SCA-C01 Exam Dumps - Tableau Desktop Certified Associate Questions and Answers

Tableau Server’s installer configures process instances based on hardware and deployment type (single-node vs. multi-node). For a single-node installation with 4 cores, we need to consider thedefault process topology. Let’s break this down exhaustively:

Key Processes:

Gateway: Handles incoming requests (1 instance).

Application Server (VizPortal): Manages UI and sessions (1 instance).

VizQL Server: Renders visualizations (2 instances).

Backgrounder: Runs extract refreshes, subscriptions (1 instance).

Data Server: Manages data connections (1 instance).

File Store: Stores extracts (1 instance).

Repository: Metadata database (1 instance, active).

Cluster Controller, Cache Server, etc.: Supporting processes (typically 1 each).

Default Configuration:

On a single-node install, Tableau sets1 instance per processunless specified otherwise, except for VizQL, which defaults to 2.

The installer doesn’t scale instances linearly with cores (e.g., 4 cores ≠ 4 instances). Post-install, TSM can adjust this (e.g., tsm topology set-process), but the question asks for theinstalled default.

Minimum hardware (8 cores, 32 GB RAM) suggests higher defaults, but 4 cores still triggers a minimal setup.

Option B (1): Correct with Caveat.

Most processes (e.g., Backgrounder, Gateway, Data Server) default to 1 instance on install, regardless of 4 cores.

VizQL defaults to 2, but the question’s phrasing ("each process") implies a general rule. Historically (and per docs), 1 is the baseline for most, with VizQL as the exception.

Interpretation: Assuming "each" means the typical case, 1 fits most processes on a 4-core single-node setup.

Option A (2): Incorrect. Only VizQL defaults to 2; others don’t.

Option C (8): Incorrect. Far exceeds defaults—8 cores might justify more, but not 4.

Option D (4): Incorrect. Not tied to core count by default; manual config would be needed.

Why This Matters: Understanding defaults aids capacity planning—4 cores is below production minimum (8), so performance tuning may be needed post-install.

Tableau Server consists of multiple processes managed by TSM. When you stop Tableau Server (e.g., via tsm stop), most application processes halt, but some TSM-specific processes remain active to manage the server’s infrastructure. Let’s examine each:

TSM Processes: These include the Administration Controller, Administration Agent, and License Manager, which handle configuration, monitoring, and licensing.

Application Processes: These include VizQL Server, Backgrounder, Data Server, etc., which deliver Tableau’s core functionality and stop when the server is stopped.

When tsm stop is executed:

TheAdministration Controller(port 8850) continues running to manage TSM operations (e.g., restarts, status checks).

TheLicense Managerremains active to validate licenses and ensure compliance, even when the server is offline.

Application processes like VizQL Server and Backgrounder shut down, as they’re tied to user-facing services.

Option B (License Manager): Correct. It persists to handle licensing tasks, ensuring the server can restart without license issues.

Option D (Administration Controller): Correct. It’s the core TSM process, always running to accept commands and manage the server state.

Option A (VizQL Server): Incorrect. VizQL stops, as it renders visualizations for users—an application process tied to active server operation.

Option C (Backgrounder): Incorrect. Backgrounder stops, as it processes background tasks (e.g., extract refreshes), which halt when the server is down.

Why This Matters: Understanding which processes persist helps administrators troubleshoot and manage server lifecycle events effectively.

Tableau Server’s performance and stability depend on dedicated resources and proper configuration. Running additional software on the same server is the most likely to cause problems because:

Resource contention: Tableau Server requires significant CPU, RAM, and disk I/O. Other software (e.g., databases, web servers) can compete for these resources, leading to slowdowns, crashes, or failed tasks.

Port conflicts: Tableau uses specific ports (e.g., 80, 443, 8850), and other applications might interfere.

Security risks: Additional software increases the attack surface, potentially compromising Tableau Server.

Tableau recommends running the server on dedicated hardware without unrelated applications.

Option A (Running additional software on the server): Correct. This is a common cause of performance issues and is explicitly discouraged in Tableau’s best practices.

Option B (Separating the Backgrounder and VizQL processes to different machines): Incorrect. This is a supported multi-node configuration that can improve performance, not cause problems, if properly set up via TSM.

Option C (Configuring the server to use a static IP address): Incorrect. A static IP is recommended for Tableau Server to ensure consistent network access, so it’s unlikely to cause issues.

