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Breaking Down the Key Knowledge Areas of 350-901
Cisco 350-901 DEVCOR is a 120-minute exam that can be taken at Pearson VUE testing centers or online. Here's what you should know to pass it hassle-free:
- Security and application deployment
The topics included in this domain cover the principles of end-to-end encryption, defining the secret storage approach, the use of Docker for containerizing an app, and diagnosing a CI/CD pipeline failure. Finally, the candidates have to understand the benefits of static code analysis as well as continuous testing, know effective strategies for logging, and more.
- Using APIs
This topic requires mastery of the implementation of robust REST API error handling, skills in applying the control flow of consumer code as far as unrecoverable REST API errors are involved, and the ability to define possible approaches for optimizing API usage using cache controls. What's more, this domain will also confirm if you understand the OAuth2 concepts.
- Software development and design
This domain includes the concepts such as application design concerning scalability, modularity, resiliency, observability, and high availability. Also, the candidates will be expected to explain release packaging and dependency management principles, architectural patterns, and distributed applications. Finally, learners should know how to use advanced version control operations with Git and understand the construction of a sequence diagram that accommodates API calls.
- Cisco platforms
This section will assess your ability to construct API requests for implementing chatops with Webex Teams API, API requests for creating and deleting objects with the Firepower Device Management (FDM), and API requests for retrieving data from Intersight. Also, the questions under this section confirm if you understand AppDynamics and its capabilities, the construction of a Python script with the Cisco DNA center APIs for retrieving and displaying wireless health information, and Cisco DNA center APIs.
- Automation and infrastructure
This section is focused on the areas such as model-driven telemetry, setting up network parameters by constructing certain workflows, and the use of RESTCONF. Also, one should understand how to host an app on a network device and how to select the most appropriate configuration management solution.
NEW QUESTION 150
DRAG DROP
Refer to the exhibit. A system administrator has installed a Linux-based alarm system in their home that can execute a Bash shell script when an intruder is detected. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to create a chat-ops script that will notify of alarms via the Webex Teams REST API. Not all code snippets are used.
Answer:
Explanation:
NEW QUESTION 151
Refer to the exhibit.
A developer is creating a Python script to use the Webex Teams REST API to list joined spaces, retry after the server-specified amount of time if a "Too many requests" response is received, and print any other error that is received. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the script. Not all code snippets are used.
Answer:
Explanation:
NEW QUESTION 152 
Refer to the exhibit. An engineer needs to change the IP address via RESTCONF on interface GigabitEthemet2. An error message is received when the script is run.
Which amendment to the code will result in a successful RESTCONF action?
- A. Issue a DELETE before PATCH
- B. Change POST to GET
- C. Change POST to PATCH
- D. Issue a DELETE before POST
Answer: C
Explanation:
Section: Mixed Questions
NEW QUESTION 153
Refer to the exhibit.
Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the script to implement control flow.
Answer:
Explanation:
NEW QUESTION 154
Drag and drop the characteristics from the left onto the correct data processing techniques on the right, in the context of GDPR.
Answer:
Explanation:
NEW QUESTION 155
A web application is susceptible to cross-site scripting. Which two methods allow this issue to be mitigated?
(Choose two.)
- A. Use only drop downs.
- B. Remove all HTML/XML tags from user input.
- C. Limit user input to acceptable characters.
- D. Encrypt user input on the client side.
- E. Use AES encryption to secure the script.
Answer: C,E
Explanation:
Section: Application Deployment and Security
NEW QUESTION 156
Refer to the exhibit.
A developer is creating a Python script by using Cisco DNA Center APIs Drag and drop the code from the bottom onto the box where the code is missing in the Python script to retrieve and display wireless health information for each site Not all options are used.
Answer:
Explanation:
NEW QUESTION 157
A developer IS deploying an action to automate the configuration and management of Cisco network switches and routers. The application must use REST API interlace to achieve programmability. The security team mandates that the network must be protected against DDoS attacks. What mitigates the attacks without impacting genuine requests?
- A. IP address filtering at the application layer
- B. API rate limiting at the application layer
- C. firewall on the network perimeter
- D. traffic routing on the network perimeter
Answer: C
NEW QUESTION 158
Drag and drop the steps from the left into the correct sequence on the right to describe how to use Git to maintain the current HEAD and revert back to a previous commit, while undoing all intermediate commits.
Answer:
Explanation:
NEW QUESTION 159 
Refer to the exhibit above and click on the resource tabs in the top left corner to view an IETF TANG MODEL and a Python file that changes the configuration via RESTCONF. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the JSON file that changes configuration of interface GigabitEthernet1 to have an IPv4 configuration of 10.10.0.1/24. Not all options are used.
