For this question, refer to the TerramEarth case study
You analyzed TerramEarth's business requirement to reduce downtime, and found that they can achieve a majority of time saving by reducing customers' wait time for parts You decided to focus on reduction of the 3 weeks aggregate reporting time Which modifications to the company's processes should you recommend?

• A.Migrate from FTP to SFTP transport, develop machine learning analysis of metrics, and increase dealer local inventory by a fixed factor.
• B.Migrate from CSV to binary format, migrate from FTP to SFTP transport, and develop machine learning analysis of metrics.
• C.Migrate from FTP to streaming transport, migrate from CSV to binary format, and develop machine learning analysis of metrics.
• D.Increase fleet cellular connectivity to 80%, migrate from FTP to streaming transport, and develop machine learning analysis of metrics.

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You are using Cloud CDN to deliver static HTTP(S) website content hosted on a Compute Engine instance group. You want to improve the cache hit ratio.
What should you do?

• A.Customize the cache keys to omit the protocol from the key.
• B.Shorten the expiration time of the cached objects.
• C.Make sure the HTTP(S) header "Cache-Region" points to the closest region of your users.
• D.Replicate the static content in a Cloud Storage bucket. Point CloudCDN toward a load balancer on that bucket.

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You are designing a mobile chat application. You want to ensure people cannot spoof chat messages, by providing a message were sent by a specific user.
What should you do

• A.Tag messages client side with the originating user identifier and the destination user.
• B.Use public key infrastructure (PKI) to encrypt the message client side using the originating user's private key.
• C.Use a trusted certificate authority to enable SSL connectivity between the client application and the server.
• D.Encrypt the message client side using block-based encryption with a shared key.

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Your development team has installed a new Linux kernel module on the batch servers in Google Compute Engine (GCE) virtual machines (VMs) to speed up the nightly batch process. Two days after the installation, 50% of the batch servers failed the nightly batch run. You want to collect details on the failure to pass back to the development team. Which three actions should you take? Choose 3 answers

• A.Use gcloud or Cloud Console to connect to the serial console and observe the logs.
• B.Export a debug VM into an image, and run the image on a local server where kernel log messages will be displayed on the native screen.
• C.Identify whether a live migration event of the failed server occurred, using in the activity log.
• D.Adjust the Google Stackdriver timeline to match the failure time, and observe the batch server metrics.
• E.Use Stackdriver Logging to search for the module log entries.
• F.Read the debug GCE Activity log using the API or Cloud Console.

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Your agricultural division is experimenting with fully autonomous vehicles. You want your architecture to promote strong security during vehicle operation.
Which two architectures should you consider? (Choose two.)

• A.Treat every micro service call between modules on the vehicle as untrusted.
• B.Use a functional programming language to isolate code execution cycles.
• C.Use a trusted platform module (TPM) and verify firmware and binaries on boot.
• D.Enclose the vehicle's drive electronics in a Faraday cage to isolate chips.
• E.Require IPv6 for connectivity to ensure a secure address space.
• F.Use multiple connectivity subsystems for redundancy.

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