Exam 200-301 topic 1 question 1009 discussion

NETCONF is a Southbound API used to configure network devices. https://ipcisco.com/lesson/netconf-overview/#:~:text=NETCONF%20Protocol%20is%20used%20in,Plane%20and%20the%20Control%20Plane.

Yeah, API and SOAP are correct answers.

REST (Representational State Transfer): REST is a popular and lightweight API used in SDN for communication between the SDN controller and the applications above the controller (northbound). It uses HTTP/HTTPS protocols and is commonly used for its simplicity, scalability, and ease of integration with web-based applications. NETCONF (Network Configuration Protocol): NETCONF is a network management protocol that is widely used in SDN to interact with network devices. It enables configuration, monitoring, and management of network devices and is commonly used in SDN environments to communicate between the controller and the network devices. NETCONF works well with XML data and is also considered a northbound API.

SOUTHBOUND API > Openflow & Netconf NORTHBLUND API> REST, SOAP

A & C are correct

Best way to remember the answer is = After using SOAP, you will need a little REST....

AI's answer: The correct answers are: A. REST D. NETCONF REST and NETCONF are both examples of northbound APIs in a Software-Defined Network (SDN). They provide a means for the SDN controller to communicate with applications and services running over the network. Please note that: OpenFlow is not a northbound API, but rather a southbound protocol used in SDN environments for communication between the controller and the network devices. OpFlex is a southbound protocol developed by Cisco, used between the controller and network devices. SOAP could theoretically be used as a northbound API, but it’s less common in SDN environments compared to REST and NETCONF due to its complexity and overhead.

Cisco DNA Center supports several southbound APIs so that the controller can communicate with the devices it manages. You can think of these as two categories: ■ Protocols to support traditional networking devices/software versions: Telnet, SSH, SNMP ■ Protocols to support more recent networking devices/software versions: NETCONF, RESTCONF page 396

NETCONF can be used as an Soutbound AND Northbound API and SOAP is not an typically API for SDN

A. REST (Representational State Transfer): REST is a widely used architectural style for creating web services, making it a popular choice for Northbound APIs in software-defined networks. It uses standard HTTP methods (GET, POST, PUT, DELETE) to communicate and transfer data between applications. REST APIs are known for their simplicity, scalability, and flexibility. D. NETCONF (Network Configuration Protocol): NETCONF is a network management protocol used for configuring and managing network devices in a software-defined network. It provides a programmatic interface for accessing and modifying device configurations, allowing centralized control and management of network devices. NETCONF uses XML-based messages over secure transport protocols for communication.

A. REST (Representational State Transfer) D. NETCONF (Network Configuration Protocol) REST is a widely used architectural style for designing networked applications, and it is commonly used as a northbound API in SDN environments. It provides a simple and lightweight approach for application developers to interact with the SDN controller. NETCONF is a network management protocol that allows for the configuration and management of network devices. It is often used as a northbound API in SDN to provide a standardized interface for applications to configure and control network elements. OpenFlow, SOAP, and OpFlex are not typically categorized as northbound APIs. OpenFlow is a southbound API that allows communication between the SDN controller and network switches. SOAP (Simple Object Access Protocol) is a protocol for exchanging structured information in web services and is not specific to SDN. OpFlex is a southbound protocol used in Cisco's Application Centric Infrastructure (ACI) and is not a widely adopted northbound API in the general SDN ecosystem.

Simple Object Access Protocol (SOAP) is considered an alternate technology to REST for API access.

SOAP is northboud https://www.cisco.com/en/US/docs/net_mgmt/ciscoworks_common_services_software/3.2/north_bound_api/developers/guide/websrvc.html Regards

A. REST D. NETCONF In a software-defined network (SDN), northbound APIs are used for communication between the SDN controller and higher-level applications or management systems. Two common northbound APIs are: A. REST (Representational State Transfer) - a lightweight, web-based API that uses standard HTTP methods for communication. D. NETCONF (Network Configuration Protocol) - an XML-based protocol used for managing network devices, including configuration, monitoring, and administration.