Free Developing Applications using Cisco Core Platforms and APIs Exam 350-901 Exam Practice Test

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

• JSON
• YAML
• Protobuf
• XML

How is an OAulh2 three-legged authentication flow initiated?

• The user makes a roquost to the OAuth client
• Exchange the key f
• Construct an API call to retrieve the credentials.
• Get the authorization code.

A developer is building an application to access a website. When running the application, an HTTP 403 errorcode has been received. How should the application be modified to handle this code?

• Create a loop on cancel the operation and run a new one after the code is received.
• Use exponential backoff when retrying distributed services and other remote endpoints.
• Build a try/except around the urlopen to find errors occurring in the request.
• Redirect the request to an internal web server and make a new request from the internal resource.

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.)

• Periodically scale up the resources of the host machines when the application starts to experience high loads
• Instrument the application code to gather telemetry data from logs, metrics or tracing
• Adopt a service-oriented architecture to handle communication between the services that make up the application
• Deploy infrastructure monitoring agents into the operating system of the host machines
• Implement infrastructure monitoring to ensure that pipeline components interoperate smoothly and reliably

Where should distributed load balancing occur in a horizontally scalable architecture?

• firewall-side/policy load balancing
• network-side/central load balancing
• service-side/remote load balancing
• client-side/local load balancing

An Etag header is included in the HTTP response for an API resource. What are two benefits of using the value of the Etag for future interactions involving the same API resource? (Choose two.)

• caching and optimization of response payloads
• creating conditional requests
• categorizing and comparing this API resource with others
• checking the integrity of the resource
• requesting the list of operations authorized for this resource

What is the unique identifier in the 0Auth2 three-legged authorization code flow?

• client ID
• resource server
• resource owner
• authorization server

An organization manages a large cloud-deployed application that employs a microservices architecture across multiple data centers. Reports have received about application slowness. The container orchestration logs show that faults have been raised in a variety of containers that caused them to fail and then spin up brand new instances.Which two actions can improve the design of the application to identify the faults? (Choose two.)

• Automatically pull out the container that fails the most over a time period.
• Implement a tagging methodology that follows the application execution from service to service.
• Add logging on exception and provide immediate notification.
• Do a write to the datastore every time there is an application failure.
• Implement an SNMP logging system with alerts in case a network link is slow.

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?

• traffic routing on the network perimeter
• firewall on the network perimeter
• API rate limiting at the application layer
• IP address filtering at the application layer

When an application is designed that requires high availability, what is a reason to use a cross-region cloud?

• Provide disaster recovery protection
• Protect from a single component failure
• Minimize costs
• Account for failure in another zone