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Snowflake SnowPro® Core Certification (COF-C03日本語版) Sample Questions:
1. 仮想ウェアハウス上で実行待ちのクエリ数を最小限に抑えるには、どの手順を踏むのが良いでしょうか?
A) MAX_CLUSTER_COUNT の値を増やします。
B) AUTO_SUSPEND パラメータの値を増やします。
C) WAREHOUSE_SIZEを増やします。
D) WAIT_FOR_COMPLETION パラメータを FALSE に設定します。
2. Snowflakeがデータ読み込み時に圧縮後のファイルサイズを100~250MBにすることを推奨するのはなぜですか?
A) 仮想倉庫のサイズとマルチクラスタ設定をエコノミーモードに最適化します
B) ユーザーがファイルを順番にインポートできるようにします
C) 並列処理の最適化を可能にする
D) データロード時のレイテンシステージングと精度を向上させます
3. EXPLAIN_PLANの出力にはどのような情報が含まれますか?
A) 操作の実行にかかる予測時間。
B) 操作が参照するマイクロパーティションの総数。
C) この操作で消費されるクレジット数。
D) 操作を実行したときに返されるデータの型。
4. Snowflakeテーブルのうち、ステージ上にレイヤー化された暗黙的なオブジェクトはどれですか?(ステージは内部ステージでも外部ステージでも構いません。)
A) 一時テーブル
B) トランジェントテーブル
C) ディレクトリテーブル
D) マテリアライズドビューを持つテーブル
5. クエリが効率的にプルーニングを行っているかどうかを判断するために使用できるクエリプロファイルのメトリックはどれですか?
A) スキャンされたパーティションとパーティションの合計
B) 結果から読み取ったバイト数と結果に書き込んだバイト数
C) ローカルストレージにバイトが流出し、リモートストレージにバイトが流出しました
D) 挿入された行数と更新された行数
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: A |

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