CLF-C02 Cloud Technology and Services Practice Test 15 — 15 Questions

Question 1

Which AWS service enables you to run relational database workloads with up to 5x the throughput of standard MySQL and 3x the throughput of standard PostgreSQL at a lower price point than commercial databases?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Amazon Aurora. Amazon Aurora is a MySQL and PostgreSQL-compatible relational database built for the cloud, offering up to 5x the throughput of standard MySQL and 3x the throughput of standard PostgreSQL. It achieves this performance through a distributed, auto-healing storage subsystem that separates compute from storage, and it is priced lower than commercial databases like Oracle or SQL Server while providing high availability and durability.

Answer

Amazon RDS for MySQL

Answer

Amazon Redshift

Answer

Amazon DynamoDB

Question 2

A company needs to synchronize data in real time between its on-premises Oracle database and an Amazon RDS MySQL instance during a migration. Which AWS service handles ongoing data replication between heterogeneous databases?

Accepted Answer

AWS Database Migration Service (DMS). AWS Database Migration Service (DMS) is the correct choice because it supports ongoing replication (change data capture, CDC) from an on-premises Oracle database to an Amazon RDS MySQL instance, even when the source and target are heterogeneous database engines. DMS uses a replication instance to read the source database's transaction logs and apply changes in near real time to the target, making it ideal for continuous synchronization during a migration.

Answer

AWS DataSync

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AWS Snowball

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Amazon Kinesis Data Streams

Question 3

Which Amazon S3 storage class is most cost-effective for data that is accessed frequently?

Accepted Answer

S3 Standard. S3 Standard is the most cost-effective storage class for frequently accessed data because it offers low latency and high throughput with no retrieval costs or minimum storage duration charges. For data accessed often, the per-GB storage cost of S3 Standard is lower than the combined storage plus retrieval costs of infrequent access classes like S3 Standard-IA or One Zone-IA.

Answer

S3 Standard-IA

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S3 Glacier Instant Retrieval

Answer

S3 One Zone-IA

Question 4

A company archives compliance records that must be retained for 7 years but will almost never be accessed. They need the absolute lowest storage cost with retrieval times of several hours being acceptable. Which S3 storage class should they use?

Accepted Answer

S3 Glacier Deep Archive. S3 Glacier Deep Archive is designed for long-term retention of data that is accessed rarely, with retrieval times of 12 hours or more, making it the lowest-cost S3 storage class. For compliance records that must be retained for 7 years and almost never accessed, with acceptable retrieval times of several hours, this class provides the absolute minimum storage cost while meeting the retrieval time requirement.

Answer

S3 Glacier Instant Retrieval

Answer

S3 Standard-IA

Answer

S3 Glacier Flexible Retrieval

Question 5

Which AWS service automatically moves S3 objects between storage classes based on access patterns without requiring upfront knowledge of how frequently data will be accessed?

Accepted Answer

S3 Intelligent-Tiering. S3 Intelligent-Tiering is the correct answer because it is the only AWS service that automatically moves objects between storage classes based on changing access patterns, without requiring any upfront knowledge or lifecycle rules. It monitors access at the object level and moves data between two access tiers (frequent and infrequent) and an optional archive tier, charging a small monitoring fee but no retrieval costs.

Answer

S3 Lifecycle policies

Answer

S3 Standard-IA

Answer

S3 Replication

Question 6

A company wants to deploy a web application and have AWS handle the infrastructure, OS, and runtime — they only want to manage the application code and configuration. Which AWS service provides this experience?

Accepted Answer

AWS Elastic Beanstalk. AWS Elastic Beanstalk is a Platform as a Service (PaaS) offering that automatically handles the provisioning of underlying infrastructure (EC2 instances, load balancers, auto-scaling groups), the operating system, and the runtime environment (e.g., Java, Python, Node.js). The customer only needs to upload their application code and configuration, and Elastic Beanstalk manages the deployment, capacity provisioning, load balancing, and health monitoring, matching the requirement exactly.

Answer

Amazon EC2

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AWS Lambda

Answer

Amazon ECS

Question 7

Which AWS service provides a serverless, fully managed Apache Kafka-compatible data streaming service?

