Cisco DevNet Certifications - DevNet Specialist
1 Introduction to Cisco DevNet
2 Cisco DevNet Certifications Overview
1 DevNet Associate
2 DevNet Professional
3 DevNet Specialist
3 DevNet Specialist Certification Path
1 Core Competencies
2 Specialization Tracks
4 DevNet Specialist - Enterprise Automation and Programmability
1 Introduction to Enterprise Automation
2 Network Programmability Concepts
3 Cisco DNA Center APIs
4 Cisco IOS XE Programmability
5 Cisco ACI Programmability
6 Cisco SD-WAN Programmability
7 Cisco UCS Programmability
8 Automation Tools and Frameworks
9 Python for Network Engineers
10 RESTful APIs and HTTP Methods
11 JSON and XML Data Formats
12 YANG Data Modeling
13 NETCONF and RESTCONF
14 Ansible for Network Automation
15 Puppet for Network Automation
16 Git and Version Control
17 CICD Pipelines for Network Automation
18 Troubleshooting Automation Issues
5 DevNet Specialist - Network Programmability and Automation
1 Introduction to Network Programmability
2 Network Automation Concepts
3 Cisco NX-API and NX-OS Programmability
4 Cisco IOS XR Programmability
5 Cisco Meraki Programmability
6 Cisco Catalyst 9000 Series Programmability
7 Cisco SD-Access Programmability
8 Network Automation Tools and Frameworks
9 Python for Network Engineers
10 RESTful APIs and HTTP Methods
11 JSON and XML Data Formats
12 YANG Data Modeling
13 NETCONF and RESTCONF
14 Ansible for Network Automation
15 Puppet for Network Automation
16 Git and Version Control
17 CICD Pipelines for Network Automation
18 Troubleshooting Automation Issues
6 DevNet Specialist - Software Development and Design
1 Introduction to Software Development
2 Software Design Principles
3 Object-Oriented Programming (OOP)
4 Python Programming Language
5 RESTful API Design
6 Microservices Architecture
7 Containerization with Docker
8 Orchestration with Kubernetes
9 CICD Pipelines for Software Development
10 Test-Driven Development (TDD)
11 Version Control with Git
12 Agile Development Methodologies
13 DevOps Practices
14 Troubleshooting Software Development Issues
7 DevNet Specialist - Cloud Automation and Programmability
1 Introduction to Cloud Automation
2 Cloud Programmability Concepts
3 Cisco CloudCenter Suite
4 Cisco Intersight Programmability
5 Cisco Hybrid Cloud Manager
6 Cisco Application Policy Infrastructure Controller (APIC)
7 Cisco Container Platform
8 Cloud Automation Tools and Frameworks
9 Python for Cloud Engineers
10 RESTful APIs and HTTP Methods
11 JSON and XML Data Formats
12 YANG Data Modeling
13 NETCONF and RESTCONF
14 Ansible for Cloud Automation
15 Puppet for Cloud Automation
16 Git and Version Control
17 CICD Pipelines for Cloud Automation
18 Troubleshooting Cloud Automation Issues
8 DevNet Specialist - Collaboration Programmability
1 Introduction to Collaboration Programmability
2 Cisco Webex Programmability
3 Cisco Unified Communications Manager (CUCM) Programmability
4 Cisco Contact Center Enterprise (CCE) Programmability
5 Collaboration Programmability Tools and Frameworks
6 Python for Collaboration Engineers
7 RESTful APIs and HTTP Methods
8 JSON and XML Data Formats
9 YANG Data Modeling
10 NETCONF and RESTCONF
11 Ansible for Collaboration Automation
12 Puppet for Collaboration Automation
13 Git and Version Control
14 CICD Pipelines for Collaboration Automation
15 Troubleshooting Collaboration Programmability Issues
9 DevNet Specialist - Security Programmability
1 Introduction to Security Programmability
2 Cisco Firepower Management Center (FMC) Programmability
3 Cisco Identity Services Engine (ISE) Programmability
4 Cisco Stealthwatch Programmability
5 Cisco Secure Network Analytics (SNA) Programmability
6 Security Programmability Tools and Frameworks
7 Python for Security Engineers
8 RESTful APIs and HTTP Methods
9 JSON and XML Data Formats
10 YANG Data Modeling
11 NETCONF and RESTCONF
12 Ansible for Security Automation
13 Puppet for Security Automation
14 Git and Version Control
15 CICD Pipelines for Security Automation
16 Troubleshooting Security Programmability Issues
10 DevNet Specialist - Data Center Programmability
1 Introduction to Data Center Programmability
2 Cisco Application Centric Infrastructure (ACI) Programmability
3 Cisco Nexus Programmability
4 Cisco UCS Programmability
5 Data Center Programmability Tools and Frameworks
6 Python for Data Center Engineers
7 RESTful APIs and HTTP Methods
8 JSON and XML Data Formats
9 YANG Data Modeling
10 NETCONF and RESTCONF
11 Ansible for Data Center Automation
12 Puppet for Data Center Automation
13 Git and Version Control
14 CICD Pipelines for Data Center Automation
15 Troubleshooting Data Center Programmability Issues
11 DevNet Specialist - IoT Programmability
1 Introduction to IoT Programmability
2 Cisco IoT Field Network Director (FND) Programmability
3 Cisco Kinetic for Cities Programmability
4 Cisco IoT Operations Dashboard Programmability
5 IoT Programmability Tools and Frameworks
6 Python for IoT Engineers
7 RESTful APIs and HTTP Methods
8 JSON and XML Data Formats
9 YANG Data Modeling
10 NETCONF and RESTCONF
11 Ansible for IoT Automation
12 Puppet for IoT Automation
13 Git and Version Control
14 CICD Pipelines for IoT Automation
15 Troubleshooting IoT Programmability Issues
12 DevNet Specialist - Service Provider Programmability
1 Introduction to Service Provider Programmability
2 Cisco Network Services Orchestrator (NSO) Programmability
3 Cisco IOS XR Programmability
4 Cisco ASR 9000 Series Programmability
5 Service Provider Programmability Tools and Frameworks
6 Python for Service Provider Engineers
7 RESTful APIs and HTTP Methods
8 JSON and XML Data Formats
9 YANG Data Modeling
10 NETCONF and RESTCONF
11 Ansible for Service Provider Automation
12 Puppet for Service Provider Automation
13 Git and Version Control
14 CICD Pipelines for Service Provider Automation
15 Troubleshooting Service Provider Programmability Issues
13 DevNet Specialist - Wireless Programmability
1 Introduction to Wireless Programmability
2 Cisco Wireless LAN Controller (WLC) Programmability
3 Cisco DNA Center Wireless Programmability
4 Cisco Mobility Services Engine (MSE) Programmability
5 Wireless Programmability Tools and Frameworks
6 Python for Wireless Engineers
7 RESTful APIs and HTTP Methods
8 JSON and XML Data Formats
9 YANG Data Modeling
10 NETCONF and RESTCONF
11 Ansible for Wireless Automation
12 Puppet for Wireless Automation
13 Git and Version Control
14 CICD Pipelines for Wireless Automation
15 Troubleshooting Wireless Programmability Issues
14 DevNet Specialist - DevOps and Automation
1 Introduction to DevOps and Automation
2 Continuous Integration (CI)
3 Continuous Deployment (CD)
4 Infrastructure as Code (IaC)
5 Configuration Management Tools
6 Monitoring and Logging
7 Containerization and Orchestration
8 CICD Pipelines
9 Version Control with Git
10 Agile Development Methodologies
11 DevOps Practices
12 Troubleshooting DevOps Issues
15 DevNet Specialist - Automation and Programmability Best Practices
1 Best Practices for Network Automation
2 Best Practices for Software Development
3 Best Practices for Cloud Automation
4 Best Practices for Security Programmability
5 Best Practices for Data Center Programmability
6 Best Practices for IoT Programmability
7 Best Practices for Service Provider Programmability
8 Best Practices for Wireless Programmability
9 Best Practices for Collaboration Programmability
10 Best Practices for DevOps and Automation
16 DevNet Specialist - Certification Exam Preparation
1 Exam Objectives and Domains
2 Study Resources and Materials
3 Practice Exams and Simulations
4 Exam Registration and Scheduling
5 Test-Taking Strategies
6 Post-Exam Actions and Certification Maintenance
RESTful API Design Explained

