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| Section | Weight | Objectives |
|---|---|---|
| Performance Optimization & Scalability | 15% | - Monitor and tune workloads and resource usage - Optimize warehouses, clustering, partitioning, and query performance - Design scalable compute and storage solutions |
| Data Ingestion | 25% | - Ingest from various sources: cloud storage, on-premises, APIs, data lakes - Use COPY INTO, external tables, Snowpipe, Snowpipe Streaming - Handle file formats, compression, encoding, and schema detection |
| Data Transformation & Processing | 30% | - Design and implement transformations: SQL, stored procedures, user-defined functions - Implement data quality, validation, and schema evolution - Work with semi-structured and unstructured data - Use streams, tasks, dynamic tables for pipelines and CDC |
| Data Pipeline Orchestration & Automation | 20% | - Integrate with external orchestration tools - Error handling, retry logic, and dependency management - Build, schedule, monitor, and manage workflows |
| Data Governance, Security & Sharing | 10% | - Track lineage, audit, and maintain data integrity - Share data securely across accounts and platforms - Apply access control, masking, encryption, and compliance |
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質問 # 345
Which privilege are required on an object (i.e. user or role) with USERADMIN Role can modify the object properties?
正解：B
質問 # 346
A company has a data pipeline that uses an Amazon RDS instance, AWS Glue jobs, and an Amazon S3 bucket. The RDS instance and AWS Glue jobs run in a private subnet of a VPC and in the same security group.
A user made a change to the security group that prevents the AWS Glue jobs from connecting to the RDS instance. After the change, the security group contains a single rule that allows inbound SSH traffic from a specific IP address.
The company must resolve the connectivity issue.
Which solution will meet this requirement?
正解：C
解説：
Since both the RDS instance and the Glue jobs share the same security group, allowing that security group as the source for inbound TCP traffic (on all ports) immediately restores connectivity from the Glue-attached ENIs to the database. This single rule change requires no additional infrastructure and incurs no extra maintenance.
質問 # 347
A large table with 200 columns contains two years of historical data. When queried. the table is filtered on a single day Below is the Query Profile:
Using a size 2XL virtual warehouse, this query look over an hour to complete What will improve the query performance the MOST?
正解：D
解説：
Explanation
Adding a date column as a cluster key on the table will improve the query performance by reducing the number of micro-partitions that need to be scanned. Since the table is filtered on a single day, clustering by date will make the query more selective and efficient.
質問 # 348
A company uses Amazon S3 to store data and Amazon QuickSight to create visualizations, The company has an S3 bucket in an AWS account named Hub-Account. The S3 bucket is encrypted by an AWS Key Management Service (AWS KMS) key. The company's QuickSight instance is in a separate account named BI-Account.
The company updates the S3 bucket policy to grant access to the QuickSight service role. The company wants to enable cross-account access to allow QuickSight to interact with the S3 bucket.
Which combination of steps will meet this requirement? (Choose two.)
正解：D
質問 # 349
Which system role is recommended for a custom role hierarchy to be ultimately assigned to?
正解：D
解説：
Explanation
The system role that is recommended for a custom role hierarchy to be ultimately assigned to is SECURITYADMIN. This role has the manage grants privilege on all objects in an account, which allows it to grant access privileges to other roles or revoke them as needed. This role can also create or modify custom roles and assign them to users or other roles. By assigning custom roles to SECURITYADMIN, the role hierarchy can be managed centrally and securely. The other options are not recommended system roles for a custom role hierarchy to be ultimately assigned to. Option A is incorrect because ACCOUNTADMIN is the most powerful role in an account, which has full access to all objects and operations. Assigning custom roles to ACCOUNTADMIN can pose a security risk and should be avoided. Option C is incorrect because SYSTEMADMIN is a role that has full access to all objects in the public schema of the account, but not to other schemas or databases. Assigning custom roles to SYSTEMADMIN can limit the scope and flexibility of the role hierarchy. Option D is incorrect because USERADMIN is a role that can manage users and roles in an account, but not grant access privileges to other objects. Assigning custom roles to USERADMIN can prevent the role hierarchy from controlling access to data and resources.
質問 # 350
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