_ROLE
D. IS_RCLE_IN_SESSION

正解：D

解説：
Explanation
The IS_ROLE_IN_SESSION function is used to set up column-level masking using a role in the hierarchy of the current user. Column-level masking is a feature in Snowflake that allows users to apply dynamic data masking policies to specific columns based on the roles of the users who access them. The IS_ROLE_IN_SESSION function takes a role name as an argument and returns true if the role is in the current user's session, or false otherwise. The function can be used in a masking policy expression to determine whether to mask or unmask a column value based on the role of the user. For example:
CREATE OR REPLACE MASKING POLICY email_mask AS (val string) RETURNS string -> CASE WHEN IS_ROLE_IN_SESSION('HR') THEN val ELSE REGEXP_REPLACE(val, '(.).(.@.)', '****') END; In this example, the IS_ROLE_IN_SESSION function is used to create a masking policy for an email column.
The masking policy returns the original email value if the user has the HR role in their session, or returns a masked email value with asterisks if not.

質問 # 130
A SQL UDF evaluates an arbitrary SQL expression and returns the result(s) of the expression. Which value type it can returns?

A. A Set of Rows
B. Single Value
C. Regex
D. Scaler or Tabular depend on input SQL expression

正解：D

質問 # 131
......

SnowflakeのDEA-C01認定試験に受かるのはあなたの技能を検証することだけでなく、あなたの専門知識を証明できて、上司は無駄にあなたを雇うことはしないことの証明書です。当面、IT業界でSnowflakeのDEA-C01認定試験の信頼できるソースが必要です。GoShikenはとても良い選択で、DEA-C01の試験を最も短い時間に縮められますから、あなたの費用とエネルギーを節約することができます。それに、あなたに美しい未来を作ることに助けを差し上げられます。

DEA-C01対策学習: https://www.goshiken.com/Snowflake/DEA-C01-mondaishu.html

ちなみに、GoShiken DEA-C01の一部をクラウドストレージからダウンロードできます：https://drive.google.com/open?id=1_tPZEuWM1vIq6yxElSAh-FKd6T7X_lQz