Google Cloud Certified High Availability and Disaster Recovery 1 — Questions and Answers
Question 1: What is the Recovery Time Objective (RTO) in the context of disaster recovery planning?
- The maximum acceptable amount of data loss measured in time
- The maximum acceptable time to restore service after a disaster (Correct answer)
- The minimum number of replicas required for redundancy
- The time interval between backups
Correct answer: The maximum acceptable time to restore service after a disaster
RTO defines the maximum tolerable downtime — how quickly the service must be restored after a disaster occurs.
Question 2: Which Cloud SQL feature provides automatic failover to a standby replica in case of a primary instance failure?
- Cross-region Read Replica
- High Availability (HA) with failover replica (Correct answer)
- Cloud SQL Backups
- Point-in-time recovery
Correct answer: High Availability (HA) with failover replica
Cloud SQL High Availability creates a synchronous standby replica in the same region that automatically takes over if the primary fails.
Question 3: An application requires a 99.99% availability SLA and must serve users across multiple GCP regions. Which load balancing configuration achieves this?
- Regional Internal TCP/UDP Load Balancer
- Global External HTTP(S) Load Balancer with multi-region backends (Correct answer)
- Regional External HTTP(S) Load Balancer
- Classic external TCP Load Balancer
Correct answer: Global External HTTP(S) Load Balancer with multi-region backends
A Global External HTTP(S) Load Balancer with multi-region backend services provides the highest availability by routing to the nearest healthy region.
Question 4: What is a key characteristic of a Warm Standby disaster recovery strategy?
- The standby environment is identical to production and always running at full capacity
- A scaled-down version of the environment runs continuously and can scale up quickly (Correct answer)
- The environment is created only after a disaster is declared
- Backups are replicated but no compute runs in the DR region
Correct answer: A scaled-down version of the environment runs continuously and can scale up quickly
Warm Standby keeps a reduced-capacity version of the environment running, allowing faster recovery than a cold standby but at lower cost than hot standby.
Question 5: Which GCP feature allows you to create scheduled, automated snapshots of Persistent Disks for backup?
- Managed Instance Group autohealing
- Snapshot Schedules (Correct answer)
- Cloud Backup and DR service
- Disk cloning
Correct answer: Snapshot Schedules
Snapshot Schedules in Compute Engine automate the creation and retention of Persistent Disk snapshots on a defined schedule.
Question 6: Which Cloud Spanner configuration provides the highest level of availability and global disaster recovery?
- Regional instance
- Multi-region instance (Correct answer)
- Single-zone instance
- Replicated instance
Correct answer: Multi-region instance
Cloud Spanner multi-region instances replicate data synchronously across multiple regions, providing 99.999% availability and regional DR.
Google Cloud Certified High Availability and Disaster Recovery 1
What is the Recovery Time Objective (RTO) in the context of disaster recovery planning?