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| Section | Weight | Objectives |
|---|---|---|
| Data Transformation, Cleansing, and Quality | 10% | - Implement schema evolution and management - Enforce data quality standards - Apply data cleansing and validation rules |
| Ensuring Data Security and Compliance | 10% | - Implement access control and permissions - Secure data at rest and in transit - Ensure data privacy and compliance |
| Data Sharing and Federation | 5% | - Use Delta Sharing for secure data sharing - Manage cross-platform data access - Implement Lakehouse Federation |
| Data Modelling | 6% | - Implement dimensional and relational models - Design Medallion Architecture - Optimize table design and partitioning |
| Data Ingestion & Acquisition | 7% | - Ingest data from diverse sources - Handle incremental and batch data loads - Use Auto Loader and structured streaming |
| Cost & Performance Optimisation | 13% | - Apply cost management best practices - Improve query and pipeline performance - Optimize compute and storage resources |
| Data Governance | 7% | - Use Unity Catalog for governance - Enforce data policies and standards - Manage data assets and metadata |
| Developing Code for Data Processing using Python and SQL | 22% | - Use Databricks-specific libraries and APIs - Write efficient and maintainable code - Implement complex data processing logic |
| Debugging and Deploying | 10% | - Implement CI/CD and DevOps practices - Deploy using Asset Bundles, CLI, and APIs - Troubleshoot and debug pipelines |
| Monitoring and Alerting | 10% | - Set up alerts and notifications - Track data lineage and metrics - Monitor pipeline performance and health |
다음 오류 추적 정보를 검토하십시오.
발생한 오류를 설명하는 문장은 무엇입니까?
Correct Answer: A 🗳️
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데이터 엔지니어링 팀은 다음 코드를 유지 관리합니다.
이 코드가 논리적으로 올바른 결과를 생성하고 원본 테이블의 데이터가 중복 제거 및 유효성 검사를 거쳤다고 가정할 때, 이 코드가 실행될 때 발생하는 상황을 설명하는 문장은 무엇입니까?
Correct Answer: C 🗳️
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데이터 파이프라인은 구조화된 스트리밍 방식을 사용하여 Kafka에서 Delta Lake로 데이터를 수집합니다. 데이터는 Bronze 테이블에 저장되며, Kafka에서 생성된 타임스탬프, 키, 값이 포함됩니다. 파이프라인 배포 후 3개월이 지난 시점에서 데이터 엔지니어링 팀은 특정 시간대에 지연 현상이 발생하는 것을 발견했습니다.
선임 데이터 엔지니어가 Delta 테이블의 스키마와 데이터 수집 로직을 업데이트하여 Apache Spark에서 기록한 현재 타임스탬프와 Kafka 토픽 및 파티션 정보를 포함시켰습니다. 팀은 추가된 메타데이터 필드를 활용하여 일시적인 처리 지연 현상을 진단할 계획입니다.
이 문제를 진단하는 과정에서 팀은 어떤 제약에 직면하게 될까요?
Correct Answer: B 🗳️
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데이터 엔지니어가 Databricks에 있는 대규모 분할 소매 데이터 세트를 분석하고 있습니다. 각 행은 영업 사원이 수행한 판매를 나타냅니다. 이 데이터 세트는 다음과 같은 스키마를 가진 수백만 개의 레코드로 구성되어 있습니다.
sales_df: [salesperson_id: string, region: string, sale_amount: double, sale_date: date] 데이터 엔지니어는 각 지역 내 영업 사원들의 누적 총 판매액을 기준으로 순위를 매기는 데이터프레임을 생성해야 합니다. 가장 높은 판매액을 기록한 영업 사원을 1위로 지정합니다. 여러 영업 사원의 누적 판매액이 같을 경우, 동일한 순위를 부여해야 합니다.
데이터 엔지니어는 PySpark의 윈도우 함수와 dense_rank() 함수를 사용하여 이 로직을 구현하려고 합니다.
어떤 코드 조각이 이러한 순위 매기기를 수행할까요?




Correct Answer: A 🗳️
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데이터 엔지니어링 팀은 수천 개의 테이블과 뷰로 구성된 엔터프라이즈 시스템을 레이크하우스로 마이그레이션하고 있습니다. 이들은 브론즈, 실버, 골드 테이블 계층 구조를 사용하여 목표 아키텍처를 구현할 계획입니다. 브론즈 테이블은 주로 프로덕션 데이터 엔지니어링 워크로드에 사용되고, 실버 테이블은 데이터 엔지니어링 및 머신 러닝 워크로드를 모두 지원하는 데 사용됩니다. 골드 테이블은 주로 비즈니스 인텔리전스 및 보고 목적으로 사용됩니다. 모든 데이터 계층에 개인 식별 정보(PII)가 존재하지만, 실버 및 골드 계층의 모든 데이터에는 가명화 및 익명화 규칙이 적용됩니다.
해당 조직은 다양한 팀 간의 협업 능력을 극대화하면서 보안 문제를 줄이는 데 관심이 있습니다.
다음 중 이 시스템 구현을 위한 모범 사례를 보여주는 문장은 무엇입니까?
Correct Answer: D 🗳️
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