CompTIA Cloud+ Cheat Sheet 2026

The 30 highest-yield CompTIA Cloud+ facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the CIDR notation for a subnet that provides exactly 254 usable host addresses? → /24
2. What is the primary purpose of a cloud architecture diagram? → To visualize the components and relationships within a cloud environment
3. Which routing protocol is standard for exchanging routes between autonomous systems in hybrid cloud and internet environments? → BGP
4. Which storage architecture is best suited for applications requiring high scalability and fault tolerance? → Object Storage
5. What is a common method for securing data in transit? → Transport Layer Security (TLS) encryption
6. A company needs to distribute incoming web traffic across multiple cloud instances for high availability. Which service should they deploy? → Load Balancer
7. What tool is most commonly used to analyze cloud network traffic? → Packet capture tools
8. In a multi-cloud architecture, what is the main benefit of using multiple cloud providers? → Mitigation of vendor lock-in and increased redundancy
9. What is a common first step in troubleshooting a cloud application issue? → Reviewing application logs
10. What is the primary purpose of a Virtual Private Cloud (VPC)? → To provide a logically isolated network environment in the cloud
11. How can auto-scaling improve cloud operations? → By adding or removing resources based on demand
12. What is a key advantage of a microservices architecture in cloud environments? → Easier scaling and deployment of individual components
13. Which issue is indicated by a sudden spike in CPU usage across multiple virtual machines? → A distributed denial-of-service (DDoS) attack
14. Which of the following is an example of data at rest? → Data stored in a database on a cloud server
15. Which metric is MOST important to monitor for evaluating the health and performance of a cloud load balancer? → Target response time and request error rate
16. Which of the following cloud architecture principles is MOST directly aimed at achieving fault tolerance by eliminating single points of failure? → Deploying redundant components across multiple availability zones
17. A cloud architect needs to connect multiple VPCs and on-premises networks using a hub-and-spoke topology. Which service best supports this design? → Transit Gateway
18. Which cloud networking feature allows two VPCs to communicate using private IP addresses without traffic traversing the public internet? → VPC Peering
19. If users report slow performance in a cloud application, what should you check first? → Network latency and bandwidth usage
20. What is the likely cause if a cloud-based database stops responding during a query? → Lock contention or deadlock in the database
21. What is the purpose of a NAT Gateway in a cloud VPC? → To allow private subnet instances to reach the internet without exposing them publicly
22. Which type of subnet in a VPC allows instances to communicate directly with the internet? → Public subnet
23. What is the first step in troubleshooting a cloud connectivity issue? → Verifying network settings and configurations
24. What is the purpose of cloud monitoring tools? → To track and report the performance and availability of cloud resources
25. Which of the following best describes data encryption? → The practice of converting data into an unreadable format to prevent unauthorized access
26. What is the main purpose of a Service-Level Agreement (SLA) in cloud environments? → To outline the responsibilities and performance guarantees of the cloud provider
27. What is the primary purpose of a cloud access control policy? → To define who can access cloud resources and at what level
28. In cloud networking terminology, what does 'east-west traffic' refer to? → Lateral traffic flowing between servers or services within the same cloud environment
29. Which metric is most important for evaluating cloud resource performance? → Resource utilization
30. What is the key difference between a Security Group and a Network ACL (NACL) in cloud networking? → Security Groups are stateful, while NACLs are stateless