C1000-189 sample questions

Question 1

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?

Accepted Answer

Cassandra

Answer

ClickHouse

Answer

Elasticsearch

Answer

ZooKeeper

Question 2

A consultant is designing an Instana solution for a client using AWS Lambda functions written in Node.js. The client requires deep visibility into the function execution, including database calls made by the Lambda, but wants to minimize the impact on cold start times.

What is the recommended method to instrument these Lambda functions?

Accepted Answer

Use the Instana Lambda Layer for Node.js and set the `INSTANA_ENDPOINT_URL` and `INSTANA_AGENT_KEY` environment variables.

Answer

Manually import the `@instana/collector` package in the function code and initialize it within the handler function.

Answer

Deploy a dedicated Instana Backend within the AWS VPC and configure VPC Peering for the Lambda functions.

Answer

Install the Instana Host agent on an EC2 instance in the same VPC and configure the AWS Lambda to send logs to CloudWatch for ingestion.

Question 3

Which of the following scenarios would explicitly require the use of the Instana **Static** Agent rather than the Dynamic Agent? (Select TWO)

Accepted Answer

The environment has strict change control policies that forbid external downloads or updates without prior approval.

Accepted Answer

The deployment is in an air-gapped network with no outbound internet access to Instana repositories.

Answer

The goal is to minimize the disk space footprint of the agent installation.

Answer

The monitored application is running on a serverless platform like AWS Fargate.

Question 4

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?

Accepted Answer

Port 1444 (HTTP/2)

Answer

Port 8080 (HTTP)

Answer

Port 8600 (HTTP)

Answer

Port 443 (HTTPS)

Question 5

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?

Accepted Answer

helm install instana-agent --repo https://agents.instana.io/helm --set agent.key=MY_KEY --set agent.endpointHost=ingress-red-saas.instana.io --set zone.name=production-us-east instana-agent

Answer

helm upgrade --install instana-agent --set agent.token=MY_KEY --set agent.server=ingress-red-saas.instana.io --set agent.zone=production-us-east

Answer

kubectl apply -f instana-agent.yaml --set key=MY_KEY --set endpoint=ingress-red-saas.instana.io --set zone=production-us-east

Answer

helm install instana-agent --repo https://agents.instana.io/helm --set instana.key=MY_KEY --set instana.host=ingress-red-saas.instana.io --set cluster.zone=production-us-east instana-agent

Question 6

A DevOps engineer is using the `stanctl` command-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?

Accepted Answer

stanctl inspect

Answer

stanctl up --dry-run

Answer

stanctl verify-requirements

Answer

stanctl check

Question 7

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?

Accepted Answer

The PoP initiates an outbound long-polling or WebSocket connection to the Instana Backend to poll for work and push results.

Answer

The PoP uses a sidecar proxy to synchronize a local Redis cache with the Instana Backend's database.

Answer

The PoP writes results to a shared Kafka topic that the Instana Backend consumes.

Answer

The PoP exposes a local REST API that the Instana Backend polls periodically to push tests and pull results.

Question 8

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?

Accepted Answer

Cassandra and ClickHouse

Answer

Elasticsearch and Kafka only

Answer

The `settings.hcl` file only

Answer

Only ZooKeeper

Free C1000-189 sample questions

Which of the following scenarios would explicitly require the use of the Instana Static Agent rather than the Dynamic Agent? (Select TWO)

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?

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?

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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