Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional Korean Version) : Databricks-Certified-Data-Engineer-Professional Korean
Exam Code: Databricks-Certified-Data-Engineer-Professional-KR
Exam Name: Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional Korean Version)
Updated: Oct 08, 2026
Q & A: 250 Questions and Answers
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Databricks Databricks-Certified-Data-Engineer-Professional Korean Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Modeling and Transformation | - Spark SQL transformations - Performance optimization techniques - Dimensional modeling concepts |
| Delta Lake and Data Management | - Delta Lake transactions and ACID properties - Schema evolution and enforcement - Time travel and versioning |
| Data Ingestion and Processing | - ETL pipeline design patterns - Structured Streaming fundamentals - Batch and streaming ingestion with Auto Loader |
| Production Pipelines and Orchestration | - Error handling and recovery strategies - Databricks Workflows - Job scheduling and monitoring |
| Databricks Lakehouse Platform Architecture | - Data governance concepts (Unity Catalog basics) - Medallion architecture (Bronze, Silver, Gold) - Workspace and cluster architecture |
Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional Korean Version) Sample Questions:
유출은 다양한 대규모 변혁을 실행하는 과정에서 발생합니다. 하지만 유출을 진단하려면 핵심 지표를 사전에 적극적으로 찾아야 합니다.
Spark UI에서 파티션이 디스크로 스필링되고 있음을 나타내는 주요 지표 두 가지는 어디에 있습니까?
- A. 드라이버 및 실행기 로그 파일
- B. 쿼리 상세 화면 및 작업 상세 화면
- C. 스테이지 상세 화면 및 실행기 로그 파일
- D. 스테이지 상세 화면 및 쿼리 상세 화면
- E. 실행기 상세 화면 및 실행기 로그 파일
Correct Answer: C 🗳️
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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?
- A. 배치 작업이 gold_customer_lifetime_sales_summary 테이블을 업데이트합니다. 이때 customer_id를 기본 키로 사용하여 현재 테이블 버전과 값이 다른 행만 교체합니다.
- B. gold_customer_lifetime_sales_summary 테이블은 silver_customer_sales 테이블의 모든 레코드에서 계산된 집계 값으로 일괄 처리되어 덮어쓰여집니다.
- C. silver_customer_sales 테이블은 gold_customer_lifetime_sales_summary 테이블의 모든 레코드에서 계산된 집계 값으로 일괄 처리되어 덮어쓰여집니다.
- D. 증분 작업은 상태 저장소의 실행 정보를 활용하여 gold_customer_lifetime_sales_summary 테이블의 집계 값을 업데이트합니다.
- E. 증분 작업은 silver_customer_sales 테이블에 새 행이 기록되었는지 감지합니다. 새 행이 감지되면 모든 집계가 다시 계산되어 gold_customer_lifetime_sales_summary 테이블을 덮어씁니다.
Correct Answer: B 🗳️
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데이터 엔지니어는 코드가 매우 유사한 여러 테이블 정의를 포함하는 다음 DLT 코드를 리팩토링하려고 합니다.
데이터 엔지니어는 매개변수화된 테이블 정의를 사용하여 이러한 테이블을 프로그래밍 방식으로 생성하기 위해 다음과 같은 코드를 작성했습니다.
파이프라인은 리팩토링된 코드를 사용하여 업데이트를 실행하지만, 이러한 테이블에 대해 잘못된 구성 값을 보여주는 다른 DAG를 생성합니다.
데이터 엔지니어는 이 문제를 어떻게 해결할 수 있을까요?
- A. for 루프를 다른 테이블 정의로 감싸고, 일반화된 이름과 속성을 사용하여 내부 테이블 정의의 이름과 속성으로 대체합니다.
- B. 파이프라인 매개변수로 제공된 경로에 있는 별도의 파일에서 이러한 테이블에 대한 구성 값을 로드합니다.
- C. 테이블 이름을 키로 사용하여 구성 값 목록을 테이블 설정 사전으로 변환합니다.
- D. 테이블 정의를 별도의 함수로 옮기고, for 루프 안에서 서로 다른 입력 매개변수를 사용하여 이 함수를 호출하세요.
Correct Answer: D 🗳️
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신입 데이터 엔지니어에게 DataFrame df를 사용하여 그룹화된 집계를 수행하는 스트리밍 데이터 파이프라인을 개발하라는 요청이 있었습니다. 이 파이프라인은 겹치지 않는 5분 간격마다 평균 습도와 평균 온도를 계산해야 합니다. 이벤트는 장치별로 1분에 한 번씩 기록됩니다.
스트리밍 데이터프레임 df는 다음과 같은 스키마를 가지고 있습니다.
"장치 ID INT, 이벤트 시간 TIMESTAMP, 온도 FLOAT, 습도 FLOAT"
코드 블록:
이 과제를 완료하려면 코드 블록 안의 빈칸을 올바르게 채우는 답을 선택하세요.
- A. window("event_time", "10분").alias("시간")
- B. window("event_time", "5분").alias("시간")
- C. to_interval("event_time", "5분").alias("시간")
- D. "이벤트 시간"
- E. lag("event_time", "10분").alias("시간")
Correct Answer: B 🗳️
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데이터 엔지니어가 프로덕션 환경에서 사용 중인 여러 Databricks 노트북에 정의된 Python 함수에 대해 일반적인 Python 테스트 프레임워크를 사용하여 단위 테스트를 실행하려고 합니다. 프로덕션 환경에서 데이터를 처리하는 함수에 대해 단위 테스트를 실행하려면 어떻게 해야 할까요?
- A. 별도의 Databricks 노트북에서 단위 테스트 함수를 정의하고 가져옵니다.
- B. 저장소의 파일을 사용하여 함수를 정의하고 단위 테스트를 수행합니다.
- C. 프로덕션 환경과 매우 유사한 비프로덕션 데이터를 사용하여 단위 테스트를 실행합니다.
- D. 동일한 노트북 내에서 단위 테스트와 함수를 정의합니다.
Correct Answer: C 🗳️
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