Cisco Cisco Certified DevNet Professional 350-901 Questions & Answers

• Question 141:

  Refer to the exhibit.

  

  A network engineer created a simple Python Flask application but must incorporate a CSRF token. Which code snippet must be added in the blank in the script to manually incorporate the token?

  A. _access_tokenM value=M{{ csrf_token}}

  B. _csrMoken" value="{{ csrf_grant()}}

  C. _csrMoken" value="{{ csrf_token()}}

  D. _xssjoken" value="{{ csrMoken}}

  Correct Answer: C

• Question 142:

  An application is developed in order to communicate with Cisco Webex. For reporting, the application must retrieve all the messages sent to a Cisco Webex room on a monthly basis.

  Which action calls /v1/messages directly?

  A. Set up a webhook that has messages as the resource type and store the results locally.

  B. Utilize the pagination functionality by defining the max property.

  C. Recursively call the /vl/messages endpoint by using the beforeMessage property.

  D. Filter the response results by specifying the created property in the request.

  Correct Answer: C

• Question 143:

  Refer to the exhibit.

  

  A network engineer must integrate error handling tor time-outs on network devices using the REST interface. Which line of code needs to be placed on the snippet where the code is missing to accomplish this task?

  A. elif resp.status_code == 429 or serf._retries < selff._MAX_RETRIES:

  B. elif resp.status_code == 404 or self, retries < self._MAX_RETRIES:

  C. elif resp.status_code == 429 and self .retries < self._MAX_RETRIES:

  D. elif resp.status_code == 404 and self._relries < self._MAX_RETRIES:

  Correct Answer: C

• Question 144:

  Refer to the exhibit.

  

  Which URI string retrieves configured static routes in a VRF named CUSTOMER from a RESTCONF-enabled device?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D

• Question 145:

  Refer to the exhibit.

  

  A network engineer developed an Ansible playbook and committed it to GitLab. A GitLab CI pipeline is started but immediately fails. What is the issue?

  A. The runner task uses an incorrect parameter.

  B. The Ansible playbook task has a formatting issue.

  C. The Ansible playbook has an undefined variable.

  D. The runner is running the wrong Docker version.

  Correct Answer: B

• Question 146:

  {'lat': 37.4180951010362, 'lng': -122.098531723022, 'address': '', 'serial': 'Q2HP-F5K5- F98Q',

  'mac': '88:15:44:ea:f5:bf', 'lanIp': '10.10.10.15',

  'url': 'https://n149.meraki.com/DevNetSandbox/n/EFZDavc/manage/nodes/new_list/78214561218351',

  'model': 'MS220-8P', 'switchProfileId': None, 'firmware': 'switch-11-31', 'floorPlanId': None}

  A developer needs to find the geographical coordinates of a device on the network L_397561557481105433 using a Python script to query the Meraki API. After running response = requests.get() against the Meraki API, the value of response.text is shown in the exhibit.

  What Python code is needed to retrieve the longitude and latitude coordinates of the device?

  A. latitude = response.text['lat'] longitude = response.text['lng']

  B. latitude = response.json()['lat'] longitude = response.json()['lng']

  C. latitude = response.json()[0] longitude = response.json()[1]

  D. latitude = response.text[0] longitude = response.text[1]

  Correct Answer: A

• Question 147:

  Refer to the exhibit.

  

  One part of an application routinely uses the Cisco Meraki API to collate data about all clients Other parts of the application also use the Meraki API, but a single API key is used within the application The organization has approximately 4.000 clients across 30 networks Some of the application users report poor performance and missing data.

  Which two changes improve the performance of the application? (Choose two.)

  A. Check for HTTP code 429 and wait until Retry-After time before further calls are made

  B. Configure multiple API keys in the application and rotate usage of each one.

  C. Use random values in the User-Agent header when HTTP calls are made.

  D. Use fewer API calls to create a more efficient endpoint.

  E. Check API response payloads for later reuse in real time during code execution.

  Correct Answer: AB

• Question 148:

  How should logs for an application be created?

  A. Use a standard and easily configurable logging framework.

  B. Use fault-tolerant protocols.

  C. Monitor for backlogs and outages.

  D. Filter sensitive data before transmitting logs.

  Correct Answer: A

• Question 149:

  In the three-legged OAuth2 process, after the authorization server presents a form to the resource owner to grant access, what is the next step?

  A. The resource owner authenticates and optionally authorizes with the authorization server.

  B. The user who owns the resource initiates a request to the OAuth client.

  C. If the resource owner allows access, the authorization server sends the OAuth client a redirection.

  D. A form to allow or restrict access is submitted by the owner of the resource.

  Correct Answer: C

  "If the resource owner grants access, the authorization server redirects the user's browser back to the client using the redirection URI provided earlier (in the request or during client (registration). The redirection URI includes an authorization code and any local state provided by the client earlier" "Assuming the resource owner grants access, the authorization server redirects the user-agent back to the client using the redirection URI provided earlier (in the request or during client (registration). The redirection URI includes an authorization code and any local state provided by the client earlier."

• Question 150:

  Which action enhances end-user privacy when an application is built that collects and processes the location data from devices?

  A. Pepper the MAC address for each device.

  B. Salt the MAC address for each device.

  C. Implement an algorithmic information theoretic loss to the MAC address for each device.

  D. Use the network device serial number to encrypt the MAC address for each device.

  Correct Answer: C