hardMultiple ChoiceObjective-mapped

200-901 Practice Question: A Python script using ncclient to configure a…

Exhibit

Refer to the exhibit.
from ncclient import manager

with manager.connect(
    host="10.0.0.1",
    port=830,
    username="admin",
    password="secret",
    hostkey_verify=False
) as m:
    config = '''
    <config>
      <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
        <hostname>NewRouter</hostname>
      </native>
    </config>'''
    m.edit_config(target="running", config=config)

A Python script using ncclient to configure a Cisco IOS XE device fails with an error that the capability 'urn:ietf:params:xml:ns:netconf:base:1.0' is missing. What is the most likely cause?

⚠ Common exam trap

Cisco often tests the distinction between authentication/SSH errors and NETCONF capability negotiation errors, trapping candidates who confuse a missing capability with a credential or transport issue.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The device does not have NETCONF enabled

The error indicates that the NETCONF base capability (urn:ietf:params:xml:ns:netconf:base:1.0) is not advertised by the device. This capability is mandatory for any NETCONF server; its absence means the device is not running a NETCONF server or NETCONF is not enabled. On Cisco IOS XE, NETCONF must be explicitly enabled via the 'netconf-yang' feature, and the error occurs when the ncclient client attempts to establish a session but the device does not respond with the required capability.

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 device does not have NETCONF enabled
Why this is correct
If NETCONF is not enabled on the device, it will not advertise the required capabilities.
✗
The username or password is incorrect
Why it's wrong here
Incorrect credentials would cause an authentication error, not a capability error.
✗
The edit-config operation should be on candidate instead of running
Why it's wrong here
Target datastore selection would cause a different error, not a missing capability.
✗
The host key verification is disabled incorrectly
Why it's wrong here
Disabling host key verification is fine; it does not affect capability negotiation.

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200-901 Practice Question: A Python script using ncclient to configure a…

Exhibit

Why each option matters

Option-by-option breakdown

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