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AWS Certified Cloud Practitioner Cloud Technology and Services Summary

Checked 11/2/26

Cloud Technology and Services: key points

  • A Region contains multiple isolated Availability Zones.
  • Amazon S3 is object storage; Amazon EBS is block storage for one EC2 instance.
Importance
★★★★★ (5 / 5)
Weight
About 22 of 65 Cloud Practitioner (CLF-C02) questions (34%)

Ways to deploy and operate in AWS, the global infrastructure of Regions, Availability Zones, and edge locations, and the main compute, database, network, storage, AI/ML, and analytics services.

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Cloud Technology and Services: 10 sample questions

Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 1. What is an Availability Zone?

  1. ① A site that caches content close to users for Amazon CloudFront
  2. ② A single rack of servers rented to one customer
  3. ③ One or more separate data centers with their own power and networking, inside a Region
  4. ④ A separate geographic area of the world that contains several data centers
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Answer: ③ One or more separate data centers with their own power and networking, inside a Region

Key point: Region > Availability Zones (isolated data centers)

An Availability Zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity. Each Region has multiple AZs that are isolated from each other.

Wrong choices

  • A separate geographic area of the world that contains several data centers: That describes a Region, which contains several Availability Zones.
  • A site that caches content close to users for Amazon CloudFront: That describes an edge location.
  • A single rack of servers rented to one customer: Availability Zones are much larger and are shared by many customers.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 2. A video website wants to cache its images and videos close to viewers around the world so pages load faster. Which service should it use?

  1. ① Amazon S3 Glacier
  2. ② Amazon Route 53
  3. ③ AWS Direct Connect
  4. ④ Amazon CloudFront
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Answer: ④ Amazon CloudFront

Key point: Cache content at edge locations = CloudFront

Amazon CloudFront is a content delivery network (CDN). It caches content at edge locations near users so it is delivered with low delay.

Wrong choices

  • Amazon Route 53: Route 53 is a DNS service; it does not cache content.
  • AWS Direct Connect: Direct Connect links a data center to AWS with a private connection.
  • Amazon S3 Glacier: S3 Glacier storage classes are for long-term archives.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 3. A company needs virtual servers in the cloud where it can choose the operating system and install its own software. Which service should it use?

  1. ① AWS Lambda
  2. ② Amazon S3
  3. ③ Amazon RDS
  4. ④ Amazon EC2
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Answer: ④ Amazon EC2

Key point: Virtual servers = EC2

Amazon EC2 provides resizable virtual servers (instances). You choose the instance type and operating system and control the software.

Wrong choices

  • AWS Lambda: Lambda runs code without servers you manage, so you cannot choose and manage the operating system.
  • Amazon S3: S3 stores objects; it does not run servers.
  • Amazon RDS: RDS is a managed relational database.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 4. A company wants to run a small piece of code each time a file is uploaded, without managing any servers, and pay only when the code runs. Which service should it use?

  1. ① Amazon EC2
  2. ② AWS Lambda
  3. ③ Amazon Lightsail
  4. ④ AWS Elastic Beanstalk
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Answer: ② AWS Lambda

Key point: Event-driven code, no servers = Lambda

AWS Lambda is serverless compute. It runs your code in response to events and you pay only for the compute time used.

Wrong choices

  • Amazon EC2: EC2 needs you to run and manage servers, and you pay while they run.
  • AWS Elastic Beanstalk: Elastic Beanstalk deploys applications onto servers it manages for you, not event-driven code.
  • Amazon Lightsail: Lightsail provides simple virtual servers.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 5. A company needs to store a very large and growing number of photos and documents and get them over the internet. Which service is the best fit?

  1. ① Amazon EBS
  2. ② Amazon RDS
  3. ③ Amazon EFS
  4. ④ Amazon S3
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Answer: ④ Amazon S3

Key point: Object storage for files of any amount = S3

Amazon S3 is object storage. It stores any amount of data as objects in buckets and is designed for very high durability.

