AWS CLF-C02 Cloud Technology and Services Practice Questions

Free CLF-C02 Cloud Technology and Services practice test questions

8 questions from this domain with answers and explanations - different from the samples on the main AWS CLF-C02 page. Sign up free to practice the full set.

1. Question 1Cloud Technology and Services

   Which Amazon S3 storage class is most cost-effective for data that is rarely accessed but requires rapid access when needed?

   • AS3 Standard-Infrequent Access (S3 Standard-IA)Correct
   • BS3 Glacier Flexible Retrieval, for archives retrieved in minutes to hours
   • CS3 Standard, optimized for frequently accessed data with lowest latency
   • DS3 Glacier Deep Archive, the lowest-cost class for long-term retention
   ✓ Correct answer: A

   S3 Standard-IA is designed for data that is accessed infrequently but must be immediately available when retrieved - with no retrieval delay. It offers lower storage costs than S3 Standard in exchange for a per-GB retrieval fee, making it cost-effective for backups, disaster recovery files, and data accessed a few times a month.

   Why the other options are wrong

   • BS3 Glacier Flexible Retrieval is designed for archival data where retrieval times of minutes to hours are acceptable - it is not suitable when rapid (immediate) access is required.
   • CS3 Standard is optimized for frequently accessed data and provides the lowest latency and highest throughput, but it charges higher storage costs and is not the most cost-effective choice for rarely accessed data.
   • DS3 Glacier Deep Archive is the lowest-cost storage class but is designed for long-term retention where retrieval times of 12 hours or more are acceptable - not appropriate when rapid access is needed.
2. Question 2Cloud Technology and Services

   An operations team wants to be alerted and to automatically scale resources when CPU usage crosses a threshold. Which service enables this?

   • AAWS CloudTrail
   • BAWS Systems Manager
   • CAmazon CloudWatchCorrect
   • DAWS Config
   ✓ Correct answer: C

   Amazon CloudWatch monitors metrics such as CPU utilization and lets you set alarms that trigger actions when thresholds are crossed, including sending notifications or scaling an Auto Scaling group. This provides both visibility and automated reactions to changes in your environment. CloudTrail audits API calls, Config tracks configuration, and Systems Manager handles operational management tasks.

   Why the other options are wrong

   • ACloudTrail records API activity but does not trigger metric-based scaling.
   • BSystems Manager manages operations but relies on CloudWatch for metric alarms.
   • DAWS Config tracks configuration changes, not performance thresholds.
3. Question 3Cloud Technology and Services

   Which AWS service can automatically scale the number of Amazon EC2 instances in response to changing demand based on defined conditions?

   • AElastic Load Balancing
   • BAmazon CloudWatch
   • CAWS CloudFormation
   • DAmazon EC2 Auto ScalingCorrect
   ✓ Correct answer: D

   Amazon EC2 Auto Scaling automatically adjusts the number of EC2 instances based on demand metrics like CPU utilization. It maintains performance while optimizing costs.

   Why the other options are wrong

   • AElastic Load Balancing is incorrect because ELB distributes traffic but does not scale instances.
   • BAmazon CloudWatch is incorrect because CloudWatch monitors but does not adjust capacity.
   • CAWS CloudFormation is incorrect because CloudFormation provisions infrastructure but doesn't auto-scale.
4. Question 4Cloud Technology and Services

   Which service provides object storage with virtually unlimited capacity?

   • AEFS
   • BAmazon S3Correct
   • CFSx
   • DEBS
   ✓ Correct answer: B

   Amazon Simple Storage Service (S3) is an object storage service that automatically scales to store virtually unlimited amounts of data. Users store objects (files) in buckets, and AWS manages all underlying infrastructure. S3 is designed for 99.999999999% (11 nines) of durability and is accessible over the internet via standard HTTP APIs.

   Why the other options are wrong

   • AEFS (Elastic File System) is a managed NFS file system that scales automatically, but it is a file storage service (not object storage) and is primarily used for mounting shared file systems on EC2 instances.
   • CFSx provides managed file system options such as FSx for Windows File Server and FSx for Lustre - these are file storage services tailored to specific OS or high-performance computing use cases, not general-purpose object storage with unlimited capacity.
   • DEBS (Elastic Block Store) provides block storage volumes that are attached to individual EC2 instances - volumes have fixed sizes that must be provisioned explicitly, so storage is not virtually unlimited and it is not designed for object storage.
5. Question 5Cloud Technology and Services

   Which AWS service is a fully managed NoSQL database that provides single-digit millisecond performance at any scale?

   • AAmazon RDS
   • BAmazon Aurora
   • CAmazon DynamoDBCorrect
   • DAmazon Redshift
   ✓ Correct answer: C

   Amazon DynamoDB is the AWS fully managed NoSQL key-value and document database, delivering single-digit millisecond reads and writes that stay consistent as a table grows because data is partitioned across storage automatically. There is no cluster to size or patch: capacity is set per table as on-demand or provisioned, and features such as global tables for multi-Region replication, point-in-time recovery, and DynamoDB Accelerator for microsecond reads are configuration rather than infrastructure work.

