C1000-189 Sample Questions & Answers
Day-to-day operations, including website, synthetic and application monitoring, get the most attention, alongside planning Instana's architecture, installing the backend and agents, business process and serverless configuration, compliance, and troubleshooting.
Launch the full C1000-189 simulator →Showing 8 of 17 free samples.
- Question 1IntermediateSelect 2
Planning · Distinguish Agent Modes
Which of the following scenarios would explicitly require the use of the Instana Static Agent rather than the Dynamic Agent? (Select TWO)
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Correct answers: B, D
The Static Agent is self-contained and does not update itself or download new sensors from Instana repositories. This is required for strict change control environments.
Dynamic agents attempt to fetch updates and sensors from the internet. In a completely air-gapped environment without a configured local mirror/repository, a Static Agent (which includes all necessary sensors in the package) is often preferred or required to simplify deployment.
- Question 2Beginner
Planning · Articulate Instana architecture for on-premise
While planning the network architecture for an on-premise Instana installation, you need to ensure that the agents can successfully report data to the backend. The backend is installed behind a load balancer.
Which port MUST be open on the load balancer to accept incoming agent data connections?
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Correct answer: C
Port 1444 is the primary port used by Instana agents to communicate with the Instana backend (Acceptor component) using HTTP/2.
- Question 3Advanced
Installation · Install Agents
You are installing the Instana Host Agent on a Kubernetes cluster using Helm. You need to configure the agent to report to a specific backend endpoint and use a specific agent key. Additionally, you must assign the cluster to a zone named 'production-us-east'.
Which Helm command snippet correctly applies these configurations?
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Correct answer: D
This command correctly sets the essential parameters:
agent.keyfor authentication,agent.endpointHostfor the backend connection, andzone.nameto logically group the agents in the Instana UI. - Question 4Intermediate
Installation · Install Instana backend
A DevOps engineer is using the
stanctlcommand-line tool to install a single-host self-hosted Instana backend on a Linux VM. The installation fails with an error indicating insufficient disk space for the data stores.Which command should the engineer run to verify the pre-flight checks and identify the specific requirement failure before attempting the installation again?
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Correct answer: C
The
stanctl inspectcommand is used to gather information about the environment and check for issues or requirements, often generating a support bundle or status report that highlights requirement failures. - Question 5Intermediate
Installation · Deploy Synthetic Monitoring PoPs
You are deploying an Instana Synthetic Monitoring Point of Presence (PoP) in a Kubernetes cluster to monitor internal applications. You have installed the PoP controller and agents.
What is the primary mechanism the PoP uses to receive test definitions and report results back to the Instana backend?
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Correct answer: C
Synthetic PoPs are designed to be deployed behind firewalls. They initiate the connection outbound to the Instana backend (SaaS or Self-Hosted) to fetch test configurations and upload results, avoiding the need for inbound firewall ports.
- Question 6Advanced
Installation · Migrate Instana
When migrating an Instana backend from a Docker-based installation to a Kubernetes-based installation using the Instana Operator, which component's data MUST be manually backed up and restored to ensure historical metric data is preserved?
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Correct answer: B
Cassandra stores trace data and configuration, while ClickHouse stores metric data (in newer architectures) or is used for analytics. Both datastores contain persistent state that must be migrated. If the migration involves moving from a system where metrics were in Cassandra/Elasticsearch to a ClickHouse-heavy architecture, or simply moving the volumes, ensuring these data stores are backed up and restored is critical for history preservation.
- Question 7Intermediate
Installation · Migrate Instana
You are preparing to upgrade a self-hosted Instana backend. The documentation states that the upgrade process involves schema changes to the ClickHouse database.
What is the safest approach to perform this upgrade to minimize the risk of data loss?
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Correct answer: A
Before any upgrade involving schema changes, a full cold backup (stopping services to ensure consistency) of the datastore is the standard best practice to prevent data corruption or loss if the migration fails.
- Question 8Intermediate
Installation · Install Agents
A customer wants to install the Instana agent on a Linux host but needs to ensure that the agent does NOT start automatically after installation. They want to configure it first and then start it manually via systemd.
Which environment variable should be set when running the one-liner installation script to achieve this?
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Correct answer: C
Setting
INSTANA_NO_START=true(or just defining it) tells the installation script to install the package files but skip the step of enabling and starting the service immediately.
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