GCP-ARCH-Design-Process-1-2

You’ve re-architected a monolithic web application so state is not stored in memory on the web servers, but in a database instead. This has caused slow performance when retrieving user sessions though. What might be the best way to fix this?

• Move session state back onto the web servers and use sticky sessions in the load balancer.

• Use a caching service like Redis or Memorystore.

• Increase the number of CPUs in the database server.

• Make sure all web servers are in the same zone as the database.

Which below would violate 12-factor app best practices?

• Store configuration information in your source repository for easy versioning

• Treat logs as event streams and aggregate logs into a single source

• Keep development, testing, and production as similar as possible

• Explicitly declare and isolate dependencies

You’re writing a service and you need to handle a client sending you invalid data in the request. What should you return from the service?

• An XML exception

• A 200 error code

• A 400 error code

• A 500 error code

You’re building a RESTful microservice. Which would be a valid data format for returning data to the client?

• JSON

• XML

• HTML

• All of the above

What best describes a user story? Choose the best answer from the following choices.

• It is a requirement of the system you are developing.

• It is a short description of a feature written from the user’s point of view.

• It is a short description of a typical person using the system.

• It is a narrative that describes the sequence of steps a typical user would perform to accomplish some task or goal when using the system.

Using SMART criteria, which below would be the least effective KPI?

• Page views per hour

• User signups per month

• Clicks per session

• User experience design

Which best describes an SLO?

• It is a contract with end users that guarantees service quality.

• It is a target measure you want your service to achieve.

• It is a measurable, time-bound key performance indicator for your application.

• It is a short, measurable description of an application feature.