   Why the other options are wrong

   • AAmazon RDS provides managed relational engines such as MySQL and PostgreSQL. It is fully managed but relational rather than NoSQL.
   • BAmazon Aurora is a high performance relational engine compatible with MySQL and PostgreSQL, so it also fails the NoSQL requirement.
   • DAmazon Redshift is a data warehouse for analytical queries over large datasets, where queries run in seconds rather than milliseconds.
6. Question 6Cloud Technology and Services

   Which AWS service allows you to create alarms that automatically perform actions when a metric threshold is exceeded, such as stopping or terminating an EC2 instance?

   • AAWS CloudTrail
   • BAmazon CloudWatch AlarmsCorrect
   • CAWS Config Rules
   • DAmazon SNS
   ✓ Correct answer: B

   A CloudWatch alarm watches a single metric or a metric math expression against a threshold over a number of periods and changes state to ALARM when the condition holds. Each state change can trigger actions: notify an SNS topic, execute an Auto Scaling policy, or invoke an EC2 action such as stop, terminate, reboot, or recover. The EC2 action is the one this question describes, and it is commonly used to stop idle development instances or recover an instance with impaired hardware.

   Why the other options are wrong

   • AAWS CloudTrail records API calls for auditing. It captures that an action occurred rather than triggering one from a metric threshold.
   • CAWS Config rules evaluate resource configuration for compliance and can trigger remediation, but they respond to configuration state rather than to performance metrics.
   • DAmazon SNS delivers notifications and is frequently the target of an alarm action, but it does not evaluate metrics or decide when to act.
7. Question 7Cloud Technology and Services

   A company needs to set up a hybrid cloud architecture and connect multiple VPCs and on-premises networks through a central hub. Which AWS service should they use?

   • AVPC Peering
   • BAWS Transit GatewayCorrect
   • CAWS Direct Connect
   • DInternet Gateway
   ✓ Correct answer: B

   AWS Transit Gateway acts as a regional network hub that simplifies connectivity by allowing thousands of VPCs and on-premises networks to connect through a single gateway. Rather than creating a full mesh of individual VPC peering connections, Transit Gateway uses a hub-and-spoke model that is far easier to manage and scale for hybrid cloud architectures.

   Why the other options are wrong

   • AVPC Peering connects exactly two VPCs in a direct one-to-one relationship; it does not scale to a hub-and-spoke model connecting many VPCs and on-premises networks through a central point.
   • CAWS Direct Connect provides a dedicated physical connection between an on-premises data center and AWS but does not act as a central hub for interconnecting multiple VPCs with each other.
   • DInternet Gateway connects a VPC to the public internet and is not designed for private inter-VPC or hybrid cloud hub-and-spoke connectivity.
8. Question 8Cloud Technology and Services

   A company runs a workload that cannot be interrupted and is predictable for the next three years. Which Amazon EC2 purchasing option offers the greatest cost savings for this steady-state usage?

   • AOn-Demand Instances
   • BSpot Instances
   • CReserved InstancesCorrect
   • DDedicated Hosts billed on demand
   ✓ Correct answer: C

   Reserved Instances (and Savings Plans) reward customers who commit to consistent compute usage over one or three years with discounts of up to roughly 72% versus On-Demand pricing. Because the workload here is steady and long-running, a three-year reservation maximizes savings without sacrificing capacity. On-Demand is more flexible but more expensive for always-on workloads.

   Why the other options are wrong

   • AOn-Demand Instances charge full pay-as-you-go rates with no commitment, so they cost more for predictable, always-on workloads.
   • BSpot Instances are cheapest but can be reclaimed by AWS with little notice, making them unsuitable for a workload that cannot be interrupted.
   • DDedicated Hosts billed on demand are used for licensing or compliance needs and are more expensive than Reserved Instances for ordinary steady workloads.

How Cloud Technology and Services is tested

This domain holds 282 of the 849 questions in the CLF-C02 bank, about 33%. The mix is 245 single-answer multiple choice, 34 multiple-response, 1 yes/no scenario, 1 ordering and 1 hotspot, so it is worth practising the formats as well as the content.

Once you have a few attempts recorded, CertGrid scores every domain separately and points you at the weakest one, so you can drill Cloud Technology and Services on its own rather than re-running full-length mocks.

Other CLF-C02 exam domains

• Cloud Concepts205 questions
• Security and Compliance257 questions
• Billing, Pricing, and Support105 questions
• All CLF-C02 practice questions849 total
• Cloud Technology and Services study notesKey concepts
• AWS practice examsAll AWS

CLF-C02 Cloud Technology and Services FAQ