Wrong choices

  • Amazon EBS: EBS is block storage attached to EC2 instances, not internet-accessible object storage.
  • Amazon EFS: EFS is a shared file system for servers.
  • Amazon RDS: RDS stores data in relational database tables.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 6. An Amazon EC2 instance needs a storage volume that works like a hard drive for its operating system and database. Which service provides this?

  1. ① Amazon EBS
  2. ② Amazon S3
  3. ③ Amazon S3 Glacier Deep Archive
  4. ④ Amazon EFS
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Answer: ① Amazon EBS

Key point: Block storage volume for EC2 = EBS

Amazon EBS provides block storage volumes that attach to EC2 instances and act like hard drives. Data stays on the volume when the instance stops.

Wrong choices

  • Amazon S3: S3 is object storage, not a disk drive attached to an instance.
  • Amazon EFS: EFS is a shared file system, not a block volume for one instance.
  • Amazon S3 Glacier Deep Archive: This is for long-term archive storage.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 7. A company wants a relational database such as MySQL or PostgreSQL, but it does not want to handle backups and patching itself. Which service should it use?

  1. ① Amazon ElastiCache
  2. ② Amazon RDS
  3. ③ Amazon Redshift
  4. ④ Amazon DynamoDB
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Answer: ② Amazon RDS

Key point: Managed relational database = RDS

Amazon RDS is a managed relational database service. It supports engines such as MySQL and PostgreSQL and handles tasks like backups and patching.

Wrong choices

  • Amazon DynamoDB: DynamoDB is a NoSQL database, not MySQL or PostgreSQL.
  • Amazon Redshift: Redshift is a data warehouse for analytics.
  • Amazon ElastiCache: ElastiCache is an in-memory cache.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 8. A mobile game needs a serverless NoSQL database that gives fast responses at any scale. Which service fits best?

  1. ① Amazon RDS
  2. ② Amazon Redshift
  3. ③ Amazon DynamoDB
  4. ④ Amazon Aurora
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Answer: ③ Amazon DynamoDB

Key point: Serverless NoSQL key-value = DynamoDB

Amazon DynamoDB is a fully managed, serverless NoSQL key-value and document database with fast performance at any scale.

Wrong choices

  • Amazon RDS: RDS is relational and runs on database instances you size.
  • Amazon Aurora: Aurora is a relational database.
  • Amazon Redshift: Redshift is a data warehouse.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 9. A company wants a private, dedicated network connection from its own data center to AWS that does not travel over the public internet. Which service should it use?

  1. ① AWS Direct Connect
  2. ② AWS Site-to-Site VPN
  3. ③ Amazon CloudFront
  4. ④ Amazon Route 53
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Answer: ① AWS Direct Connect

Key point: Private dedicated link to AWS = Direct Connect

AWS Direct Connect creates a dedicated private network connection between your location and AWS, which can give more consistent performance than the internet.

Wrong choices

  • AWS Site-to-Site VPN: Site-to-Site VPN is encrypted but travels over the public internet.
  • Amazon CloudFront: CloudFront delivers content to users.
  • Amazon Route 53: Route 53 is a DNS service.
Practice questionReviewedCloud Practitioner (CLF-C02) › Cloud Technology and Services★★★★★

Question 10. Which service lets a company create its own logically isolated network in AWS, with its own IP address ranges and subnets?

  1. ① Amazon Route 53
  2. ② Amazon CloudFront
  3. ③ AWS Direct Connect
  4. ④ Amazon VPC
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Answer: ④ Amazon VPC

Key point: Your private network in AWS = VPC

Amazon Virtual Private Cloud (VPC) lets you define a logically isolated network, with subnets, route tables, and gateways that you control.

Wrong choices

  • AWS Direct Connect: Direct Connect connects a data center to AWS but is not the network itself.
  • Amazon Route 53: Route 53 is a DNS service.
  • Amazon CloudFront: CloudFront delivers content to users.

Test yourself.

Cloud Technology and Services: 5 questions →Cloud Practitioner (CLF-C02): 5 questions →

Written by AI · Not yet reviewed by staff