C1000-189 sample questions

Question 1

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?

Accepted Answer

Mirror the required images from `containers.instana.io` to a local private container registry using the `kubectl-instana` plugin, configure the `imagePullSecrets` for the private registry, and update the Core custom resource to point to the local registry.

Answer

Configure the cluster to allow whitelisted outbound traffic to `containers.instana.io`, install the Operator, and set the `image.registry` value to the public Instana registry.

Answer

Mirror the Instana images to a local bastion host, run the `stanctl export` command, transfer the tarball to the air-gapped network, and use `stanctl import` to load images directly into the Kubernetes nodes.

Answer

Download the Instana Agent Helm chart, modify the `values.yaml` to disable online checks, and deploy the backend using the `--offline` flag in the Helm install command.

Question 2

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?

Accepted Answer

Deploy the Host Agent in INFRASTRUCTURE mode on the legacy servers and in APM mode (via DaemonSet) on the AWS EKS cluster.

Answer

Deploy the Host Agent in APM mode on all servers and configure `com.instana.plugin.java` to exclude specific packages on the legacy servers.

Answer

Use the AWS Agent for the EKS cluster and install the Static Agent on the legacy servers to prevent auto-updates.

Answer

Deploy the Host Agent in APM mode everywhere but disable the 'Trace' capability in the backend configuration for the legacy zone.

Question 3

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 4

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

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.

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.

Question 5

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 6

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 443 (HTTPS)

Answer

Port 8600 (HTTP)

Question 7

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 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

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

Question 8

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 check

Answer

stanctl verify-requirements

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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?

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