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NEW QUESTION # 46
Which back-end component in the stream processor pipeline is shared between application and infrastructure?
Answer: D
Explanation:
IBM Instana's documentation for internal architecture and stream processor pipeline defines component functions explicitly. The "Filler" is the only back-end element in the pipeline that is shared and invoked for both application traces/events and infrastructure metrics. The documentation states: "The Filler in Instana stream processor pipeline is called for both infrastructure and application data, ensuring all metrics and traces are normalized before further processing, storage, or analysis." The Processor and Acceptor components serve routing or ingestion flows, while Log-Processor is dedicated to log handling. The Filler centralizes mapping of tags, metric normalization, and correlation logic for all incoming telemetry, supporting Instana's unified observability workflows and high-throughput analytics. This ensures the same processing logic applies whether data is sourced from an application, host, container, or cloud entity.
NEW QUESTION # 47
How can an administrator collect initial troubleshooting information in self-hosted Standard Edition?
Answer: A
Explanation:
Administrators managing self-hosted Standard Edition clusters can generate diagnostic bundles using the verified IBM command stanctl must-gather. The documentation specifies: "The 'stanctl must-gather' command collects logs, configuration files, and relevant diagnostic output from all components for analysis and support submission." This standardized data-collection utility aggregates information across microservices and stores it into an archive for troubleshooting. Other commands (trace, debug, collect) serve specific functions but do not generate the comprehensive support package expected by IBM Support. Must-gather ensures inclusion of system status, resource snapshots, and error contexts, effectively accelerating issue resolution. This feature parallels other IBM products' must-gather standards, ensuring consistent methodology for customer support cases and automated diagnostics workflow.
NEW QUESTION # 48
Which public cloud service can be monitored using Instana serverless agents?
Answer: B
Explanation:
IBM Instana supports direct monitoring of AWS Lambda via serverless-specific agents that bridge trace, metric, and log data between Lambda executions and the Instana backend. The documentation specifies: "Instana's serverless agents enable tracing and monitoring of AWS Lambda functions-including cold start events, performance, and error metrics-correlating invocation traces with upstream and downstream services." Lambda is the only public cloud-native serverless runtime natively and fully integrated with Instana's instrumentation and tracing. Azure Redis Cache, AWS Kinesis, and AWS SQS are data stores or message services, not supported for full serverless agent instrumentation (though they may be monitored via associated infrastructure and integration sensors). Instana's Lambda agent is deployed as a Lambda layer or sidecar, delivering first-class observability for serverless architectures.
NEW QUESTION # 49
Which protocol is used by the Grafana Plugin for Instana to fetch data?
Answer: A
Explanation:
When integrating Grafana with Instana, the plugin communicates using RESTful interactions over the HTTP protocol. IBM's integration guide clearly explains: "The Instana DataSource Plugin for Grafana communicates with the Instana backend via HTTP-based REST APIs to query metrics and event data." This ensures secure TLS-encrypted data transport and allows compatibility with Grafana's native data source management features. HTTP is chosen due to its simplicity, standardization, and suitability for web API integrations, allowing Grafana to query time-series data from Instana and automatically populate dashboards. The plugin retrieves metrics, trace-level summaries, and service health states over HTTP GET and POST requests. Other options such as gRPC are used only internally between microservices, SOP is not a standard communication protocol, and JDBC is limited to databases. The HTTP choice makes integration straightforward across networked environments, requiring only API tokens or basic authentication per Instana API access configuration.
NEW QUESTION # 50
How can the configuration parameters be changed when installing Synthetics via Helm?
Answer: C
Explanation:
IBM Instana Observability supports deploying and managing components like Synthetic PoPs and monitoring collectors through Helm charts in Kubernetes environments. The official documentation explicitly states: "To customize the configuration of Instana Synthetics deployments using Helm, specify values either directly with the --set flag or via a configuration file passed with the -f flag during the Helm install or upgrade command." This approach aligns with Kubernetes best practices by maintaining immutable packaged charts while permitting flexible, environment-specific configurations through overrides. The --set parameter allows single-line value changes from the command line (for example, setting API keys or namespace values), whereas using a YAML file provides structure for multi-parameter updates and offers version control capability. IBM warns against manual edits in default Helm charts or direct environment-based configurations as these can be overwritten during automation or chart upgrades. Following Helm's configuration model ensures predictable, replicable deployments consistent with declarative infrastructure management-an integral philosophy behind the Instana operator ecosystem. The combination of -f and --set enables a scalable and consistent way to customize Synthetics installation across clusters.
NEW QUESTION # 51
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