C1000-189 IBM Instana Observability v1.0.277 Administrator - Professional Practice Questions
Prepare for C1000-189 with more than an answer.
- Exam fee
- $200 USD
- Time limit
- 90 minutes
- Questions on the exam
- 61
- Level
- Professional
- Valid for
- Not specified by IBM - check IBM certification policies
Domains covered on the exam 7
- Planning13%
- Installation17%
- Configuration18%
- Security and Compliance8%
- Integration13%
- Operations21%
- Troubleshooting10%
- 1
You are installing an Instana backend on a Kubernetes cluster. You have already installed the Instana Operator. You now need to apply the Core custom resource to initialize the backend.
Which of the following fields in the Core spec is MANDATORY for a successful installation?
Show answer details
Correct answer: D
The
baseDomainfield is required as it defines the DNS domain under which the Instana backend services (unit, ingress, etc.) will be exposed. Without it, the Operator cannot configure the necessary Ingress resources. - 2
You have a fleet of Instana agents deployed via DaemonSet on Kubernetes. You need to enable the 'Java' sensor but disable the 'Go' sensor globally across the cluster using the
configuration.yamlin the ConfigMap.Which configuration snippet achieves this?
Show answer details
Correct answer: B
Instana agent configuration uses the
com.instana.plugin.namespace. Settingenabled: trueorenabled: falsecontrols the activation of that specific sensor. - 3
A developer needs to configure a custom service naming rule for a Java application running in Kubernetes. They want the service to be named based on the value of a specific environment variable
APP_SERVICE_NAME.Which configuration in the agent's
configuration.yamlcorrectly sets up this rule?Show answer details
Correct answer: B
While Instana supports many configurations via
configuration.yaml, overriding the service name for a specific process is most directly and correctly handled by setting theINSTANA_SERVICE_NAMEenvironment variable on the monitored process itself. This overrides other discovery mechanisms. - 4
You are configuring Instana to ingest traces from an OpenTelemetry Collector. You want to ensure that the trace data correlates correctly with the infrastructure metrics Instana is already collecting from the host agent.
What is the CRITICAL configuration required on the OpenTelemetry side to enable this infrastructure correlation?
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Correct answer: A
To achieve seamless infrastructure correlation, the best practice is to send OTel data to the local Instana Host Agent. The agent enriches the OTel spans with infrastructure tags (Host ID, Zone, etc.) before forwarding them to the backend, ensuring the traces appear linked to the correct host in the Infrastructure Map.
- 5
Your organization uses Smart Alerts for detecting anomalies in application latency. You notice that a specific alert is triggering too frequently during normal daily traffic spikes, causing alert fatigue.
Which configuration adjustment in the Smart Alert blueprint is MOST appropriate to reduce these false positives without missing genuine issues?
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Correct answer: C
Smart Alerts using adaptive/statistical baselines have a sensitivity setting. Lowering the sensitivity makes the algorithm more tolerant of deviations, requiring a more significant or sustained deviation from the baseline to trigger an alert, thus reducing noise from normal variances.
- 6
An enterprise architect is designing an Instana deployment for a highly regulated financial institution. The environment requires a self-hosted Instana backend on a Kubernetes cluster that is completely air-gapped from the public internet. The architect needs to ensure that the image registry configuration supports this constraint while maintaining the ability to update the backend components efficiently using the Instana Operator.
Which sequence of actions correctly prepares the environment for this air-gapped installation?
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Correct answer: B
In an air-gapped environment, the Instana backend images must be mirrored from the public Instana registry to a local private registry accessible by the Kubernetes cluster. The
kubectl-instanaplugin facilitates this mirroring. Once mirrored, the installation configuration (Core Custom Resource) must be updated to reference this local registry and include the necessaryimagePullSecretsfor authentication. - 7
A large retail organization is planning to monitor a hybrid environment consisting of on-premise physical servers running legacy Java applications and a new fleet of microservices on AWS EKS. They want to minimize the resource overhead on the legacy servers while ensuring full distributed tracing for the microservices.
Which agent deployment strategy aligns BEST with these requirements?
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Correct answer: C
Infrastructure mode reduces overhead by disabling AutoTrace and language sensors, which is ideal for legacy servers where deep APM might be too resource-intensive or unnecessary if only host health is needed. The EKS cluster requires APM mode to provide the required distributed tracing for microservices.
- 8
You are sizing the storage requirements for a Self-Hosted Instana backend (Standard Edition) on Docker. The environment has a sustained ingestion rate of 500 calls per second and 100 infrastructure metrics per second. You need to ensure data retention complies with a 30-day policy for trace data before it is rolled up or deleted.
Which component's storage requirement is MOST critical to calculate accurately for this specific trace retention goal?
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Correct answer: B
In the Instana Standard Edition architecture, Cassandra is the primary data store for trace data (spans). Therefore, the disk space sizing for Cassandra is directly correlated with the volume of traces (calls per second) and the desired retention period (30 days).
