This is a machine learning method that involves rewarding and punishing an agent for its actions in an environment. The agent learns by trial and error to maximize the rewards and minimize the penalties.This is how Mist AI performs Radio Resource Management (RRM) to optimize the RF radio waves that transmit network traffic in wireless LANs1.

Mist has detected a bad cable by using two methods:port flappingandinterface errors. These methods are based on the data collected by the Mist access points, switches, and WAN edge devices from the cable statistics, link statistics, link errors, and traffic patterns.

Port flapping is a condition where a port on a switch or a device repeatedly goes up and down, causing network instability and packet loss. Port flapping can be caused by a bad cable that has physical damage, loose connection, or interference. Mist can detect port flapping by monitoring the link status and the number of link state changes on the port.

Interface errors are errors that occur on the interface level of a switch or a device, such as input errors, output errors, frame errors, CRC errors, MTU errors, etc. Interface errors can indicate a bad cable that has poor quality, mismatched speed or duplex settings, or incorrect wiring. Mist can detect interface errors by monitoring the error counters and the error rates on the interface.

According to the Mist documentation1, the Dashboard API is a modern,RESTfulAPI using HTTPS requests to a URL and JSON as a human-readable format. The API is available to any customer with a Mist account and is very well documented.

RESTful APIs are considered data-driven because they use HTTP methods (such as GET, POST, PUT, DELETE) to manipulate data resources on a server2. They also follow a set of design principles that make them scalable, uniform, and stateless.

A microservice can be added without system downtime. This is because microservices are independent and loosely coupled components that communicate over well-defined APIs. Adding a new microservice does not affect the functioning of other existing microservices or the overall application.The new microservice can be deployed and integrated seamlessly with the rest of the system1.

A microservice can be updated without system downtime. This is because microservices allow each service to be developed, tested, and deployed independently of other services. Updating a microservice does not require changing or restarting the entire application.The updated microservice can be rolled out gradually or reverted easily if needed2.

The correct answer is C. Devices retain their configurations but Mist management GUI functionality related to expired subscriptions are not configurable by the user.

According to the official Juniper documentation1, post subscription expiration, your network will continue to operate. However, Juniper Mist does reserve the right to give read only access or terminate access post 90 days of subscription expiration, if you have no intent to renew subscriptions. No support will be available if there is no active subscription.