350-901 Developing Applications using Cisco Core Platforms and APIs (DEVCOR) Questions and Answers

Given an application that implements a basic search function as Well as a video upload function , which two load-balancing approaches

optimize the application's user experience? (Choose two.)

Drag and drop the code from the bottom onto the box where the code is missing to create a new IKEv2 policy Not all options are used

Refer to the exhibit.

A developer runs the docker service scale command to increase the number of replicas for the cisco_devnet service. The swarm cluster is using a private IP address subnet. The service has these design requirements:

• It must be hosted behind a virtual IP address that is reachable from the Internet.
• For security reasons, the Docker swarm cluster subnet must not be reachable from the Internet.

Which design approach is used to fulfill the requirements?

Refer to the exhibit

An application is developed to perform multiple API calls. The calls will be performed on the infrastructure devices Delays in the information transfer occur when the application is executed What are two reasons for the issue? (Choose two )

Refer to the exhibit.

An application has been developed to serve the users in an enterprise After HTTP cache controls are implemented m the application users report that they receive state data when they refresh the page Without removing HTTP cache controls, which change ensures that the users get current data when refreshing the page'

Refer to the exhibit.

A company has extended networking from the data center to the cloud through Transit VPC.

Which two statements describe the benefits of this approach? (Choose two.)

Which approach is used to protect East-West API traffic?

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.

Refer to the exhibit.

Drag and drop the parts of the Python code from the left onto the item numbers on the right that match the missing sections in the exhibit that consumes REST API pagination.

Refer to the exhibit.

Drag and drop the code from the bottom onto the box where the code is missing to construct a Python script that prints a message if the Cisco DNA Center wireless network health for a site is not greater than 90%. The information is collected from the wireless network devices using GET method of REST API. Not all options are used.

Which data encoding format uses gRPC by default for serializing structured sets of information?

Refer to the exhibit. The JSON response is received from the Meraki location API. Which parameter is missing?

Refer to the exhibit.

An engineer writes a script to retrieve data from a REST API and must build support for cases where the response that contains data from the server may take a longer time than normal Which code must be added to the snippet where the code is missing to catch such a timeout?

Drag and drop the code onto the snippet to update a SSID in Meraki using the Dashboard API. Not all options are used.

Refer to the exhibit.

This snippet of a script has recently started exiting abnormally with an exception stating “Unexpected HTTP Response code: 429”.

Which solution handles rate limiting by the remote API?

Refer to the exhibit.

An engineer is configuring Ansible to run playbooks against Cisco IOS XE Software. What

should be configured in ansible.cfg as the connection type?

Refer to the exhibit.

Drag and drop the steps from the left into the order of operation on the right for a successful OAuth2 three-legged authorization code grant flow,

AppGigabitEthernet interface is used as data port for a container on a Cisco Catalyst 9000 Series Switch. Which two interface configuration options should be used? (Choose two.)

A Python script must query the Cisco DNA center API for the number of unique wireless clients that are exhibiting poor health behavior. Drag and drop the code from the bottom onto the box where the code is missing to complete the script Not all options are used.

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.

Refer to the exhibit above and click on the resource tabs in the top left corner to view resources to help with this question. Python code that uses the UCS Python SDK is instantiating a service profile named ''devcore-server-01'' from service profile template ''device-template'' , then associating the service profile instance to blade 3 in chassis 7. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the Python exhibit.

Refer to the exhibit.

A developer created a Python script to retrieve interface information for the devices in a MeraKi network environment. A security analyst has reviewed the code and observed poor secret storage practices. What is the appropriate password storage approach?

A developer has built a Docker image named 'devcor73f3e94529V using the Dockerfile named 'devcor42f5e464771‘ and now needs to containerize it. Which command must the developer use?

Refer to the exhibit.

Which key value pair from the ios_ntp Ansible module creates an NTP server peer?

Refer to the exhibit above and click on the IETF Routing tab in the top left corner to help with this question. A developer is trying to update the routing instance by adding a new route to the routes list using the URL in the exhibit. What action must be taken to fix the error being received?

Refer to the exhibit.

Which two functions are performed by the load balancer when it handles traffic originating from the Internet destined to an application hosted on the file server farm? (Choose two.)

Refer to the exhibit.

A developer must review an intern's code for a script they wrote to automate backups to the storage server. The script must connect to the network device and copy the running-config to the server. When considering maintainability, which two changes must be made to the code? (Choose two.)

