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TeraData TDVAN5 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	Integration: This section tests the skills of database administrators in utilizing integration tools like QueryGrid and NOS. It covers the benefits, features, and functionality of QueryGrid, the database objects supporting its implementation, and the performance implications of accessing NOS and foreign servers.
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.
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 (Q45-Q50):

NEW QUESTION # 45
A group of batch queries that rely on QueryGrid to source data from a cloud Vantage system has failed and requires urgent investigation.
Which Viewpoint portlet should be used to initially investigate the reason for this problem?
A group of batch queries that rely on QueryGrid to source data from a cloud Vantage system has failed and requires urgent investigation.
Which Viewpoint portlet should be used to initially investigate the reason for this problem?

A. Alert Viewer
B. Completed Queries
C. Query Spotlight
D. Productivity

Answer: A

Explanation:
The Alert Viewer portlet in Viewpoint is designed to show system alerts and failures. Since the issue is urgent and involves failed queries using QueryGrid, the Alert Viewer is the appropriate place to start the investigation. It will display any alerts or failures related to QueryGrid, system connectivity, or resource constraints, providing insight into what might have caused the batch queries to fail.
Option A (Query Spotlight) is more focused on analyzing the performance of individual queries but may not directly highlight system or connection issues related to QueryGrid failures.
Option C (Productivity) gives insights into system usage and workload management, but it's not the primary tool for troubleshooting failed queries.
Option D (Completed Queries) shows details about successfully completed queries but is not the best place to start for investigating failed queries that require urgent attention.

NEW QUESTION # 46
At a large car manufacturer, huge volumes of diagnostic data for cars are collected in the following table:

The master data for each car is stored in the following table:

Many reports require data from both tables by joining via column VehicleId.
A very frequently performed query on the system returns the number of events by FaultCode and ModelType. This query consumes many CPU and I/O resources each day.
Which action should the Administrator take to improve the runtime and resource consumption for this query?

A. Use an aggregate join index with columns FaultCode, ModelType, as well as an appropriate aggregate function.
B. Use a sparse join index with columns FaultCode and ModelType, as well as an appropriate filter function.
C. Use a single table join index on VehicleEvent hashed by FaultCode and another single table join index on Vehicle hashed by ModelType.
D. Use a NUSI on VehicleEvent.FaultCode and a NUSI on Vehicle.ModelType

Answer: A

Explanation:
To improve the runtime and resource consumption for a query that returns the number of events by FaultCode and ModelType from the two tables VehicleEvent and Vehicle, the most appropriate action would be:
A . Use an aggregate join index with columns FaultCode, ModelType, as well as an appropriate aggregate function.
Aggregate Join Index: This type of join index will pre-join the tables VehicleEvent and Vehicle on VehicleId and store the results of frequently queried aggregations (in this case, counts by FaultCode and ModelType). It would significantly reduce the need to perform full joins and aggregations at query time, saving both CPU and I/O resources.
Option B: A sparse join index is useful for selective filtering but does not offer aggregation. Since the query involves counting (aggregation), the aggregate join index is more suitable.
Option C: Creating Non-Unique Secondary Indexes (NUSIs) on FaultCode and ModelType would help speed up searches for those columns, but it won't help with the pre-aggregation or frequent joins that are consuming the majority of the resources.
Option D: Creating separate single table join indexes for FaultCode and ModelType on different tables won't improve the performance of the aggregation and join-heavy query, because the problem stems from the frequent joins and aggregations, not just individual table access.

NEW QUESTION # 47
Which description accurately characterizes the use of external authentication for Vantage?

A. Single Sign-On is available with LDAP authentication.
B. The directory username must match a database username.
C. User authorization roles can also be supplied by the directory.
D. External authentication is not permitted for mainframe clients.

Answer: C

Explanation:
This is because external authentication systems like LDAP or Active Directory can supply both authentication (verifying the user's identity) and authorization (defining what the user is allowed to do) roles for users.

NEW QUESTION # 48
A middle-tier application server logs on to the database as TrustedUser and submits requests on behalf of application end users. The server is shared by Finance and Human Resources groups and uses ProxyUser query band to identify end users to the database. Each group needs access to its own sensitive data, so the Administrator has created two separate roles with the appropriate permissions.
What is the best way to control access to each group's sensitive data?

A. Include both roles in the grant connect through statement, and use ProxyRole in the query band to select the appropriate role.
B. Define the roles as external and use the ProxyRole query band to specify one role.
C. Grant both roles to TrustedUser, and add the ProxyRole query band to specify one role.
D. Specify the appropriate role for each end user in a grant connect through statement.

Answer: A

Explanation:
The GRANT CONNECT THROUGH statement allows the TrustedUser to act on behalf of multiple end users while securely connecting to the database. By granting both roles (Finance and Human Resources) in this statement, you allow the ProxyUser to switch between roles depending on the query band's ProxyRole value.
Using the ProxyRole query band, the application can specify which role (Finance or Human Resources) should be used for each specific request. This approach provides flexibility, as the application can dynamically assign the appropriate role to the user based on the query context.
Option A (Defining roles as external and using ProxyRole) wouldn't fully address the need to manage multiple roles dynamically for a shared server.
Option B (Granting both roles to TrustedUser) doesn't allow for flexible role switching on a per-request basis without the use of GRANT CONNECT THROUGH and could lead to over-granting of permissions.
Option C (Specifying a role for each end user in GRANT CONNECT THROUGH) isn't as flexible as allowing both roles to be used and dynamically selected through the query band.
Thus, Option D is the most appropriate solution, as it provides both security and flexibility, enabling the application to use the correct role based on the ProxyRole query band for each query submitted.

NEW QUESTION # 49
There is corruption in a table in the DBC database.
Which action should the Administrator take to restore the table?

A. Perform a SYSINIT, and restore the corrupted table.
B. Perform a SYSINIT, and restore the entire system.
C. Set the corrupted AMP offline, and restore the corrupted table.
D. Set the corrupted AMP offline, and restore the entire system.

Answer: C

Explanation:
If a table in the DBC (Data Dictionary) database is corrupted, the proper approach is to set the corrupted AMP offline to isolate the issue, and then restore the corrupted table from a backup. This limits the scope of the recovery to only the affected AMP and table, minimizing the impact on the rest of the system.
Perform a SYSINIT, and restore the corrupted table: A SYSINIT is a full system initialization and should only be done in extreme cases, as it wipes the entire system. This is too drastic for table-level corruption.
Set the corrupted AMP offline, and restore the entire system: Restoring the entire system is unnecessary if only one table is corrupted.
Perform a SYSINIT, and restore the entire system: This would be an extreme and time-consuming option, only used if the entire system is corrupted.

NEW QUESTION # 50
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