Cisco Certified DevNet Professional Practice Exam 2025: Latest Questions

You are building a Python client for a REST API that uses OAuth 2.0. The API returns HTTP 401 after about an hour of successful calls. Your logs show the access token is unchanged across requests. What is the best practice to prevent these intermittent failures?

A team is designing an event-driven automation workflow where multiple microservices must react to network telemetry updates without tight coupling. Which design best meets this requirement?

You need to automate configuration changes on Cisco network devices using a model-driven approach that supports structured data and avoids screen scraping. Which interface is most appropriate?

A DevNet team is packaging a small internal API service into a container image and deploying it to a Kubernetes cluster. They want to keep runtime configuration (API keys, endpoints) out of the container image. What is the recommended Kubernetes approach?

A script calls a REST endpoint and receives HTTP 429 responses during peak hours. Which client-side behavior is the most appropriate to improve reliability and be a good API consumer?

A network automation pipeline renders device configurations from templates. A recent deployment caused unintended changes because engineers manually edited generated configs before pushing them. Which approach best enforces repeatability and reduces configuration drift?

You are designing an internal service that aggregates data from multiple Cisco platform APIs. The service must remain responsive even when one upstream API is slow or intermittently failing. Which pattern best addresses this requirement?

A containerized API running in Kubernetes must call an internal Cisco platform endpoint using mutual TLS (mTLS). Which solution best aligns with secure deployment practices?

A Python automation tool uses NETCONF to push configuration changes. Occasionally, a commit fails mid-change due to validation errors, leaving devices in inconsistent states. You need a strategy that provides transactional safety. What is the best approach?

You are designing a CI/CD pipeline for network automation that must meet security and compliance requirements: changes must be reviewed, tested, and traceable, and production credentials must not be exposed to developers. Which design best satisfies these constraints?

A developer is integrating with a REST API that enforces rate limits. They want their client to behave correctly when throttled. Which HTTP status code should the client specifically handle to implement backoff and retry logic?

You are designing a microservice that will be containerized and deployed to a Kubernetes cluster. The service needs a way to determine whether it is ready to receive traffic (for example, after loading a model into memory). Which Kubernetes probe best fits this requirement?

You are reviewing an OpenAPI definition used to generate client SDKs. Which OpenAPI element is primarily responsible for describing the structure of request/response bodies for reuse across operations?

A network automation script using NETCONF intermittently fails when applying configuration. The device returns an RPC error indicating the target datastore is locked. What is the best remediation in the client logic?

A team is building an event-driven integration where Cisco platform events must trigger a workflow in an internal system. They need loose coupling and the ability to reprocess events if the consumer is down. Which architecture best meets these requirements?

A Python tool calls multiple Cisco REST APIs. For troubleshooting and auditability, the team wants to correlate logs across services end-to-end. Which practice best enables distributed request tracing?

A CI/CD pipeline deploys an application that uses an API token to call a Cisco platform. Security requires the token not be stored in source control and to be rotated without rebuilding the container image. What is the best approach?

An automation workflow uses Ansible to configure network devices. The playbook reports 'changed' on every run even when the device is already in the desired state. What is the most likely root cause?

You are building a multi-tenant service that calls Cisco APIs on behalf of different customers. A security review flags that a single long-lived token is shared across tenants, increasing blast radius. Which design best reduces risk while maintaining least privilege?

A platform exposes a REST API that sometimes returns large datasets. Your client must minimize bandwidth and avoid timeouts while still retrieving all results. The API supports pagination and filtering. Which client strategy is the best practice?

A DevNet team is deploying the same microservice to multiple environments (dev/test/prod). They want the container images to be identical across environments and only vary environment-specific configuration such as API endpoints and feature flags. Which approach best follows cloud-native best practices?

A CI/CD pipeline must authenticate to a Cisco platform API without storing long-lived user passwords in the pipeline configuration. The platform supports OAuth 2.0. Which approach is the most secure and scalable for machine-to-machine automation?

A developer is consuming a REST API and receives an HTTP 429 response when calling an endpoint repeatedly. What is the best client-side behavior to reduce failures and be a good API consumer?

A company wants to automate network changes with Git-based workflows. They need strong controls so that proposed changes are reviewed, validated, and only then applied to production devices. Which design best meets these requirements?

You built an internal service that receives device event webhooks, processes them, and writes results to a database. During a network issue, webhook deliveries become duplicated and arrive out of order. The business requires that processing produces correct outcomes and avoids double-counting. Which architecture pattern best addresses this requirement?