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Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional日本語版) - Databricks-Certified-Data-Engineer-Professional日本語 real prep

Databricks-Certified-Data-Engineer-Professional日本語
  • 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)
  • Updated: Dec 13, 2025
  • Q & A: 127 Questions and Answers
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Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional日本語版) Sample Questions:

1. 実稼働クラスターには 3 つのエグゼキュータ ノードがあり、ドライバーとエグゼキュータに同じ仮想マシン タイプを使用します。
このクラスターの Ganglia メトリックを評価する場合、ドライバー上で実行されるコードによって発生したボトルネックを示すインジケーターはどれですか?

A) ディスク容量の合計は一定のままです
B) 5分間の負荷平均は一定/平坦のままです
C) 受信バイト数は1秒あたり8000万バイトを超えません
D) クラスタ全体のCPU使用率は約25%です
E) ネットワークI/Oが急上昇しない
Certified-Data-Engineer-Professional試験の最新かつ実際の質問と回答を入手する


2. 必要なモジュールを見つけようとするときに検索するディレクトリのリストが含まれている Python 変数はどれですか?

A) pypi.path
B) pylib.source
C) sys.path
D) importlib.resource path
E) os-path


3. データ取り込みタスクでは、1TBのJSONデータセットをParquetに書き出す必要があります。目標ファイルサイズは512MBです。Delta LakeではなくParquetを使用しているため、自動最適化や自動圧縮などの組み込みのファイルサイズ調整機能は使用できません。
データをシャッフルせずに最高のパフォーマンスを実現する戦略はどれですか?

A) spark.sql.shuffle.partitions を 512 に設定し、データを取り込み、ナロー変換を実行してから、parquet に書き込みます。
B) spark.sql.files.maxPartitionBytes を 512 MB に設定し、データを取り込み、ナロー変換を実行してから、parquet に書き込みます。
C) spark.sql.shuffle.partitions を 2,048 パーティション (1TB*1024*1024/512) に設定し、データを取り込み、ナロー変換を実行し、データをソートして最適化し (これにより、データが自動的に再パーティション化されます)、parquet に書き込みます。
D) spark.sql.adaptive.advisoryPartitionSizeInBytes を 512 MB バイトに設定し、データを取り込み、ナロー変換を実行し、2,048 個のパーティション (1TB*1024*1024/512) に結合してから、parquet に書き込みます。
E) データを取り込み、ナロー変換を実行し、2,048 個のパーティション (1TB*) に再分割します。
1024*1024/512)を計算し、parquet に書き込みます。


4. Delta Lake Auto Compaction について説明している記述はどれですか?

A) 最適化された書き込みでは、ディレクトリ パーティションではなく論理パーティションが使用されます。パーティション境界はメタデータでのみ表されるため、書き込まれる小さなファイルの数は少なくなります。
B) 書き込みが完了した後、ファイルをさらに圧縮できるかどうかを検出するための非同期ジョブが実行されます。圧縮できる場合は、デフォルトの 128 MB に向けて最適化ジョブが実行されます。
C) データはメモリに直接コミットされるのではなく、メッセージング バスのキューに入れられます。ジョブが完了すると、すべてのデータはメッセージング バスから 1 つのバッチでコミットされます。
D) ジョブ クラスターが終了する前に、最新のジョブ中に変更されたすべてのテーブルに対して最適化が実行されます。
Certified-Data-Engineer-Professional試験の最新かつ実際の質問と回答を入手する
E) 書き込みが完了した後、ファイルをさらに圧縮できるかどうかを検出するための非同期ジョブが実行されます。圧縮できる場合は、デフォルトの 1 GB に向けて最適化ジョブが実行されます。


5. テキスト エディターで表示した場合、Databricks Python ノートブックの最初の部分は何ですか。

A) # MAGIC %python
B) // Databricks notebook source
C) -- Databricks notebook source
D) # Databricks notebook source
E) %python


Solutions:

Question # 1
Answer: D
Question # 2
Answer: C
Question # 3
Answer: C
Question # 4
Answer: B
Question # 5
Answer: D

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