Exam 200-301 topic 1 question 1029 discussion

API = Application Programmable Interface. Yes, it uses the Northbound interface but it is an API that is traveling over the Northbound.

The correct answer is B. application programming interface (API). An application programming interface (API) is a set of rules and protocols that allows different software applications to communicate and interact with each other. In the context of sending data over an IP network from a client to a server, an API provides the necessary methods and functions for the client application to establish a connection, format and send the data packets, and communicate with the server. While northbound and southbound interfaces are also valid terms used in networking, they typically refer to the interfaces used in network management and communication between different layers of a network architecture. The Representational State Transfer (REST) API is a specific type of API that uses HTTP protocols and follows the principles of RESTful architecture for creating web services, but it is not the only type of API that enables data transfer over an IP network.

B. application programming interface

correct answer B: API ex. API allows an application running on a client (a web application) to interact with a server by sending and receiving data over an IP network. Northbound APIs: (e.g Ansible,Puppet,object, OpenStack, OpenDaylight, vSphere......) - allow an application that manage controller to define network behavior. == not for sending data between a client and a server. southbound APIs (e.g.OpenFlow, NETCONF, and REST APIs). - allow the controller to manage network devices (e.g., switches and routers) behavior and configure the actual data plane. == not for sending data between a client and a server.

Why the other options are incorrect: A. Northbound interface: A northbound interface refers to the communication between a network controller and the applications or services above it in a software-defined network (SDN). It is not typically responsible for sending data from a client to a server. C. Southbound interface: A southbound interface refers to communication between the SDN controller and network devices or elements below it (e.g., switches, routers). It is not related to client-server communication in the traditional sense. D. Representational State Transfer (REST) application programming interface: While REST is a type of API that enables communication between client and server applications, it is just one specific example of an API. The general term API is more accurate as it encompasses all types of interfaces used for application communication.

An API enables an application running on a client to communicate and send data over an IP network to a server. Specifically, it provides a set of protocols and tools for building software and allows the client application to interact with the server application, exchanging data and performing actions over the network. Explanation of other options: A. Northbound Interface: Typically used to communicate between the control layer and the application layer in network architecture, enabling applications to request network services. C. Southbound Interface: Used between the control layer and the infrastructure layer, often in SDN (Software-Defined Networking), to manage network devices. D. Representational State Transfer (REST) API: A specific type of API that uses HTTP requests, but "API" (option B) is the broader, more accurate answer as it covers all types of application communication, not limited to REST.

guys my first answer was D , then i asked the GPT to see what it answers and is still D, my main reason is because Clinet-Server interfaces types are RESTfull API's that describe the best answer in this scenario. Didn't we learn in CCNA ENSA that RESTfull API's are about 90% of all API's used online. REST APIs are APIS that work on top of HTTP , they define a set of functions witch developers can use to make requests and get reply with the HTTP method like Get or Post.

Application programming interface (API): This term refers to a set of rules and protocols that allows one software application to communicate with another. In the context of client-server communication over IP, an API would define how applications on the client side can send data to a server over an IP network. Therefore, this is the correct answer. So, the correct answer is B. application programming interface.

I think A is the desired answer. They are asking about the Interface "type".

B is correct

Asked this on Copilot - in ccna sdn Which interface type enables an application running on a client to send data over an IP network to a server? Response In the context of Software-Defined Networking (SDN), the interface type that enables an application running on a client to send data over an IP network to a server is the northbound interface (NBI)1. The NBI allows communication between the SDN controller and external applications, including those running on clients. Through the NBI, applications can configure the SDN controller and retrieve information from it. It acts as a bridge, allowing administrators to interact with the SDN environment and manage network resources effectively.

The interface type that enables an application running on a client to send data over an IP network to a server is typically referred to as a northbound interface. The northbound interface is responsible for communication between the application layer and the network layer, allowing applications to interact with the underlying network infrastructure. So, the correct answer is: A. northbound interface

A northbound interface is a type of interface that allows an application running on a client to send data over an IP network to a server. It is also known as a client-server interface. The application programming interface (API), is a type of interface that allows two or more software components to communicate with each other. It is not specific to client-server communication.

API, answer is B

Not "SDN" or "Controller" in question... so API

correct!

A - Northbound interface