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. A free account includes a fixed set of 20 questions for this exam; paid access unlocks the full bank.

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

   • AS3 Standard for frequently accessed data
   • BS3 Standard-Infrequent Access (S3 Standard-IA)Correct
   • CS3 Glacier Deep Archive for cold archives
   • DS3 One Zone-Infrequent Access in a single AZ tier
   ✓ Correct answer: B

   S3 Standard-IA is designed for data that is accessed infrequently but must be available immediately when needed, with retrieval in milliseconds. It charges a lower per-GB storage price than S3 Standard (with a small per-GB retrieval fee) while keeping 11 nines of durability and resilience across multiple Availability Zones, making it the best fit for rarely accessed data that still requires fast access.

   Why the other options are wrong

   • AS3 Standard offers immediate access but is the most expensive storage class and is intended for frequently accessed data, so it is not cost-effective for rarely accessed data.
   • CS3 Glacier Deep Archive is the lowest-cost archival class, but retrieval takes hours (typically 12-48), which does not meet the rapid-access requirement.
   • DS3 One Zone-IA is cheaper per GB but stores data in a single Availability Zone, sacrificing multi-AZ resilience; Standard-IA is the standard answer when durability across AZs is expected for this use case.
6. Question 6Cloud Technology and Services

   A company wants to run a managed Apache Hadoop or Apache Spark cluster on AWS for big data processing. Which service should they use?

   • AAmazon Kinesis
   • BAmazon EMRCorrect
   • CAmazon Redshift
   • DAWS Glue
   ✓ Correct answer: B

   Amazon EMR is the managed big data platform for open source frameworks including Apache Spark, Hadoop, Hive, Presto, and HBase. AWS provisions and configures the cluster, handles node failures, and lets you scale it up or down, while you keep the standard framework APIs and can run existing Spark or Hive jobs unchanged. Clusters commonly read directly from Amazon S3 and can be transient, spun up for one job and terminated afterwards so nothing is paid for between runs.

   Why the other options are wrong

   • AAmazon Kinesis ingests and processes streaming data. It handles records in motion rather than running a Hadoop or Spark cluster.
   • CAmazon Redshift is a data warehouse queried with SQL. It analyses large datasets but does not run arbitrary Spark or Hadoop jobs.
   • DAWS Glue is serverless ETL that runs Spark jobs, but it deliberately hides the cluster; a company asking for a managed Hadoop or Spark cluster wants EMR.
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 281 of the 848 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 questions848 total
• Cloud Technology and Services study notesKey concepts
• AWS practice examsAll AWS

CLF-C02 Cloud Technology and Services FAQ