TERADATA CERTIFICATION TDVAN5 EXAM PDF

TeraData Certification TDVAN5 exam pdf

TeraData Certification TDVAN5 exam pdf

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TeraData HCIA-Datacom V1.0 Sample Questions (Q46-Q51):

NEW QUESTION # 46
An Administrator has been asked to improve the response time of the workloads in the tactical tier. Workloads are in all tiers of TASM. They are at CPU and I/O capacity, and they have AWT reserved for tactical. The Administrator begins by analyzing the data and the workload prioritization.
Which action should the Administrator take?

  • A. Increase the relative weight of the tactical tier.
  • B. Adjust the limits of awt concurrency in the tactical tier using DBS control.
  • C. Increase the number of AWTs.
  • D. Disable the expedite option of the workloads in the SLG Tier level 1.

Answer: A

Explanation:
In a TASM (Teradata Active System Management) environment, the relative weight of different tiers (such as tactical, SLG, or background) determines the amount of CPU and I/O resources allocated to each tier. Increasing the relative weight of the tactical tier would prioritize these workloads, giving them more resources relative to other tiers and improving their response time.
Option B (Disable the expedite option of the workloads in the SLG Tier level 1) might alleviate some resource pressure from SLG Tier 1 workloads, but it doesn't directly improve the prioritization or resource allocation for tactical workloads.
Option C (Increase the number of AWTs) is not applicable because the system already has reserved AWTs for tactical workloads, and AWT (AMP Worker Task) availability is likely not the bottleneck here. Simply increasing the number of AWTs without addressing the core CPU and I/O resource allocation will not improve tactical workload response.
Option D (Adjust the limits of AWT concurrency in the tactical tier using DBS control) might provide marginal improvements but won't have a significant impact on overall resource prioritization. It focuses more on concurrency management than directly improving workload performance through resource allocation.


NEW QUESTION # 47
Which spool threshold can an Administrator set to define workload management exception criteria?

  • A. Maximum Spool Rows
  • B. Hot AMP Spool
  • C. Max Spool Space By AMP
  • D. Spool Skew

Answer: D

Explanation:
Spool Skew is a threshold that an Administrator can set in workload management to detect and manage uneven distribution of spool space usage across AMPs (Access Module Processors). When spool skew exceeds a certain threshold, it can trigger exception handling or corrective actions, helping to prevent performance degradation caused by unbalanced resource utilization.
The other options are less commonly used for defining workload management exception criteria:
Maximum Spool Rows: This is not a standard threshold for workload management.
Hot AMP Spool: While this refers to uneven spool space usage on a specific AMP, spool skew is the more appropriate term and metric used for setting thresholds.
Max Spool Space By AMP: This isn't a standard workload management threshold. Spool space limits are generally applied system-wide or per user, not by AMP.


NEW QUESTION # 48
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_B because of IO SKEW
  • B. QRY_D because of CPU SKEW
  • C. QRY_C because of UII
  • D. QRY_A because of PJI

Answer: A

Explanation:
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.


NEW QUESTION # 49
An Administrator manages a Vantage system that experiences large loads and updates during the night, on weekdays. On Saturday night, significant analytical processing occurs using the data from the prior weeks. The results of this processing are saved to support rapid reporting in the following week.
The business requires this Vantage system to be available as soon as possible in case of a catastrophic system failure.
Which backup strategy meets this need?

  • A. Weekly cumulative backup on Sunday and Wednesday, and delta backups on the remaining days
  • B. Weekly full backup, cumulative backups on Tuesday and Friday, and delta backups on the remaining days
  • C. Daily delta backups
  • D. Daily full backups

Answer: B

Explanation:
This strategy strikes a balance between minimizing recovery time and reducing the overall storage and performance impact during backups.
Weekly full backup ensures that a complete copy of the data is available at the start of the week, which is critical for quick recovery in the event of a catastrophic system failure.
Cumulative backups on Tuesday and Friday ensure that any changes made since the last full backup are captured without needing to apply multiple delta backups, reducing the time required for restoration.
Delta backups on other days provide incremental backups of the system with minimal performance impact, ensuring the system is consistently backed up without using excessive resources.


NEW QUESTION # 50
Which workload management technique should the Administrator use to reject all QueryGrid queries during a pre-defined critical batch state?

  • A. A filter that excludes the following functions:
    TD_SYSFNLIB.QGInitiatorExport
    TD_SYSFNLIB.QGInitiatorlmport
    TD_SYSFNLIB.QGRemoteExport
    TD_SYSFNLIB.QGRemotelmport
  • B. A filter that includes the following functions:
    TD_SYSFNLIB.QGInitiatorExport
    TD_SYSFNLIB.QGInitiatorlmport
    TD_SYSFNLIB.QGRemoteExport
    TD_SYSFNLIB.QGRemotelmport
  • C. An exception that excludes the following Foreign Servers:
    TD_SYSFNLIB.QGInitiatorExport
    TD_SYSFNLIB.QGInitiatorlmport
    TD_SYSFNLIB.QGRemoteExport
    TD_SYSFNLIB.QGRemotelmport
  • D. An exception that includes the following Foreign Servers:
    TD_SYSFNLIB.QGInitiatorExport
    TD_SYSFNLIB.QGInitiatorlmport
    TD_SYSFNLIB.QGRemoteExport
    TD_SYSFNLIB.QGRemotelmport

Answer: D

Explanation:
In this case, using an exception with the Foreign Servers related to QueryGrid functions will prevent queries involving those foreign servers from running. This is a typical method to block or reject specific workloads during critical times, such as a batch processing window.
Exceptions in workload management are used to define specific conditions under which queries or workloads should be rejected or managed differently. By including these QueryGrid-related functions in an exception, the administrator ensures that any QueryGrid queries involving the listed foreign servers will be rejected during the critical batch state.
Options B and D, which mention filters, are not appropriate for rejecting queries. Filters are used for monitoring or routing purposes, not for outright rejection of workloads.
Option C, which suggests excluding the foreign servers in an exception, would not achieve the goal, as this would mean those queries are not affected by the exception. The goal here is to include these functions in an exception to actively reject them.


NEW QUESTION # 51
......

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