A network automation script authenticates to a device's API using OAuth2. The script obtains an access token and needs to maintain the session across multiple requests. What is the best practice for including the token in subsequent API calls?

Use the token as the username in Basic Auth.

Store the token in a cookie and let the requests session handle it automatically.

Include the token in the Authorization header as 'Bearer ' for each request.

Append the token as a query parameter to the URL.

A Python script receives a JSON response from a network device's API. The response contains a nested structure with interface statistics. The engineer needs to extract the 'in_octets' value for interface 'GigabitEthernet0/1'. Which Python expression correctly accesses this value?

data['interfaces']['GigabitEthernet0/1']['in_octets']

data['interfaces']['GigabitEthernet0/1']['statistics']['in_octets']

data['interfaces'][0]['statistics']['in_octets']

data.get('interfaces').get('GigabitEthernet0/1').get('in_octets')

An engineer is using a NETCONF API to modify the hostname of a device. The API requires an XML payload. Which Python code snippet correctly constructs and sends the XML payload?

payload = ' NewName '; requests.put(url, data=payload)

payload = ' NewName '; requests.post(url, data=payload)

payload = ' NewName '; requests.post(url, data=payload, headers={'Content-Type':'application/xml'})

payload = {'hostname': 'NewName'}; requests.post(url, json=payload)

A network engineer is writing a Python script to read a YAML configuration file that defines a list of interfaces to be configured. The YAML file contains a mapping with a sequence of interfaces. Which Python code snippet correctly loads the YAML and accesses the first interface name?

import yaml; with open('config.yaml') as f: data = yaml.safe_load(f); print(data['interfaces'][0]['name'])

import yaml; with open('config.yaml') as f: data = yaml.safe_load(f); print(data['interfaces']['name'])

import json; with open('config.yaml') as f: data = json.load(f); print(data['interfaces'][0]['name'])

import yaml; with open('config.yaml') as f: data = yaml.load(f); print(data['interfaces']['name'])

CCIE Security

Domain 3Objective 9

3.9 Interaction with Network Devices Through APIs Using Basic Python Scripts CCIE-SECURITY Practice Questions (Page 12)

Part of the 3.0 Security Infrastructure domain, which accounts for 15% of the CCIE-SECURITY exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 1–1 from this objective — we provide 61 practice questions to prepare you well beyond it. (estimate)

61questions here

13free pages

11concepts

15%of the exam

Questions 56–60

56application · medium
A network automation script authenticates to a device's API using OAuth2. The script obtains an access token and needs to maintain the session across multiple requests. What is the best practice for including the token in subsequent API calls?
Select an answer first
57application · medium
A Python script receives a JSON response from a network device's API. The response contains a nested structure with interface statistics. The engineer needs to extract the 'in_octets' value for interface 'GigabitEthernet0/1'. Which Python expression correctly accesses this value?
Select an answer first
58application · medium
An engineer is using a NETCONF API to modify the hostname of a device. The API requires an XML payload. Which Python code snippet correctly constructs and sends the XML payload?
Select an answer first
59application · medium
A network engineer is writing a Python script to read a YAML configuration file that defines a list of interfaces to be configured. The YAML file contains a mapping with a sequence of interfaces. Which Python code snippet correctly loads the YAML and accesses the first interface name?
Select an answer first
60application · medium
A security engineer is evaluating a network device's REST API to automate firewall rule changes. The API documentation states that the API is RESTful and uses standard HTTP methods. The engineer wants to update a specific firewall rule without changing other rules. Which HTTP method should be used?
Select an answer first

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