Cloud+ High Availability Architecture Patterns Quiz

1. Which replication strategy provides the lowest latency for read operations?

Master-slave replication

Multi-master replication

Local read replicas

Eventual consistency only

2. Which cloud region strategy best supports high availability across geographic locations?

Multi-region deployment with failover mechanisms

Single region deployment

All resources in one availability zone

No geographic distribution needed

3. What is a split-brain scenario in distributed systems?

Network partition causing multiple nodes to think they're the primary

A server running out of memory

Unequal load distribution

Database corruption

4. How does auto-scaling improve high availability in cloud environments?

Automatically adds resources when demand increases preventing overload

Reduces security requirements

Eliminates the need for backups

Removes the need for monitoring

5. What is the purpose of a heartbeat mechanism in failover systems?

Detecting when primary node becomes unavailable

Encrypting network communications

Balancing network traffic

Monitoring user sessions

6. Which approach minimizes data loss in a high availability system?

Synchronous replication with multiple copies

Single backup once per day

No replication needed

Manual backup processes

7. In cloud architecture, what does multi-tenancy affect regarding high availability?

Isolation between tenants improves overall system resilience

One tenant's failure can impact others if not properly isolated

Eliminates the need for redundancy

Guarantees 100% uptime automatically

8. What is health checking primarily used for in load balancing?

Detecting failed servers and removing them from rotation

Encrypting data in transit

Monitoring user behavior

Optimizing database queries

9. How does database sharding contribute to system availability?

Distributes data across multiple servers reducing single-server bottlenecks

Encrypts sensitive data

Automatically backs up databases

Eliminates the need for replication

10. What does RPO mean in the context of disaster recovery?

Recovery Point Objective

Redundancy Performance Optimization

Replication Protocol Option

Real-time Processing Operation

11. Which architecture pattern uses multiple independent systems to ensure service continuity if one fails?

Active-Active redundancy

Single point of failure

Monolithic design

Centralized processing

12. What is a circuit breaker pattern used for in distributed systems?

Preventing cascading failures by stopping calls to failing services

Encrypting network traffic

Balancing loads across regions

Backing up data automatically

13. In a microservices architecture, how does service isolation improve high availability?

One service failure doesn't cascade to others

All services share the same database

Services cannot communicate

Eliminates the need for monitoring

14. What is the main advantage of using a Content Delivery Network (CDN) for high availability?

Reduces latency by serving content from edge locations

Eliminates the need for backups

Encrypts all user data

Automatically scales databases

15. Which pattern involves replicating data across geographically dispersed data centers?

Local caching

Geo-redundancy

Session affinity

Rate limiting

16. A system with 99.99% uptime translates to approximately how much downtime per year?

52 minutes

8.7 hours

1 day

7 days

17. What does RTO stand for in disaster recovery planning?

Recovery Time Objective

Redundancy Target Operation

Real-Time Optimization

Replication Transfer Option

18. Which cloud service model provides the most control over high availability configuration?

SaaS

PaaS

IaaS

FaaS

19. In an Active-Passive failover configuration, what is the standby node doing?

Actively processing requests

Waiting to take over if primary fails

Load balancing traffic

Backing up databases only

20. What is the primary purpose of a load balancer in a high availability architecture?

Distribute traffic across multiple servers

Encrypt all data in transit

Manage database backups

Monitor security threats