Cisco Cisco Certified DevNet Professional 350-901 Questions & Answers

• Question 311:

  An enterprise refactors its monolithic application into a modem cloud-native application that is based on microservices. A key requirement of the application design is to ensure that the IT team is aware of performance issues or bottlenecks in

  the new application.

  Which two approaches must be part of the design considerations'' (Choose two.)

  A. Periodically scale up the resources of the host machines when the application starts to experience high loads

  B. Instrument the application code to gather telemetry data from logs, metrics or tracing

  C. Adopt a service-oriented architecture to handle communication between the services that make up the application

  D. Deploy infrastructure monitoring agents into the operating system of the host machines

  E. Implement infrastructure monitoring to ensure that pipeline components interoperate smoothly and reliably

  Correct Answer: BE

• Question 312:

  Which two techniques protect against injection attacks? (Choose two.)

  A. input validation

  B. trim whitespace

  C. limit text areas to 255 characters

  D. string escaping of user free text and data entry

  E. only use dropdown, checkbox, and radio button fields

  Correct Answer: AD

• Question 313:

  An organization manages a large cloud-deployed application that employs a microservices architecture. No notable issues occur with downtime because the services of this application are redundantly deployed over three or more data center regions. However, several times a week reports are received about application slowness. The container orchestration logs show faults in a variety of containers that cause them to fail and then spin up brand new.

  Which action must be taken to improve the resiliency design of the application while maintaining current scale?

  A. Update the base image of the containers.

  B. Test the execution of the application with another cloud services platform.

  C. Increase the number of containers running per service.

  D. Add consistent "try/catch(exception)" clauses to the code.

  Correct Answer: A

• Question 314:

  Refer to the exhibit.

  

  Refer to the exhibit A Docker swarm service is currently running m a local data center The service is hosting an HTML website it the container fads then the service becomes unavailable The design must meet these requirements

  The service must be highly available and resilient against a data center outage. The service must be accessible from a single URL The HTTP session must remain on the server from which the original request was sent Failure of the server must force the client to reconnect

  Which two design approaches must be used to meet the requirements? (Choose two.)

  A. Create another swarm cluster within a data center and deploy a secondary instance of the service.

  B. Create another node in the swarm duster to scale the service across the nodes over two replicas.

  C. Configure an external load balancer to route requests to the swarm service by using session persistence

  D. Scale the Docker swarm service to 2 and set endpoint-mode to DNSRR instead of the default value of VIP

  E. Configure a routing mesh to route requests to the swarm service by using NAT on the network side

  Correct Answer: BC

• Question 315:

  Which type of file is created from issued intermediate, root, and primary certificates for SSL installation on a server?

  A. DER

  B. CSR

  C. PEM

  D. CRT

  Correct Answer: C

  SSL .pem files (concatenated certificate container files), are frequently required for certificate installations when multiple certificates are being imported as one file.

• Question 316:

  Refer to the exhibit.

  

  Which code snippet is required in the headers to successfully authorize wireless information from Cisco DNA Center?

  A. headers = {`X-auth-token':'fa8426a0-8eaf-4d22-8e13-7c1b16a9370c'}

  B. headers = {`Authorization':'Basic YWRtaW46R3JhcGV2aW5IMQ=='}

  C. headers = {`Authorization':'Bearer ASDNFALKJER23412RKDALSNKF"}

  D. headers = {`Content-type':'application/json}

  Correct Answer: A

• Question 317:

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

  A. time series

  B. document

  C. graph

  D. relational

  Correct Answer: D

• Question 318:

  Which two strategies are used to protect personally identifiable information? (Choose two.)

  A. Encrypt data in transit.

  B. Encrypt hash values of data.

  C. Encrypt data at rest.

  D. Only hash usernames and passwords for efficient lookup.

  E. Only encrypt usernames and passwords for efficient lookup.

  Correct Answer: AC

• Question 319:

  Refer to the exhibit.

  

  An engineer is managing a network that consists of Cisco IOSXE devices. There is a need to retrieve the details of the interface GigabitEthernet2 using RESTCONF. Which URI will accomplish this by providing the same response as shown in the JSON body?

  

  A. B. C. D.

  Correct Answer: D

• Question 320:

  What is a capability of the End User Monitoring feature of the AppDynamics platform?

  A. discovers traffic flows, nodes, and transport connections where network or application/network issues are developing

  B. monitoring local processes, services, and resource use, to explain problematic server performance

  C. identifies the slowest mobile and IoT network requests, to locate the cause of problems

  D. provides metrics on the performance of the database to troubleshoot performance- related issues

  Correct Answer: C

  Reference: https://docs.appdynamics.com/display/PRO21/Overview+of+End+User+Monitoring