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NEW QUESTION # 52
Which two thresholds can be chosen in Advanced Mode when setting up a Smart Alert?
Answer: B,D
Explanation:
Instana Smart Alerts provide intelligent, context-aware alerting capabilities. In Advanced Mode, administrators can choose between two distinct threshold types: Static and Adaptive. The IBM Instana documentation details: "Advanced Mode supports both static and adaptive thresholds, letting users define explicit limit values or rely on adaptive baselines derived from historical data." Static thresholds are fixed, user-defined values best suited for predictable workloads or regulatory uptime scenarios. Adaptive thresholds use machine learning on time-series historical behavior to automatically adjust boundaries when traffic patterns or operating baselines change. This significantly reduces false positives and ensures that alerts reflect true anomalies rather than normal variance. Both threshold types can trigger multi-level alerts and integrate with escalation policies. Static measures remain critical for SLIs requiring consistent control, while adaptive techniques optimize monitoring of microservices under fluctuating loads. IBM emphasizes combining these in practice to balance detected sensitivity across mixed systems, leveraging AI-driven dynamic configurations in adaptive mode as a key differentiator in its observability platform.
NEW QUESTION # 53
Which logging framework is used by Instana agents?
Answer: C
Explanation:
IBM Instana Observability agents use Log4j2 as their primary logging framework for system activity, sensor status, and diagnostic output. The documentation confirms: "The default logging framework for Instana agents is Apache Log4j2, providing structured log output, multi-level verbosity, and integration with most enterprise log aggregation environments." Log4j2 is a standard for Java-based environments, supporting dynamic log rotation, filtering, and formatting. Instana agent log files follow Log4j2 conventions, enabling easy parsing by SIEM tools and adapters. Serilog (A) is a .NET framework, not used by Instana agents. JSNLog (C) is for JavaScript applications, while Loggly (D) is a SaaS log analytics platform. Log4j2's mature design lets administrators tune performance, verbosity, and log destinations in rich deployment scenarios, directly aligning with best practices in Instana's monitoring ecosystem. This was reconfirmed in agent reference guides and environment setup sections.
NEW QUESTION # 54
What is the default value of the agent log level?
Answer: B
Explanation:
The Instana agent uses configurable logging levels to balance verbosity and operational clarity. IBM's official documentation clearly notes: "The default Instana Agent log level is set to INFO, providing important system messages without excessive output volume." Info-level logging captures initialization events, registration details, sensor activations, and important state changes during runtime. Higher verbosity levels, such as DEBUG or TRACE, are reserved for troubleshooting or engineering analysis and generally disabled by default to prevent log overgrowth or performance penalties. WARN and ERROR levels handle exception events but do not constitute day-to-day operational detail. Administrators may raise or lower the logging level dynamically through environment variables or agent configuration files if deeper insights are needed for debugging sensor or connectivity problems. Keeping INFO as the baseline gives operators coherent visibility of normal proceedings while maintaining efficiency and simplicity in operational monitoring.
NEW QUESTION # 55
What happens when multiple agent configuration files are created and put alongside the main configuration.yaml?
Answer: B
Explanation:
IBM Instana Observability's agent supports modularized configuration through multiple YAML configuration fragments within its configuration directory. As described in the documentation: "When multiple configuration files exist alongside the main configuration.yaml, the agent reads each in alphabetical order and applies configurations sequentially." This mechanism supports composable and layered configuration management, allowing base settings in configuration.yaml to be overridden or extended by secondary fragments. The key design principle is deterministic merge order-guaranteeing predictable configuration hierarchies across deployments. This method improves maintainability in large environments by facilitating separation of sensitive and technology-specific settings while maintaining a consistent merge process. IBM warns not to name multiple files with overlapping keys unless intentional overrides are desired. The merge is additive and case-sensitive, processed lexicographically, providing administrators both flexibility and traceability for troubleshooting and auditing. There is no error generated when multiple files are present; rather, Instana agent gracefully integrates them during initialization, a behavior that promotes advanced configuration modularity for complex deployments.
NEW QUESTION # 56
Which language is primarily used for writing Synthetic monitoring API scripts in Instana?
Answer: C
Explanation:
Instana's Synthetic Monitoring module allows administrators to script user journeys and API checks to validate service performance and uptime. According to official IBM documentation, "Synthetic monitoring API scripts use JavaScript as the scripting language for configuring user flows and custom API tests." Instana has designed its synthetic user interface to interpret JavaScript natively which provides powerful, flexible constructs for simulating user interactions, custom API payloads, test logic, and error handling. This ensures broad compatibility with real browser environments and highly customizable synthetic scenarios. Java, Python, and Go are not supported for browser-based or synthetic API scripting in Instana's synthetic monitors. JavaScript is chosen for its ubiquity and ease of integration with DOM-like and API interaction patterns, supporting the most common web-based automation needs as described in the documentation.
NEW QUESTION # 57
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