Cisco Certified DevNet Associate Practice Exam: Test Your Knowledge 2025

A developer is writing a Python script to interact with a REST API. Which HTTP method should be used to retrieve data from the API without modifying any resources on the server?

Which data format uses key-value pairs and is commonly used in configuration files and API responses due to its human-readable structure with indentation to represent hierarchy?

What is the primary benefit of using version control systems like Git in software development?

A network engineer needs to configure a Cisco switch using RESTCONF. Which data encoding format is primarily used by RESTCONF for data exchange?

In a CI/CD pipeline, what is the primary purpose of the Continuous Integration phase?

A developer receives a 401 status code when making an API request. What does this status code indicate?

Which Python data structure would be most appropriate for storing a collection of unique device IP addresses where order does not matter and duplicate entries should be automatically prevented?

A DevNet engineer is designing an application that needs to retrieve network device configurations from Cisco DNA Center. Which API should be used?

An application deployment uses environment variables to store database connection strings. What is the primary security benefit of this approach?

Which Ansible component defines the list of hosts or groups of hosts upon which commands, modules, and tasks in a playbook operate?

What is the primary difference between Northbound and Southbound APIs in a Software-Defined Networking (SDN) architecture?

A developer needs to parse JSON data received from an API response in Python. Which code snippet correctly extracts the value of 'hostname' from the following JSON: {"device": {"hostname": "router01", "ip": "10.1.1.1"}}?

In a microservices architecture, what is the primary purpose of using containers?

Which tool would be most appropriate for infrastructure provisioning and managing the lifecycle of cloud resources like virtual machines, networks, and storage?

A network automation script needs to connect to multiple Cisco devices using SSH. Which Python library is specifically designed for multi-vendor network device connections and command execution?

What is the purpose of YANG models in network programmability?

An organization is implementing network segmentation. Which technology creates logical network segments within a physical network infrastructure by tagging frames with identifiers?

A developer is implementing error handling for an API integration. The application should retry failed requests for temporary network issues but immediately fail for authentication problems. Which HTTP status code should trigger an immediate failure without retry?

A DevOps team is implementing a webhook-based automation system where Cisco Meraki sends real-time alerts to a custom application. What must be implemented on the receiving application side to properly handle webhook POST requests?

An application running in a Kubernetes cluster needs to communicate with other services and must be able to scale horizontally. The application's pods are ephemeral and their IP addresses change frequently. Which Kubernetes resource should be used to provide a stable network endpoint for accessing these pods?

A network engineer is troubleshooting connectivity between two devices in different subnets. The devices can ping their respective default gateways but cannot communicate with each other. Assuming routing is configured correctly, which layer of the OSI model is most likely where the problem exists?

A development team is implementing infrastructure automation using a Git-based workflow. They want to ensure that any changes to infrastructure code are reviewed and tested before being applied to production. Which practice best supports this requirement?