Domain 6: Troubleshooting

IBM Certified Specialist - Instana · 37 questions

• A new Instana agent has been installed on a Linux host and the agent process is confirmed running via ps aux. After 20 minutes, no host metrics appear in the Instana UI. Which file should the administrator examine first to diagnose why the agent is not reporting?
• Service A (Java) calls Service B (Node.js) via HTTP. In Instana, separate independent traces appear for each service but are never linked into a single distributed trace. Host metrics for both services appear normally. What is the most likely cause of the broken trace correlation?
• An Instana agent DaemonSet is deployed to a Kubernetes cluster and all agent pods show status Running. However, no Kubernetes node, pod, or namespace metadata appears in the Instana UI. Agent pod logs show repeated entries: io.kubernetes.client.openapi.ApiException: 403 Forbidden. What is the most likely cause?
• An Instana agent is deployed on a host in a network DMZ. The agent process starts and logs show it is attempting connections to the configured Instana SaaS backend, but all attempts time out. The network team confirms that explicit outbound firewall rules are required. Which outbound port and protocol must be permitted for the agent to communicate with the Instana backend?
• A team configured an Instana alert for CPU utilization exceeding 80% on a group of application servers. The alert fires 3-4 times daily, but when engineers investigate, observed CPU usage is around 45-55%. Reviewing Instana metric graphs reveals brief CPU spikes to 85-90% lasting only 2-3 seconds. What is the most appropriate configuration change to eliminate these false positive alerts?
• After a configuration deployment, over 300 Instana alerts fire within 60 seconds, flooding on-call notification channels. The individual alerts are technically valid but are expected consequences of the deployment. What is the most appropriate Instana feature to prevent this situation during future planned deployments?
• A Java application server is running on a host monitored by the Instana agent. Host-level metrics such as CPU, memory, and disk I/O appear correctly in the Instana UI. However, JVM-specific metrics including heap usage, garbage collection activity, and thread counts are completely absent. The agent.log shows no Java sensor errors. What should the administrator investigate next?
• An Instana agent operated correctly until an organization-wide credential rotation was performed. Immediately after, the agent.log begins showing: ERROR backend - Authentication failed: 401 Unauthorized. The agent retries every 30 seconds but continues to fail. What is the most likely remediation step?
• After updating the Instana agent DaemonSet image tag to a newer version in a Kubernetes cluster, multiple agent pods enter CrashLoopBackOff status. The administrator needs to identify the root cause quickly. Which action will most directly reveal why the pods are crashing?
• Users report the on-premises Instana backend UI is extremely slow, with dashboards taking 45 seconds or more to render. All backend processes are running. The number of monitored entities grew from 500 to 5,000 over the past month. What should the administrator investigate first to address the performance degradation?
• An administrator notices that a MySQL database server appears twice in the Instana infrastructure map: once as an auto-discovered entity and once as a manually configured entity from configuration.yaml. This results in duplicate metrics and inflated entity counts against the Instana license. What is the correct resolution?
• A Spring Boot application running as a Kubernetes pod emits structured JSON logs to stdout. The development team expects these logs to appear in Instana log analytics, but no log entries from this service appear in the UI despite its traces and metrics being visible. What is the most likely reason the logs are not appearing?
• A team is preparing a production rollout and needs to avoid a design mistake. Which approach best demonstrates log levels in a IBM Certified Instana Observability Administrator environment?
• During a design review, an architect asks which choice best matches the IBM guidance. What is the best way to handle log collection while staying aligned with the certification objectives?
• An administrator is troubleshooting a pilot deployment and wants the most appropriate next step. Which approach best demonstrates agent connectivity in a IBM Certified Instana Observability Administrator environment?
• A project lead is turning a proof of concept into a governed production workflow. The team is focused on backend installation troubleshooting. Which recommendation is most appropriate?
• During a design review, an architect asks which choice best matches the IBM guidance. What is the best way to handle backend installation troubleshooting while staying aligned with the certification objectives?
• An administrator is troubleshooting a pilot deployment and wants the most appropriate next step. Which approach best demonstrates log levels in a IBM Certified Instana Observability Administrator environment?
• A project lead is turning a proof of concept into a governed production workflow. What is the best way to handle log collection while staying aligned with the certification objectives?
• A consultant is advising a customer that wants a scalable implementation. Which approach best demonstrates agent connectivity in a IBM Certified Instana Observability Administrator environment?
• A senior engineer reviews the current plan and notices that one key control is missing. The team is focused on backend installation troubleshooting. Which recommendation is most appropriate?
• A team is preparing a production rollout and needs to avoid a design mistake. For IBM Certified Instana Observability Administrator, the topic is log levels. What should the team do?
• During a design review, an architect asks which choice best matches the IBM guidance. The team is focused on log collection. Which recommendation is most appropriate?
• A team is preparing a production rollout and needs to avoid a design mistake. Which approach best demonstrates agent connectivity in a IBM Certified Instana Observability Administrator environment?
• During a design review, an architect asks which choice best matches the IBM guidance. The team is focused on backend installation troubleshooting. Which recommendation is most appropriate?
• An administrator is troubleshooting a pilot deployment and wants the most appropriate next step. For IBM Certified Instana Observability Administrator, the topic is log levels. What should the team do?
• A project lead is turning a proof of concept into a governed production workflow. The team is focused on log collection. Which recommendation is most appropriate?
• A consultant is advising a customer that wants a scalable implementation. For IBM Certified Instana Observability Administrator, the topic is agent connectivity. What should the team do?
• A senior engineer reviews the current plan and notices that one key control is missing. Which approach best demonstrates backend installation troubleshooting in a IBM Certified Instana Observability Administrator environment?
• A team is preparing a production rollout and needs to avoid a design mistake. What is the best way to handle log levels while staying aligned with the certification objectives?
• A consultant is advising a customer that wants a scalable implementation. For IBM Certified Instana Observability Administrator, the topic is log levels. What should the team do?
• A senior engineer reviews the current plan and notices that one key control is missing. The team is focused on log collection. Which recommendation is most appropriate?
• A team is preparing a production rollout and needs to avoid a design mistake. For IBM Certified Instana Observability Administrator, the topic is agent connectivity. What should the team do?
• During a design review, an architect asks which choice best matches the IBM guidance. Which approach best demonstrates backend installation troubleshooting in a IBM Certified Instana Observability Administrator environment?
• An administrator is troubleshooting a pilot deployment and wants the most appropriate next step. What is the best way to handle log levels while staying aligned with the certification objectives?
• A project lead is turning a proof of concept into a governed production workflow. Which approach best demonstrates log collection in a IBM Certified Instana Observability Administrator environment?
• A consultant is advising a customer that wants a scalable implementation. What is the best way to handle agent connectivity while staying aligned with the certification objectives?