10 CLF-C02 practice questions with answer reveals and spoken explanations. Choose before the reveal and keep your score.
Certification: AWS Certified Cloud Practitioner (CLF-C02). Independent practice, not an official exam.
How to use this round:
– Pause each question if you need more time to decide.
– Compare your answer after the reveal.
– Review the concepts you missed, then practice again.
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What you will practice
- What AWS service decouples application components so that they can run independently?
- Which service can be used to easily create multiple accounts?
- You have been running an on-demand Amazon EC2 instance running Linux for 4hrs, 5 minutes and 6 seconds. How m…
- How does Amazon EC2 Auto Scaling help with resiliency?
- It is important for users to have access to as many resources as they need. Also, the user needs the ability…
- How does the AWS global infrastructure offer high availability and fault tolerance to customers?
Answers and explanations
Tap a question to expand the answer and the exam reasoning. Try to commit to your own pick first.
Q1. What AWS service decouples application components so that they can run independently?
Answer: C. Amazon Simple Queue Service (Amazon SQS)
Amazon SQS is the classic decoupling service, letting producers and consumers operate independently through a managed queue. SNS could also loosely decouple components, but for the exam, queue-based decoupling with SQS is the expected answer.
Q2. Which service can be used to easily create multiple accounts?
Answer: D. AWS Organizations
AWS Organizations provides centralized management and automated creation of multiple AWS accounts through its API. IAM manages users and roles inside one account and cannot create accounts, making it the strongest wrong choice.
Q3. You have been running an on-demand Amazon EC2 instance running Linux for 4hrs, 5 minutes and 6 seconds. How much time will you be billed for?
Answer: B. 4hrs, 5mins, and 6 seconds
Linux EC2 instances on On-Demand, Reserved, and Spot models are billed per second after a one-minute minimum, so the exact runtime is charged. Watch for options that round up to the nearest minute or hour, which reflects the older billing model.
Q4. How does Amazon EC2 Auto Scaling help with resiliency?
Answer: B. By launching and terminating instances as needed
EC2 Auto Scaling adds capacity by launching instances when demand rises and terminates them when it falls, maintaining availability. Distributing connections is the load balancer's job, and instance types are not changed automatically.
Q5. It is important for users to have access to as many resources as they need. Also, the user needs the ability to scale up and down quickly. These capabilities are described by which AWS Cloud benefit?
Answer: D. Elasticity
Elasticity means acquiring resources when needed and releasing them when not, which enables quick scaling up and down. Pay-as-you-go is about the billing model, not the ability to scale capacity rapidly.
Q6. How does the AWS global infrastructure offer high availability and fault tolerance to customers?
Answer: A. The AWS infrastructure consists of isolated AWS Regions with independent Availability Zones that are connected with low-latency networking and redundant power supplies.
Regions contain multiple isolated Availability Zones, each with redundant power and low-latency networking, giving high availability and fault tolerance. Remember Regions contain AZs, never the reverse, which eliminates option C.
Q7. What are the benefits of using reserved instances? (Select TWO.)
Answer: B,C. Reserve capacity || Reduced cost
Reserved Instances provide a discount for a 1- or 3-year commitment and can reserve capacity in a specific Availability Zone. Don't confuse them with Dedicated Hosts; Reserved Instances are a pricing model, not dedicated hardware.
Q8. What is a benefit of moving an on-premises database to Amazon Relational Database Service (RDS)?
Answer: C. There is no need to manage operating systems
Amazon RDS is a managed service, so AWS handles the operating system, patching, and backups. Remember that RDS still requires some database administration and only supports specific engines, not any database.
Q9. AWS Direct Connect is used by a company that wants to establish connectivity across multiple AWS Regions using VPCs. Which AWS service or feature should the company use to meet these requirements?
Answer: B. AWS Transit Gateway
AWS Transit Gateway acts as a central hub that connects VPCs and on-premises networks, including inter-Region peering across the AWS global network. PrivateLink provides private connectivity but does not connect VPCs across multiple Regions.
Q10. To gain greater discounts, which services can be reserved? (Select TWO.)
Answer: A,E. Amazon RedShift || Amazon DynamoDB
Amazon Redshift and DynamoDB both offer reserved capacity for significant discounts, alongside EC2, RDS, and ElastiCache. Exam cue: only compute or capacity-based services can be reserved; S3, Lambda, and CloudWatch are pure pay-as-you-go.
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