TeraData TDVAN5復習範囲: HCIA-Datacom V1.0 - Pass4Test練習 &プロフェッショナル認定コース

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クライアントはTDVAN5試験問題を学習し、テストの準備をするのに20〜30時間しかかかりません。多くの人は、TDVAN5テストの準備が必要だと不満を言うかもしれませんが、一方でPass4Test、仕事、学習、家族などの最も重要なことにほとんどの時間を費やさなければなりません。ただし、TDVAN5学習ガイドを購入すると、テストの準備に時間と労力がほとんどかからないため、最も重要なことをうまくやり、TDVAN5テストに簡単に合格できます。

TeraData TDVAN5 認定試験の出題範囲：

トピック	出題範囲
トピック 1	ユーザー管理: このセクションでは、ロールとプロキシアクセス構成を通じてユーザーのセキュリティ要件を満たすシステム管理者のスキルを評価します。候補者は、プロファイルの機能と利点、および新規ユーザーに対して設定する必要がある主要な属性についても学習します。
トピック 2	統合: このセクションでは、QueryGrid や NOS などの統合ツールを利用するデータベース管理者のスキルをテストします。QueryGrid の利点、特徴、機能、その実装をサポートするデータベースオブジェクト、NOS および外部サーバーにアクセスした場合のパフォーマンスへの影響について説明します。
トピック 3	データベース管理: このセクションでは、データベース管理者のアクセス権と高度な分析機能の管理スキルをテストします。ログ記録の利点、権限の種類、およびグローバルパラメータの変更がユーザーセッションに与える影響について説明します。

>> TDVAN5復習範囲 <<

TDVAN5日本語試験情報 & TDVAN5日本語対策

大量の時間と金銭をかかるのに比べて、正しい仕方は肝心なことです。もしあなたはTeraData　TDVAN5試験に準備しているなら、あんたのための整理される備考資料はあなたにとって最善のオプションです。我々の目標はあなたに試験にうまく合格させることです。弊社の誠意を信じてもらいたいし、TeraData　TDVAN5試験2成功するのを祈って願います。

TeraData HCIA-Datacom V1.0 認定 TDVAN5 試験問題 (Q34-Q39):

質問 # 34
Business users are regularly joining a common set of columns from parquet external data to existing dimension tables. An Administrator needs to improve the performance of these queries where they filter on common columns.
Which strategy can be used to improve performance?

A. Change the primary index of the foreign server to the filtering columns.
B. Row partition the parquet table on the filter columns.
C. Create a foreign server to access the data with column partitioning.
D. Create a multi-table join index to cover the joined data.

正解：D

解説：
A multi-table join index pre-joins data from multiple tables and stores the result, allowing subsequent queries that perform similar joins to access the pre-joined data directly. This can significantly improve query performance, especially when there is a common set of columns frequently joined between parquet external data and dimension tables.
Option A (Row partition the parquet table on the filter columns): While row partitioning might improve some performance aspects, it's more suited for managing large datasets within Vantage tables and not as effective for parquet external data access.
Option B (Change the primary index of the foreign server to the filtering columns): There is no "primary index" on foreign servers. Foreign data (like parquet) doesn't use Vantage primary index concepts, so this option is not applicable.
Option C (Create a foreign server to access the data with column partitioning): Column partitioning is not typically applicable to external parquet data accessed through a foreign server in the same way it is for native tables. While you can optimize column access, a multi-table join index is more effective for query performance involving frequent joins.

質問 # 35
The Administrator defined the following AWT resource limits in Viewpoint Workload Designer:
* Rule 1: A limit of 50 percent of AWTs for all DSA restore jobs in the system, with reject
* Rule 2: A limit of 20 percent of AWTs for DSA restore jobs from user UserA, with delay
* Rule 3: A limit of 10 percent of AWTs for DSA restore jobs from user UserB, with delay UserB is running DSA restore jobs, consuming 10% of AWTs. Other users are running DSA restore jobs and consuming 40% of AWTs.
What will TASM do if UserA submits a DSA restore job request?

A. TASM rejects it because it would exceed the AWT limit of Rule 1.
B. TASM delays it because it would exceed the AWT limit of Rule 1.
C. TASM rejects it because it does not exceed the AWT limit of Rule 2.
D. TASM delays it because it does not exceed the AWT limit of Rule 2.

正解：B

解説：
Rule 1 limits all DSA restore jobs in the system to 50% of AWTs. Currently, 40% of AWTs are consumed by other users, and UserB is consuming 10%. So, the total AWT usage is already at the 50% limit.
Since submitting a new DSA restore job from UserA would exceed the 50% limit set in Rule 1, TASM will delay the request, as Rule 1 applies system-wide.
Rule 2 applies specifically to UserA, but Rule 1 takes precedence since the total system AWT usage is already at the global 50% threshold.
Thus, TASM delays the job because it would violate the global AWT limit in Rule 1.

