Databricks Databricks-Certified-Data-Engineer-Professional-JPN Questions & Answers - in .pdf
- Total Q&A: 250
- Update: Jun 04, 2026
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- Vendor: Databricks
- Exam Code: Databricks-Certified-Data-Engineer-Professional-JPN
- Exam Name: Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional日本語版)
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Databricks Databricks-Certified-Data-Engineer-Professional-JPN Q&A - Testing Engine
- Total Q&A: 250
- Update: Jun 04, 2026
- Price: $69.99
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Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional日本語版) Sample Questions:
1. Spark へのデータの取り込み時に Spark パーティションのサイズに直接影響する構成パラメータはどれですか?
A) spark.sql.files.maxPartitionBytes
B) spark.sql.adaptive.advisoryPartitionSizeInBytes
C) spark.sql.autoBroadcastJoinThreshold
D) spark.sql.adaptive.coalescePartitions.minPartitionNum
E) spark.sql.files.openCostInBytes
2. 3 つのエグゼキュータ ノードを持つ特定のクラスターの Ganglia メトリックを評価する場合、VM のリソースが適切に使用されていることを示す指標はどれですか。
A) 受信バイト数は1秒あたり8000万バイトを超えることはありません
B) 5分間の負荷平均は一定/平坦のままです
C) ディスク容量の合計は一定のままです
D) CPU使用率は約75%です
E) ネットワークI/Oが急上昇することはありません
3. データエンジニアは、サードパーティが提供するREST APIエンドポイントから、異なるレポートタイプを指定して複数のPDFファイルをダウンロードするジョブを実装しています。REST APIは時間がかかり、断続的にエラーが発生するため、エンジニアは各ダウンロードアクティビティを追跡して失敗を把握し、部分的に再試行することで、スケーラブルなスループットを実現したいと考えています。エンジニアは10種類のレポートをダウンロードする必要があり、そのリストは時間の経過とともに変更される可能性があります。データエンジニアはどのようにこれを実現すればよいでしょうか？
A) Delta Lake テーブルを使用して、各レポートのダウンロード ステータスを 10 行として追跡し、それをソース テーブルとして使用して、ダウンロード機能を Pandas UDF として実行します。
B) ノートブック内にリスト変数を定義し、レポートの種類をループしてダウンロードし、ダウンロード結果を出力します。ノートブックタスクとして実行します。
C) どのレポートのダウンロードが失敗したかを明確に追跡するための 10 個のノートブック タスクを定義します。
D) レポート タイプのリストを入力として、foreach タスクを使用します。
4. データ エンジニアは、ひどく偏った国別の履歴パーティションを持つ Delta テーブルを継承します。
クエリは多くの場合、高カーディナリティの customer_id でフィルタリングされ、時間の経過とともにディメンション間で変化します。エンジニアは、混乱を招く完全な書き換えを回避し、偏ったパーティションの影響を軽減し、アクセスパターンの変化に応じて優れたクエリパフォーマンスを維持する戦略を求めています。データエンジニアが実行すべき2つのアクションはどれですか？(2つ選択してください。)
A) 既存のパーティションを保持し、ビンパッキング OPTIMIZE のみに依存します。多次元フィルターでは ZORDER とクラスタリングは不要です。
B) メンテナンスのオーバーヘッドを回避するためにデータ スキップ統計を無効にし、代わりに適応型クエリ実行に依存します。
C) OPTIMIZE table_name を定期的に実行します。
D) 最適化された書き込みのみに依存します。Databricks は時間の経過とともにパーティション分割をクラスタリングに自動的に置き換えます。
E) 静的パーティショニングからリキッド クラスタリングに切り替えて、customer_id などの一般的なフィルターを反映する初期クラスタリング キーを選択します。
5. データエンジニアがメールアドレスを含む列をマスクしています。目標は、すべての行で同じ長さの出力文字列を生成し、メールアドレスの値ごとに異なる出力を生成することです。
これを実現するにはどの SQL 関数を使用する必要がありますか?
A) sha1(email)
B) hash(email)
C) sha2(email, 0)
D) mask(email, '?')
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: C,E | Question # 5 Answer: B |
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