Pearson 300-435 New Attempt

REST API calls are characterized as being stateless and implemented over HTTP. Being stateless means that each request from client to server must contain all of the information needed to understand and complete the request; there is no session state stored on the server. Implemented over HTTP indicates that REST APIs use standard web protocols for communication. References: Automating Cisco Enterprise Solutions Official Cert Guide

To access the hostname from the JSON data assigned to the variable “d”, one must navigate through the nested dictionaries and lists. The correct syntax in Python for accessing a dictionary is using square brackets with the key as a string. Therefore, ‘d[“data”]’ accesses the value associated with the key “data”, which is a list. ‘[0]’ accesses the first item in that list, which is another dictionary. Finally, ‘[“host-name”]’ retrieves the value associated with “host-name” from that dictionary. References: ( Automating Cisco Enterprise Solutions Official Cert Guide )

 The statement ‘D’ is used to assign the list of interfaces from the JSON response to the variable ‘interfaces’. This allows the script to iterate over each interface and print the IP addresses of all loopback interfaces.

 Native YANG models are specific to a vendor’s platform, incorporating proprietary features, whereas OpenConfig models are vendor-neutral and created for interoperable use across different platforms.