質問 # 36
An Administrator notices that a system appears to be near capacity and needs to access a dictionary to assess that AMPs are entering into flow control.
Which dictionary should be accessed for this purpose?

A. DBC.SessionInfoV
B. DBC.ResUsageSawt
C. DBC.ResUsageSldv
D. DBC.AMPUsage

正解：B

解説：
The DBC.ResUsageSawt view provides detailed information about the resource usage of AMP Worker Tasks (AWTs), including whether AMPs are experiencing flow control. Flow control occurs when AMPs are overwhelmed and need to throttle the workload, and this view tracks metrics related to AWT usage and system resource contention, which would indicate when AMPs are under strain.
Option A (DBC.SessionInfoV) provides information about current user sessions but does not provide insights into AMP-level flow control or resource usage.
Option C (DBC.AMPUsage) provides general statistics about AMP usage but doesn't give detailed information about flow control or AWT usage.
Option D (DBC.ResUsageSldv) tracks statistics related to logical disk usage but isn't focused on AMP flow control.

質問 # 37
A client has a healthy system but often sees delays in some queries because of workload concurrency limits. These limits have been carefully chosen, so the client needs a solution that will not modify them.
What should the Administrator use to assist this client?

A. Use Flex Throttle option.
B. Use a system throttle.
C. Use Query Group Viewpoint gortjet to change the throttle limit temporally.

正解：A

解説：
Use Query Monitor Viewpoint portlet to change query workloads.
Explanation:
The Flex Throttle option allows the system to temporarily adjust workload concurrency limits based on system conditions. This provides more flexibility when handling spikes in query concurrency, without permanently modifying the established workload limits. Flex Throttle is ideal for handling temporary peaks in activity, helping to smooth out delays while keeping the core concurrency limits intact.
Option A (Use a system throttle) would enforce strict concurrency limits but doesn't provide the flexibility needed in this scenario, where the client is trying to avoid modifying existing limits.
Option B (Use Query Group Viewpoint portlet to change the throttle limit temporarily) suggests manually adjusting the throttle limit, which is not desirable in this case as the limits have been carefully chosen.
Option D (Use Query Monitor Viewpoint portlet to change query workloads) would involve changing the way queries are handled or prioritized but does not address the need to keep concurrency limits unchanged while still dealing with temporary delays.
Thus, Flex Throttle (Option C) provides the best solution to assist the client without altering the concurrency limits permanently.

質問 # 38
An Administrator has been presented with these performance metrics from the DBQLOGTBL table for four queries:

The Administrator needs to identify which query is suspected to be causing a full table scan or large redistribution.
Which query is producing this result?

A. QRY_C because of UII
B. QRY_A because of PJI
C. QRY_B because of IO SKEW
D. QRY_D because of CPU SKEW

正解：C

解説：
IO SKEW refers to an uneven distribution of I/O operations across AMPs, which can occur during large redistributions or full table scans, as data needs to be read from or written to the entire table. High IO skew indicates that some AMPs are handling significantly more I/O than others, which is often a sign of inefficient data distribution or full table scanning.
QRY_B has an IO SKEW value of 2.76, which is much higher than the other queries, suggesting that it is likely performing a full table scan or large redistribution, as this would result in uneven I/O across AMPs.
CPU SKEW (as seen in QRY_D) could indicate an issue with CPU load balancing, but it doesn't necessarily suggest a full table scan or redistribution.
UII (Utility Impact Index) and PJI (Product Join Index) are also metrics that might indicate query inefficiencies, but the high IO SKEW in QRY_B is the most direct indicator of a full table scan or large redistribution.
QRY_B is the query suspected of causing the full table scan or large redistribution due to its high IO SKEW value.

質問 # 39
......

当社は、TDVAN5の実際の質問が最も信頼できるものであることを保証できます。約10年の開発を経て、高品質のTDVAN5学習教材を開発し、すべてのお客様に忍耐するために努力を払っています。さらに、TDVAN5学習資料が古くなっているのではないかと思われるかもしれません。 TDVAN5の実際の質問は高速で更新されます。また、TDVAN5テストガイドを1年間無料でお楽しみいただけますので、時間とお金を節約できます。最新のTDVAN5学習資料をメールでお送りします。

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TeraData TDVAN5復習範囲: HCIA-Datacom V1.0 - Pass4Test練習 &プロフェッショナル認定コース

TeraData TDVAN5 認定試験の出題範囲：

TDVAN5日本語試験情報 & TDVAN5日本語対策

TeraData HCIA-Datacom V1.0 認定 TDVAN5 試験問題 (Q34-Q39):

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