Universal Containers experienced an outage with their production Heroku Postgres database due to a fault with the underlying infrastructure. The database was unavailable for an hour. The database is on the Standard-0 plan.
Which two actions should an Architect recommend to mitigate such database failures and outages in the future? (Choose two.)

• A.Create a follower database that uses the same plan as the leader.
• B.Migrate the database to a Premium-tier plan.
• C.Migrate the database to a larger Standard-tier plan.
• D.Create a fork of the database that uses the same plan as the leader.

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A platform as a service (PaaS) is:

• A.A way to deliver hardware and software tools, such as those needed for application development, to users as a service
• B.A monthly bare-metal server rental service
• C.A piece of software in the cloud that you can use just by logging in
• D.A service to help you buy and install your own server hardware

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Universal Containers is developing a Salesforce app that invokes a Heroku app's web service, which asynchronously generates customer invoices. The Heroku app is deployed to a Private Space. When an invoice is ready, the Heroku app sends a POST request to the Salesforce REST API. Which two options should an Architect recommend to ensure that neither the Salesforce nor the Heroku app is accessible from the public internet? Choose 2 answers.

• A.Restrict the Private Space's trusted IP range to Salesforce IP addresses
• B.Restrict the Private Space's trusted IP range to Universal Containers' VPN
• C.Restrict the Salesforce connected app's login IP ranges to Universal Containers' VPN
• D.Restrict the Salesforce connected app's login IP ranges to the stable outbound IP addresses of the Private Space

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Applications on Heroku that use Salesforce REST APIs can use which authentication mechanisms:

• A.OAuth web or user-agent flow in which the user authorizes a connected app using browser redirects
• B.Anonymous access without credentials on trusted networks
• C.None of these
• D.Username and password with an OAuth connected app

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Universal Containers has recently experienced a higher volume of traffic on their mobile app hosted on Heroku. When Universal Containers was running 4 standard-2x dynos with 1 GB RAM each, they encountered multiple H12 ("request timeout") errors. The app never consumed more than 800 MB of RAM.
They then switched to performance-m dynos, with 2.5 GB RAM, and set autoscaling to a maximum of 2 dynos. However, they still encountered H12 ("request timeout") errors.
What remediation should an Architect recommend to alleviate this problem?

• A.Replace autoscaling with a manual scaling option of 2.
• B.Add a logging add-on from the Elements marketplace.
• C.Upgrade to performance-L dynos with 14 GB RAM.
• D.Move long-running tasks to worker dynos.

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