CCNP Practice Question: An engineer is using a Python script to retrieve…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  The interface name must be URL-encoded because it contains a slash.

  Why it's wrong here

  GigabitEthernet1 contains no slash, so URL-encoding is unnecessary; the 404 arises because the statistics container is not modelled under ietf-interfaces. It is tempting because interface names such as GigabitEthernet0/1 do require encoding, and would be correct for those names.

• ✓

  The URI is incorrect; statistics are under 'interfaces-state' not 'interfaces'.

  Why this is correct

  The ietf-interfaces YANG model separates configuration data under 'interfaces' from operational state under 'interfaces-state'. Statistics are operational, so requesting them beneath 'interfaces' targets a non-existent node, producing the 404 despite the interface existing and being operational.

• ✗

  The device requires authentication; the script must include a valid token.

  Why it's wrong here

  A missing token yields 401 Unauthorised, not 404, so authentication is not the cause here. It is tempting because RESTCONF does require token or basic authentication, and omitting credentials is a common scripting error; it would be correct if the response were 401 rather than 404.

• ✗

  The REST API is not enabled on the device; the engineer must enable it first.

  Why it's wrong here

  With RESTCONF disabled, the HTTPS request typically fails to connect or returns 404 from the web server, but the stem states the interface exists and is operational, implying the API path is reachable. It is tempting because enabling RESTCONF is a prerequisite, and would be correct if no RESTCONF service were listening.