Exam 350-401 topic 1 question 576 discussion

RESTCONF NETCONF GET <get>, <get-config> POST <edit-config> (operation=”create”) PUT <edit-config> (operation=”create/replace”) Selected Answer D PATCH <edit-config> (operation=”merge”) DELETE <edit-config> (operation=”delete”)

RESTCONF does not have CREATE method.

Going with A. The question says replace = PUT.

D is correct

The PUT method is used to create or replace the entire resource identified by the Request-URI (Uniform Resource Identifier). If the resource does not exist, it is created. If the resource already exists, it is replaced with the new representation specified in the request payload. Therefore, when migrating from NETCONF scripts that use <edit-config> (operation="create") to RESTCONF, the corresponding operation to use is PUT.

While POST can be used for creating resources, the more direct equivalent to <edit-config> with operation="create" in NETCONF is the PUT method. PUT is used when you want to update or create a resource at a specific URI. In summary, for the scenario described in the question, where <edit-config> with operation="create" is used in NETCONF scripts, the appropriate RESTCONF operation is PUT (option A).

so from https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/171/b_171_programmability_cg/restconf_protocol.html#id_125840 it is either PUT (create or replace) or POST (create or operation like reload) however looking at the question key wording is that scripts contain the "operation" so from the link answer =>POST

imo, I'm going with PUT...the keyword in the question says "replace" PUT: (Create or Replace) Request: If the specified command is not present on the device, the POST request creates it ; however, if it is already present in the running configuration, the command will be replaced by this request https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/171/b_171_programmability_cg/restconf_protocol.html#id_125840

It could be A or D. A if they mean use RESTCONF to replace the text in the NETCONF script (therefore a PUT as that is the replace operator, you are replacing some text with something else) D if they mean reword the NETCONF script by some means to do the same thing as it did before, which was a 'create' (and therefore a POST)

I think it's A. Here from Cisco: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/171/b_171_programmability_cg/restconf_protocol.html#id_125840 "PUT: (Create or Replace) Request: If the specified command is not present on the device, the POST request creates it ; however, if it is already present in the running configuration, the command will be replaced by this request."

Why would A not work? PUT <edit-config> (operation=”create/replace”)

POST <edit-config> (operation=”create”)

Has to be POST D https://www.cisco.com/c/en/us/td/docs/dcn/nx-os/nexus9000/101x/programmability/cisco-nexus-9000-series-nx-os-programmability-guide-release-101x/m-n9k-agent-restconf-101x.pdf

why no A ? PUT: This method creates or replaces the target resource.

POST: This method creates a data resource or invokes an operations resource.