Answer:
Explanation:
NEW QUESTION 160
Drag and drop the expressions from below onto the code to implement error handling. Not all options are used.
Answer:
Explanation:
NEW QUESTION 161
Which two strategies are used to protect personally identifiable information? (Choose two.)
- A. Only encrypt usernames and passwords for efficient lookup.
- B. Encrypt data in transit.
- C. Encrypt hash values of data.
- D. Only hash usernames and passwords for efficient lookup.
- E. Encrypt data at rest.
Answer: B,E
Explanation:
Encryption of data in transit and Data at rest is the way to go for all the choices provided.
NEW QUESTION 162 
Refer to the exhibit. Which code snippet is required in the headers to successfully authorize wireless information from Cisco DNA Center?
- A. headers = {'Authorization':'Bearer ASDNFALKJER23412RKDALSNKF'}
- B. headers = {'Authorization':'Basic YWRtaW46R3JhcGV2aW5IMQ=='}
- C. headers = {'X-auth-token':'fa8426a0-8eaf-4d22-8e13-7c1b16a9370c'}
- D. headers = {'Content-type':'application/json'}
Answer: C
Explanation:
Section: Cisco Platforms
NEW QUESTION 163
A custom dashboard of the network health must be created by using Cisco DNA Center APIs An existing dashboard is a RESTful API that receives data from Cisco DNA Center as a new metric every time the network health information is sent from the script to the dashboard Which set of requests creates the custom dashboard?
- A. GET request to Cisco DNA Center to obtain the network health information and then a PUT request to the dashboard to publish the new metric
- B. GET request to Cisco DNA Center to obtain the network health information and then a POST request to the dashboard to publish the new metric
- C. POST request to Cisco DNA Center to obtain the network health information and then a GET request to the dashboard to publish the new metric
- D. PUT request to Cisco DNA Center to obtain the network health information and then a POST request to the dashboard to publish the new metric
Answer: B
NEW QUESTION 164
Drag and drop the code from the bottom onto the box where the code is missing to create a new Cisco Webex space and attach a previously configured bot named 'sampleBot'. Not all options are used.
Answer:
Explanation:
NEW QUESTION 165
Drag and Drop Question
Drag and drop the code from the bottom onto the box where the code is missing in the Python script to execute a REST API call to query all the NTP policy names and print the name of each policy. Not all options are used.
Answer:
Explanation:
NEW QUESTION 166
A web application is susceptible to cross-site scripting. Which two methods allow this issue to be mitigated?
(Choose two.)
- A. Remove all HTML/XML tags from user input.
- B. Use only drop downs.
- C. Use AES encryption to secure the script.
- D. Limit user input to acceptable characters.
- E. Encrypt user input on the client side.
Answer: A,D
NEW QUESTION 167
Refer to the exhibit.
Drag and drop the correct parts of the Dockerfile from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the Dockerfile to successfully build and deploy a container running a Python application. Not all parts of the Dockerfile are used.
Answer:
Explanation:
NEW QUESTION 168
Refer to the exhibit.
Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the script to implement control flow.
Answer:
Explanation:
NEW QUESTION 169
A developer is creating a Python script to use the Webex Teams REST API to list joined spaces, and gracefully handle and print the errors it receives. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the script.
Answer:
Explanation:
NEW QUESTION 170
Refer to the exhibit.
Recently, users have reported problems logging into an application with their usernames and passwords. The logs have captured an authentication attempt. Based on the messages and errors contained, what is the cause of the problem?
- A. There is a time synchronization issue between the application and LDAP.
- B. Users are providing incorrect credentials when logging in.
- C. The sign-in redirection is sending clients to the wrong server for SSO.
- D. The LDAP server used for authentication fails to respond to connection requests
Answer: C
NEW QUESTION 171 
Refer to the exhibit. The cURL POST request creates an OAuth access token for authentication with FDM API requests. What is the purpose of the file "@token_data" that cURL is handling?
- A. This file is a container to log possible error responses in the request.
- B. This file is given as input to store the access token received from FDM.
- C. This file is used to send authentication-related headers.
- D. This file contains raw data that is needed for token authentication.
Answer: B
Explanation:
Section: Using APIs
NEW QUESTION 172
Drag and drop the code onto the snippet to update a SSID in Meraki using the Dashboard API. Not all options are used.
Answer:
Explanation:
NEW QUESTION 173
An application is being built to collect and display telemetry streaming data. Drag and drop the elements of this stack from the left onto the correct element functions on the right.
Answer:
Explanation:
NEW QUESTION 174
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