RESTful API Design Explained

1. Resource Naming

Resource naming is a fundamental aspect of RESTful API design. It involves choosing appropriate URIs (Uniform Resource Identifiers) to represent resources. Good resource naming follows a hierarchical structure and uses nouns to represent resources, making the API intuitive and easy to understand.

Example: Consider an API for managing network devices. A well-named resource might be "/devices/12345/interfaces", where "devices" is the collection of all devices, "12345" is the specific device ID, and "interfaces" represents the interfaces of that device.

2. HTTP Methods

HTTP methods define the actions that can be performed on resources. The most common methods are GET (retrieve a resource), POST (create a new resource), PUT (update a resource), and DELETE (remove a resource). Using these methods correctly ensures that the API is consistent and follows RESTful principles.

Example: To manage a network device, you might use GET /devices/12345 to retrieve the device details, POST /devices to create a new device, PUT /devices/12345 to update the device, and DELETE /devices/12345 to remove the device.

3. Status Codes

HTTP status codes provide feedback on the outcome of an HTTP request. They are grouped into categories such as 2xx (successful), 4xx (client errors), and 5xx (server errors). Using the correct status codes helps clients understand the result of their requests and handle errors appropriately.

Example: If a client tries to retrieve a non-existent device, the API should return a 404 Not Found status code. If the request is successful, a 200 OK status code should be returned along with the device details.

4. Versioning

API versioning allows for the evolution of the API without breaking existing clients. It ensures that changes to the API are backward-compatible and can be gradually rolled out. Versioning can be done through URI paths, query parameters, or custom headers.

Example: An API might have different versions like "/v1/devices" and "/v2/devices". Clients can choose which version to use, allowing for smooth transitions when new features or changes are introduced.

5. Pagination

Pagination is used to manage large datasets by breaking them into smaller, more manageable chunks. It improves performance and usability by allowing clients to retrieve data in a controlled manner. Pagination can be implemented using query parameters like "limit" and "offset" or "page" and "size".

Example: When retrieving a list of network devices, the API might use pagination to return 10 devices at a time. The client can use query parameters like "?limit=10&offset=20" to retrieve the next set of devices.