Certified Heroku Architecture Designer v1.0

A client is running an app on 20 Standard-2x dynos. They are noticing highly variable performance when the application is experiencing a heavy load.
Which two suggestions should an Architect make in this scenario? (Choose two.)

Universal Containers (UC) uses Apache Kafka on Heroku to stream shipment inventory data in real time throughout the world. A Kafka topic is used to send messages with updates on the shipping container GPS coordinates as they are in transit. UC is using a Heroku Kafka basic-0 plan. The topic was provisioned with
8 partitions, 1 week of retention, and no compaction. The keys for the events are being assigned by Heroku Kafka, which means that they will be randomly distributed between the partitions.
UC has a single-dyno consumer application that persists the data to their Enterprise Data Warehouse (EDW). Recently, they've been noticing data loss in the
EDW.
What should an Architect with Kafka experience recommend?

A client's Heroku application syncs data between a Heroku Postgres database and a Salesforce org using the Salesforce Bulk API. The client has determined the application currently uses 90% of the client's daily Salesforce Bulk API limit.
To overcome this issue, what feature, to replace the Bulk API implementation in this scenario, should an Architect recommend?

A client wants to use Heroku Connect to sync data from a Heroku Postgres table to a Salesforce org. The client only needs to sync a specific subset of the rows in the table.
How should this be performed?

A client requires that their web application's logs are accessible only from within the same isolated network as the application itself.
Which solution should an Architect recommend in this scenario?

A client has a web application that persists data to a local JSON file. They are migrating the application to Heroku. In order for the application to conform to the
Twelve-Factor methodology, what changes should an Architect recommend?

Which is a characteristic of an add-on that is "available" for applications in Private Spaces but not "installable" in a Private Space?

A client's Heroku application is publishing messages to an instance of Apache Kafka on Heroku.
What does a second Heroku application need to do to consume those messages?

A client provisions a Heroku Postgres database in the EU region.
Which two services related to Heroku Postgres are located in the U.S.? (Choose two.)

Universal Containers is developing a new application that has a lightweight Node.js front end. They will also be using a Java-based API, which combines data with
Salesforce customer data. All of the data, and the API, is highly confidential.
What should an Architect suggest to enforce security?

Which two Heroku features require Heroku Enterprise Teams? (Choose two.)

A client runs an application on a background worker dyno. The application allows its users to request personalized information as a PDF. At peak usage, the app processes millions of requests at once. The resulting number of requests has caused a bottleneck that is impacting its performance.
Which two solutions can an Architect recommend to resolve the bottleneck and improve performance? (Choose two.)

A client's application needs to run in a European country for data residence purposes.
What is a consideration in this scenario?

Universal Containers wants to limit the total cost of their Heroku usage while they're getting started on the platform. To accomplish this, they are considering replacing certain add-ons with comparable open-source components, but the development team doesn't want to lose access to certain features that the add-ons provide.
Which option should an Architect recommend for reducing add-on costs without affecting feature availability?