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TeraData TDVAN5 Exam Syllabus Topics:

Topic
Details

Topic 1

User Administration: This section evaluates the skills of system administrators in meeting user security requirements through roles and proxy access configurations. Candidates will also learn about the functionality and benefits of profiles, as well as the key attributes that should be set for a new user.

Topic 2

Database Management: This section tests the skills of database administrators in managing access rights and advanced analytic functions. It covers logging benefits, privilege types, and the impact of changing global parameters on user sessions.

Topic 3

Monitoring Vantage: This section of the exam measures the skills of IT professionals such as system administrators. It covers how to effectively use Viewpoint to investigate system conditions, monitor external queries, and administer both Viewpoint and monitored systems.

Topic 4

Security Management & Auditing: This section of the exam measures the skills of such database managers. It covers the features, functionality, and benefits of access logging and advanced security configurations.

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TeraData HCIA-Datacom V1.0 Sample Questions (Q33-Q38):

NEW QUESTION # 33
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 a system throttle.
B. Use Query Group Viewpoint gortjet to change the throttle limit temporally.
C. Use Flex Throttle option.

Answer: C

Explanation:
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.

NEW QUESTION # 34
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_D because of CPU SKEW
B. QRY_C because of UII
C. QRY_A because of PJI
D. QRY_B because of IO SKEW

Answer: D

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 # 35
An update of a very large table was in progress when the system experienced an unplanned restart. After restarting, the system is available, but Recovery Manager shows it may be many hours before a large table is available for use. The Administrator needs to make the table available sooner.
Which option should be used to achieve this goal?

A. Cancel the rollback, and restore the table from backup.
B. Drop the transaction journal, and set RollbackPriority to TRUE.
C. Use MultiLoad to execute a DROP of the table, and restore it from backup.
D. Use Workload Manager to elevate the rollback to the SLG tier.

Answer: A

Explanation:
When a system experiences an unplanned restart during an update operation, the rollback process can take a significant amount of time, especially for very large tables. Canceling the rollback will stop the system from attempting to undo the incomplete transactions.
After canceling the rollback, the table can be restored from a backup, which is a much faster way to recover the table and make it available for use again.
The other options are less effective:
Use Workload Manager to elevate the rollback to the SLG tier: While this may prioritize the rollback, it doesn't significantly reduce the time required for a large table rollback.
Use MultiLoad to execute a DROP of the table, and restore it from backup: MultiLoad is not typically used for dropping tables, and this adds unnecessary complexity.
Drop the transaction journal, and set RollbackPriority to TRUE: Dropping the transaction journal could lead to data inconsistencies, and setting RollbackPriority to TRUE does not directly make the table available sooner.

NEW QUESTION # 36
An Administrator needs to enforce a security policy which prohibits the use of an application's username from being used by certain query clients.
Which workload management feature should the Administrator use?

A. Exception
B. Utility Session
C. Flex Throttle
D. Filter

Answer: D

Explanation:
Filters in Teradata workload management allow the Administrator to define rules that restrict or block certain types of queries or connections based on specific criteria, such as the username, query client, or other attributes. In this case, the Administrator can use a filter to prevent queries from specific clients using the application's username, enforcing the security policy.
Option A (Flex Throttle) is used to manage query concurrency and system resources dynamically but is not designed to enforce security policies like user restrictions.
Option B (Utility Session) controls the number of utility sessions but does not help with filtering query clients based on usernames.
Option C (Exception) handles query workload exceptions based on certain thresholds or behaviors but doesn't directly enforce user or client restrictions.

NEW QUESTION # 37
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 number of AWTs.
B. Adjust the limits of awt concurrency in the tactical tier using DBS control.
C. Increase the relative weight of the tactical tier.
D. Disable the expedite option of the workloads in the SLG Tier level 1.

Answer: C

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 # 38
......

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