Developing Applications Using Cisco Core Platforms and APIs (DEVCOR)

In this Developing Applications Using Cisco Core Platforms and APIs course focuses on designing, securing, deploying, and operating modern applications that integrate tightly with network and infrastructure automation. It emphasizes maintainability, serviceability, and security as core design principles, ensuring applications can evolve safely while remaining observable, resilient, and easy to operate. Students learn how to apply ChatOps, REST APIs, and automation workflows to streamline application development and operational processes across both application and network domains.

The curriculum explores advanced integration techniques, including secure REST API consumption, data modeling with YANG, and interaction with relational, document, time-series, and graph databases. Distributed systems concepts are introduced to help students understand scalability, state management, and service orchestration in complex environments. Application deployment and release automation are covered through CI/CD pipelines, containerization with Docker, and infrastructure-as-code tools such as Terraform, Ansible, and GitLab CI/CD, bridging the gap between application teams and network operations.

Hands-on labs reinforce these concepts by guiding students through real-world tasks such as constructing sequence diagrams, implementing REST error handling, identifying and remediating OWASP vulnerabilities, resolving source control conflicts, and diagnosing issues through application logs. Learners also gain practical experience automating Cisco IOS XE and Firepower infrastructure, using RESTCONF for network configuration, and querying multiple database types. By the end of the course, students are prepared to design and operate secure, automated, and scalable applications integrated with modern network and infrastructure platforms.

How You'll Benefit

This training will help you: 

• Take full advantage of the network and software development practices when implementing applications to fulfill business needs
• Design and implement automated workflows for network provisioning
• Design and develop applications built on Cisco platforms
• Design and implement integration of custom applications with Cisco platforms and devices
• Understand challenges in network programmability and system integration
• Gain knowledge for protocols, solutions, and designs to acquire professional-level and expert-level DevOps roles
• Earn 64 CE credits toward recertification

Upon completing this course, the student will be able to meet these objectives:

• Describe the architectural traits and patterns that improve application serviceability
• Identify steps to design and build a ChatOps application
• Implement robust Representational State Transfer (REST) API integrations with network error handling, pagination, and error flow control
• Describe the necessary steps for securing user and system data in applications
• Describe the necessary steps for securing applications
• Identify common tasks in automated application release process
• Describe best practices for application deployment
• Describe methodologies for designing distributed systems
• Describe the concepts of infrastructure configuration management and device automation
• Utilize Yet Another Next Generation (YANG) data models to describe network configurations and telemetry
• Compare various relational and nonrelational database types and how to select the appropriate type based on requirements

What to Expect in the Exam

350-901: Developing Applications Using Cisco Core Platforms and APIs is a 120-minute exam associated with the Cisco Certified DevNet Specialist – Core certification and satisfies the core exam requirement for the Cisco Certified DevNet Professional and Cisco Certified DevNet Expert certifications. 

The exam tests your knowledge of software development and design, including:  

• Using APIs
• Cisco platforms
• Application deployment and security
• Infrastructure and automation

The job roles best suited to the material in this course are:
• Senior Network Automation Engineer
• Senior Software Developer
• Senior System Integration Programmer
• Senior Infrastructure Architect
• Senior Network Designer
• Senior Test Development Engineer

The knowledge and skills you are expected to have before attending this training are: 

• Knowledge of program design and coding with focus on Python
• Familiarity with Ethernet, Transmission Control Protocol Internet Protocol (TCP/IP) and internet-related networking
• Understand the utilization of APIs
• Understanding of software development and design methodologies
• Hands-on experience with a programming language (specifically Python)

These skills can be found in the following Cisco Learning Offering:  

• Developing Applications and Automating Workflows using Cisco Platforms 1.0

Module 1: Designing for Maintainability

Module 2: Designing for Serviceability

Module 3: Implementing ChatOps Application

Module 4: Describing Advanced REST API Integration

Module 5: Securing Application Data

Module 6: Securing Web and Mobile Applications

Module 7: Automating Application-Release

Module 8: Deploying Applications

Module 9: Understanding Distributed Systems

Module 10: Orchestrating Network and Infrastructure

Module 11: Modeling Data with YANG

Module 12: Using Relational and Non-Relational Databases

LAB OUTLINE

• Construct Sequence Diagram
• Construct Web Sequence Diagram
• Use Cisco Webex Teams™ API to Enable ChatOps
• Integrate Cisco API to List Service Set Identifiers (SSIDs) and Retrieve Location Data
• Use Paginated REST API Endpoint
• Utilize REST API Error Control Flow Techniques
• Evaluate Application for Common Open Web Application Security Project (OWASP) Vulnerabilities
• Resolve Merge Conflicts with Git
• Diagnose Continuous Integration and Continuous Delivery (CI/CD) Pipeline Failures
• Containerize Application Using Docker
• Integrate Application into Existing CI/CD Environment
• Diagnose Problems Using Application Logs
• Configure Network Parameters Using Ansible and Puppet
• Synchronize Firepower Device Configuration
• Utilize RESTCONF for Network Configuration
• Query Relational Database
• Query Document Store
• Query Time Series Database
• Query Graph Database