Your development team has created a new version of their service's API. You need to deploy the new versions of the API with the least disruption to third-party developers and end users of third-party installed applications. What should you do?

• A.Introduce the new version of the API.
  Contact remaining users of the old API.
  Announce deprecation of the old version of the API.
  Deprecate the old version of the API.
  Turn down the old version of the API.
  Provide best effort support to users of the old API.
• B.Announce deprecation of the old version of the API.
  Introduce the new version of the API.
  Contact remaining users on the old API.
  Deprecate the old version of the API.
  Turn down the old version of the API.
  Provide best effort support to users of the old API.
• C.Introduce the new version of the API.
  Announce deprecation of the old version of the API.
  Deprecate the old version of the API.
  Contact remaining users of the old API.
  Provide best effort support to users of the old API.
  Turn down the old version of the API.
• D.Announce deprecation of the old version of the API.
  Contact remaining users on the old API.
  Introduce the new version of the API.
  Deprecate the old version of the API.
  Provide best effort support to users of the old API.
  Turn down the old version of the API.

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You support a large service with a well-defined Service Level Objective (SLO). The development team deploys new releases of the service multiple times a week. If a major incident causes the service to miss its SLO, you want the development team to shift its focus from working on features to improving service reliability. What should you do before a major incident occurs?

• A.Develop an appropriate error budget policy in cooperation with all service stakeholders.
• B.Negotiate with the product team to always prioritize service reliability over releasing new features.
• C.Negotiate with the development team to reduce the release frequency to no more than once a week.
• D.Add a plugin to your Jenkins pipeline that prevents new releases whenever your service is out of SLO.

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Your product is currently deployed in three Google Cloud Platform (GCP) zones with your users divided between the zones. You can fail over from one zone to another, but it causes a 10-minute service disruption for the affected users. You typically experience a database failure once per quarter and can detect it within five minutes. You are cataloging the reliability risks of a new real-time chat feature for your product. You catalog the following information for each risk:
* Mean Time to Detect (MUD} in minutes
* Mean Time to Repair (MTTR) in minutes
* Mean Time Between Failure (MTBF) in days
* User Impact Percentage
The chat feature requires a new database system that takes twice as long to successfully fail over between zones. You want to account for the risk of the new database failing in one zone. What would be the values for the risk of database failover with the new system?

• A.MTTD: 5
  MTTR: 10
  MTBF: 90
  Impact: 33%
• B.MTTD:5
  MTTR: 20
  MTBF: 90
  Impact: 33%
• C.MTTD:5
  MTTR: 10
  MTBF: 90
  Impact 50%
• D.MTTD:5
  MTTR: 20
  MTBF: 90
  Impact: 50%

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You need to define SLOs for a high-traffic web application. Customers are currently happy with the application performance and availability. Based on current measurement, the 90th percentile Of latency is 160 ms and the 95th percentile of latency is 300 ms over a 28-day window. What latency SLO should you publish?

• A.90th percentile - 150 ms
  95th percentile - 290 ms
• B.90th percentile - 160 ms
  95th percentile - 300 ms
• C.90th percentile - 190 ms
  95th percentile - 330 ms
• D.90th percentile - 300 ms
  95th percentile - 450 ms

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Your company follows Site Reliability Engineering practices. You are the Incident Commander for a new. customer-impacting incident. You need to immediately assign two incident management roles to assist you in an effective incident response. What roles should you assign?
Choose 2 answers

• A.Operations Lead
• B.Engineering Lead
• C.Communications Lead
• D.Customer Impact Assessor
• E.External Customer Communications Lead

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