Universal Containers has a microservices architecture on Heroku. Onemicroservice. named the Metrics Microservice. periodically fetches metrics from a fleet of loT sensors. Then, the Metrics Microservice is required to send relevant metrics to each of the other microservices using REST. When a new microservice is added to the architecture, the Metrics Microservice must send metrics to that new microservice too. As a result, adding microservices to the architecture causes performance issues. How should an Architect recommend changing this architecture to improve its scalability?

A. Configure each microservices to directly fetch the sensor metrics that are relevant to it.

B. Use Private Space DNS Service Discovery to reduce the a mountof time required for the Metrics Microservice to obtain each other microservice's IP address

C. Configure the other microservices to pull the Metrics Microservice for updates every five seconds

D. Use Apache Kafka on Heroku to publish metrics to a topic that the other microservices can consume.

Universal Containers acquires a company that runs an application on Google Cloud Platform (GCP). TheGCP application needs to communicate securely with a Heroku application. The Heroku application has Internal Routing enabled and is running in a Private Space. Which two recommendations should an Architect make to satisfy this use case? Choose 2 answers.

A. Ensure that the Private Space and GCP use distinct CIDR ranges

B. Disable Internal Routing on the Heroku app.

C. Ensure that the Private Space and GCP use matching CIDR ranges.

D. Establish a secure site-to-site VPN connection between the Private Spaceand GCP.

Part of a client's design is the ability to easily share between two applications running on Heroku.
What should an Architect recommend?

A. Attach a single storage add-on, such as Heroku Postgres, to both applications.

B. Create Foreign Data Wrappers to expose the tables from one database to another.

C. Provision Heroku Connect tosync the data into a custom object in Salesforce.

D. Provision Apache Kafka on Heroku to easily stream the data between the two apps.

Callouts in Apex trigger support which authentication mechanisms:

A. Pre-shared keys

B. username and password credentials

C. All of these

D. OAuth flows using named credentials in the Remote Site settings

Which two logs and logging recommendations are prescribed by the Twelve-Factor app methodology? Choose2 answers.

A. Apps should not concernthemselves with routing or storing logs

B. Logs from all processes and backing services should be aggregated together.

C. Logs should be written to a shared file system for scalability.

D. Apps should only keep a limited, rolling buffer of logs available