Option D (Using a non-default installation path): Incorrect. While not default, a custom path is supported (via TSM or installer options) and unlikely to cause problems if permissions and disk space are adequate.

Tableau Desktop and Tableau Server have versioning considerations when publishing content, particularly regarding compatibility between older Desktop versions (e.g., 10.5) and newer Server versions (e.g., 2020.1). Let’s break this down step-by-step:

Version Context: Tableau Desktop 10.5 was released in 2017 and used the .tde (Tableau Data Extract) format for extracts. Tableau Server 2020.1, released in 2020, introduced the .hyper extract format (starting with version 10.5, but fully standardized later). When publishing from an older Desktop version to a newer Server version, Tableau ensures backward compatibility but may upgrade certain components.

Publishing Process: With a Creator site role and Publisher permissions, you have the rights to publish workbooks to the specified project. Tableau Server accepts workbooks from older Desktop versions (e.g., 10.5) and upgrades them to the current Server version (2020.1) duringpublishing. This process is seamless for the workbook itself, but extracts require special handling.

Extract Handling: If the workbook contains embedded .tde extracts (stored within the .twb or .twbx file), Tableau Server 2020.1 converts these to .hyper format upon publishing. This conversion is necessary because .hyper replaced .tde as the default extract engine starting in Tableau 10.5 and beyond, offering better performance and scalability. During this process, Tableau Desktop or Server displays a warning to inform the user of the upgrade, as it’s a one-way conversion (you can’t revert to .tde on the Server).

Now, let’s evaluate the options:

Option A (You will successfully publish without any errors or warnings): Incorrect. While the publishing succeeds, a warning about the .tde to .hyper conversion appears if the workbook contains embedded extracts. Without extracts, no warning occurs, but the question’s context implies extracts are likely involved (common in visualizations).

Option B (Error message: unable to publish to a newer version): Incorrect. Tableau supports publishing from older Desktop versions to newer Server versions. There’s no outright error blocking this; compatibility is maintained.

Option C (Warning: embedded .tde extracts will be upgraded to .hyper): Correct. This is the precise warning displayed when a workbook with .tde extracts is published to a Server version that uses .hyper. It ensures the user is aware of the format change, which might affect extract refresh schedules or performance expectations.

Option D (Warning: workbook will be upgraded to a new version): Partially correct but less specific. The workbook is upgraded to 2020.1 compatibility, but the warning focuses on the extract format change (.tde to .hyper), not the workbook version generically. Option C is more accurate.

Why This Matters: The .tde to .hyper shift improves query performance and supports larger datasets, but users need to know about it for planning (e.g., extract refresh schedules might need adjustment). The warning ensures transparency.

The VizQL Server process in Tableau Server handles rendering visualizations and processing queries for users viewing dashboards or workbooks. During installation, Tableau Server automatically configures the number of VizQL instances based on the number of processor cores on the machine, following this rule:

Default VizQL instances = 2 per node, unless manually adjusted post-installation.

In multi-node setups, additional instances may be added based on core count, but the question specifies a single server with 16 cores.

The installer does not scale VizQL instances linearly with core count by default (e.g., it doesn’t set 1 instance per 4 cores). Instead:

For a single-node installation, the default is 2 VizQL instances, regardless of core count (assuming the minimum hardware requirements are met: 8 cores, 32 GB RAM).

Administrators can later adjust this using TSM (e.g., tsm topology set-process) based on performance needs, but the question asks for the default configured by the installer.

Option A (4): Incorrect. Four instances might be configured manually for a 16-core server, but it’s not the default.

Option B (6): Incorrect. Six instances exceed the default for a single node.

Option C (10): Incorrect. Ten instances are far beyond the default and would require manual configuration.

Option D (2): Correct. The installer sets 2 VizQL instances by default on a single-node installation.

Tableau Server uses internal secrets (tokens) for secure communication between its processes (e.g., Repository, File Store). These are automatically generated during installation and can be regenerated if compromised or for security maintenance. The command to update these is:

tsm security regenerate-internal-tokens: This regenerates the internal security tokens, ensuring all processes use the new tokens after a restart.

Option C (tsm security regenerate-internal-tokens): Correct. This is the documented command for updating internal secrets.

Option A (tsm data-access caching set -r 1): Incorrect. This command configures caching behavior, not security tokens.

Option B (tsm licenses refresh): Incorrect. This refreshes license data, unrelated to internal secrets.

Option D (tsm security validate-asset-keys): Incorrect. This validates encryption keys for assets, not internal tokens.