Refer to the exhibit.

Interface Lookback 1 must be created with IP address 10.30.0.1/24 in a Cisco IOS XE device using RESTCONF. The schema that is defined by the exhibit must be used. Which body and URI should be used for this operation?

A)

B)

C)

D)

Refer to the exhibit. A developer must create a new network object named testnetwork by using the Cisco Firepower Device Management API. The script must also handle any exceptions that occur during the request and print out any resulting errors. Which script must be used?

A team is developing a cloud-native application for network monitoring and management of various devices. An increased growth rate of users is expected. The solution must be easily managed and meet these requirements:

•able to use dependencies

•easy disposability

•flexible configuration

Which application design approach must be used?

Refer to the exhibit.

Drag and drop the code from the bottom onto the box where the code is missing to construct a Python script that will retrieve location data Not all options are used.

A developer is building an application to access a website. When running the application, an HTTP 403 error

code has been received. How should the application be modified to handle this code?

What is a risk to data privacy during the storage and transmission of data?

Refer to the exhibit.

Which code snippet completes this code to handle API rate-limit?

A developer is creating a Python script to use the Webex REST API to list joined spaces and handle and print the errors it receives. Drag and drop the code from the bottom of the code snippet onto the blanks in the code to complete the script. Not all options are used.

Refer to the exhibit.

Two editors are concurrently updating an article’s headline from their mobile devices. What results from this scenario based on this REST API sequence?

What are two methods for sending bearer access tokens in resource requests to servers? (Choose two,)

An engineer needs to configure an interface named GigabitEthernet3 with an IP address on several RESTCONF-enabled Cisco IOS XE devices. Which code snippet must be placed in the blank in the code to meet this requirement?

Which database type should be used with highly structured data and provides support for ACID transactions?

Refer to the exhibit.

An engineer needs to implement REST API error handling when a timeout or rate limit scenario is present. Which code snippet must be placed into the blank in the code to complete the API request?

A)

B)

C)

D)

A developer is creating a Python script to catch errors using REST API calls and to aid in debugging. Drag and drop the code from the bottom onto the box where the code is missing to implement control flow for REST API errors. Not all options are used.

A developer is working on a bug fix. The existing branch named ‘bugfix05328’ needs to be merged with the current working primary branch named ‘prim404880077’. All changes must be integrated into a single commit instead of preserving them as individual commits. Which git command must be used?

A Python application is being written to run inside a Cisco IOS XE device to assist with gathering telemetry data. Drag and drop the elements of the stack from the left onto the functions on the right to collect and display the telemetry streaming data.

An engineer needs to automate the configuration on a Cisco NX-OS switch. The solution must meet these requirements:

•Ansible is used

•The transport protocol is encrypted

•Support for Asynchronous requests.

Which two access mechanisms must be used? (Choose two.)

A network engineer needs to retrieve interface data using the Cisco IOS XE YANG Model. Drag and drop the

components from the bottom onto the box where the code is missing to complete the RESTCONF URI. Not all

options are used.

Refer to the exhibit.

An engineer is implementing the response for unrecoverable REST API errors. Which message needs to be placed on the snippet where the code is missing to complete the print statement?

An engineer must access multiple bots that are running in an internal infrastructure. A different HTTPS URL is required for each bot. The infrastructure has just one public IP address and a Linux server with Apache installed. Drag and drop the actions from the left into the order of steps on the right to enable access to the bots inside. Not all options are used.

Refer to the exhibit.

What is the output of this IOS-XE configuration program?

Refer to the exhibit above and click on the resource tabs in the top left corner to view resources to help with this question. Drag and drop the correct code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the cURL script that will use RESTCONF to update an interface on a CISCO IOS XE device.

What is a benefit of running multiple instances of a back-end service and using load balancing to distribute the communication between the front-end and back-end services?

A new record-keeping application for employees to track customer orders must be deployed to a company's existing infrastructure. The host servers reside in a data center in a different country to where the majority of users work. The new network configuration for the database server is: •IP: 10.8.32.10

• Subnet Mask: 255.255.255.0

• Hostname: CustOrd423320458-Prod-010

• MAC: 18-46-AC-6F-F4-52.

The performance of the client-side application is a priority due to the high demand placed on it by employees. Which area should the team consider in terms of impact to application performance due to the planned deployment?