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TeraData TDVAN5 Exam Syllabus Topics:

Topic
Details

Topic 1

Performance Management: This section of the exam evaluates the skills of TeraData database administrators. It focuses on strategies for managing statistics, implementing DBQL logging, and using performance data to troubleshoot and resolve system issues.

Topic 2

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.

Topic 3

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.

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TeraData HCIA-Datacom V1.0 Sample Questions (Q14-Q19):

NEW QUESTION # 14
An Administrator manages a Vantage system that is continually updated. The system is critical to the business and must be available as much as possible. The Administrator decides to use a backup strategy that will allow changes to tables while a backup is in progress.
Which backup strategy should be used?

A. Skip statistics
B. Offline
C. Dictionary Only
D. Online

Answer: D

Explanation:
An Online backup strategy allows the database to remain accessible and operational while the backup is taking place. This means that users can continue to modify data, and the system can remain available without requiring downtime. It is a common approach for mission-critical systems that need to maximize uptime.
Offline would require the system or certain tables to be unavailable during the backup process, which is not suitable for a system that needs to remain available.
Skip statistics refers to skipping the backup of statistics on database objects and does not relate to whether the system can be updated during the backup.
Dictionary Only involves backing up only the system catalog or dictionary data, not the actual table data, and would not fulfill the requirement of a comprehensive backup while allowing updates.

NEW QUESTION # 15
The Administrator is receiving complaints that a business application is taking a very long time to refresh the screen. After analyzing the WD-Report workload, the Administrator notices that several short select statements, with estimated processing time of less than 0.5 seconds, are waiting in the delay queue. The workload WD-Report is placed in Time Share Medium and managed by TIWM.
How should the Administrator solve this performance issue?

A. Create a throttle to reduce flow control.
B. Create a new workload for SELECT statements based on the estimated processing time, and place in the Time Share TOP.
C. Define a new state for SELECT statements based on estimated processing time and active the time share decay.
D. Place the WD-Report workload in the Service Level Goal (SLG) tier with 50% relative weight.

Answer: B

Explanation:
The select statements in the WD-Report workload are being delayed even though their processing times are short (less than 0.5 seconds), which is leading to slow screen refreshes.
By creating a new workload specifically for these short-running SELECT statements, the administrator can ensure that they are processed more quickly, without being delayed by other workloads.
Placing this new workload in Time Share TOP will give it a higher priority, ensuring these short queries are executed promptly, improving the responsiveness of the business application.
Other options are less effective because they either don't directly target the issue of short query delays (B), or may not appropriately prioritize these queries (A, C).

NEW QUESTION # 16
Which QueryGrid connector can only be a target?

A. Oracle
B. Hive
C. Teradata
D. Presto

Answer: A

Explanation:
In QueryGrid, the Oracle connector can only be used as a target, meaning data can be sent to an Oracle database but not sourced from it for querying in Teradata Vantage.
Hive, Presto, and Teradata connectors can act as both source and target, allowing data to be retrieved from or sent to these systems as part of a QueryGrid query.
Thus, Oracle is the connector that can only be a target in QueryGrid.

NEW QUESTION # 17
There is a call center application that repetitively sends tactical queries to Vantage These queries use a few small tables that are joined on the primary index column.
The following maps are defined in the system:
* TD_GlobalMap
* TD_Map1
* TD_DataDictionaryMap
* TD_1AmpSparseMap_1Node
What can be done to optimize these queries?

A. Assign these tables to TD_1AmpSparseMap_1Node using the same colocation name for every table
B. Assign these tables to TD_Map1 using the same colocation name for every table.
C. Assign these tables to TD_1AmpSparseMap_1Node using different colocation names for each table.
D. Assign these tables to TD_Map1 using different colocation names for each table.

Answer: A

Explanation:
Example:
TD_1AmpSparseMap_1Node is a sparse map that assigns the data to a single AMP (or a few AMPs), and using the same colocation name ensures that the tables are collocated on the same AMP. This helps in efficient joining because no data redistribution is required between AMPs when tables are joined on the primary index.
Using different colocation names for each table (options A and D) would place the tables on different AMPs, leading to less efficient joins since data would need to be shuffled between AMPs.
TD_Map1 is a predefined map in the system but does not specifically optimize small, frequently accessed tables in the same way that TD_1AmpSparseMap_1Node does, which is more suitable for these scenarios.
Thus, using the same colocation name within the TD_1AmpSparseMap_1Node ensures that the joins are AMP-local, optimizing the repetitive tactical queries.

NEW QUESTION # 18
An Administrator has been given a task to generate a list of users who have not changed their password in the last 90 days.
Which DBC view should be used to generate this list?

A. DBC.USERSV
B. DBC.LOGONOFFV
C. DBC.SECURITYDEFAULTSV
D. DBC.ACCESSLOGV

Answer: A

Explanation:
DBC.USERSV contains information about users, including the passwordlastmodified column, which records the date and time the user last changed their password. By querying this view, the Administrator can identify users who have not updated their password within the specified time frame (in this case, 90 days).
Option A (DBC.LOGONOFFV) logs user logon and logoff events, but it does not track password changes.
Option C (DBC.SECURITYDEFAULTSV) contains system-wide security defaults, but it does not track individual user password activity.
Option D (DBC.ACCESSLOGV) logs access control events, like who accessed which database objects, but it doesn't track password changes either.
Therefore, DBC.USERSV is the appropriate view to use for this task.

NEW QUESTION # 19
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