Accepted Answer

Amazon MSK (Managed Streaming for Apache Kafka). Amazon MSK (Managed Streaming for Apache Kafka) is the correct answer because it is a fully managed, serverless service that provides Apache Kafka-compatible data streaming. It handles cluster provisioning, scaling, and maintenance, allowing you to run Kafka workloads without managing infrastructure. This directly matches the question's requirement for a serverless, fully managed Apache Kafka-compatible service.

Answer

Amazon SQS

Answer

Amazon Kinesis Data Streams

Answer

AWS Step Functions

Question 8

A company wants to improve the performance of their global application by caching API responses closer to end users. Which AWS service provides an API proxy with built-in caching and CloudFront integration?

Accepted Answer

Amazon API Gateway. Amazon API Gateway is correct because it provides a fully managed API proxy that can cache responses at the API endpoint level, reducing latency and backend load. It also natively integrates with Amazon CloudFront, allowing cached API responses to be distributed globally via CloudFront's edge locations for even lower latency.

Answer

Amazon CloudFront alone

Answer

Elastic Load Balancing

Answer

AWS AppSync

Question 9

Which AWS service provides a fully managed workflow orchestration service that coordinates multiple AWS services into serverless workflows using visual state machines?

Accepted Answer

AWS Step Functions. AWS Step Functions is a fully managed orchestration service that allows you to coordinate multiple AWS services into serverless workflows using visual state machines. It enables you to define complex, multi-step processes as a series of states (tasks, choices, parallel branches) that execute in order, with built-in error handling and retry logic, making it the correct choice for workflow orchestration.

Answer

Amazon EventBridge

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Amazon SQS

Answer

AWS Batch

Question 10

Which AWS service provides a fully managed environment to run Apache Spark, Hadoop, and other big data frameworks for data processing and analytics?

Accepted Answer

Amazon EMR. Amazon EMR (Elastic MapReduce) is the correct answer because it is a fully managed big data platform that natively supports Apache Spark, Hadoop, Hive, Presto, and other distributed processing frameworks. It automatically provisions EC2 instances, configures the cluster, and handles scaling, patching, and monitoring, allowing you to run large-scale data processing and analytics workloads without manual infrastructure management.

Answer

Amazon Redshift

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Amazon Athena

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AWS Glue

Question 11

A company uses several AWS services and wants to create a unified monitoring dashboard to track metrics and set alarms. Which AWS service provides this capability?

Accepted Answer

Amazon CloudWatch. Amazon CloudWatch is AWS's native monitoring and observability service: it collects metrics from AWS resources and applications, supports custom metrics, and provides dashboards, alarms, and logs in one place. A unified dashboard tracking metrics and triggering alarms is exactly CloudWatch's core use case. CloudTrail, Config, and X-Ray serve auditing, compliance, and tracing respectively, not metric dashboards and alarms.

Answer

AWS CloudTrail

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AWS Config

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AWS X-Ray

Question 12

Which AWS service provides a fully managed extract, transform, and load (ETL) service that automatically discovers data schemas and generates ETL code?

Accepted Answer

AWS Glue. AWS Glue is a fully managed ETL service that automatically discovers data schemas using its crawler component and generates ETL code via its code generation engine. It integrates with the AWS Glue Data Catalog to store metadata and provides a serverless Spark environment to run ETL jobs without manual infrastructure management.

Answer

Amazon EMR

Answer

Amazon Kinesis Data Firehose

Answer

AWS Data Pipeline

Question 13

A company needs to provide business users with self-service business intelligence dashboards and visualizations of data from multiple AWS data sources. Which AWS service enables this?

Accepted Answer

Amazon QuickSight. Amazon QuickSight is a fully managed, serverless business intelligence (BI) service designed specifically for creating interactive dashboards and visualizations. It natively integrates with multiple AWS data sources (e.g., Amazon S3, Amazon RDS, Amazon Redshift, Amazon Athena) and provides self-service capabilities for business users via a web-based interface, without requiring any infrastructure management.

Answer

Amazon Athena

Answer

Amazon Redshift

Answer

Amazon EMR

Question 14

Which AWS service provides a fully managed virtual desktop infrastructure (VDI) that allows users to access Windows or Linux desktops from any device?

Accepted Answer

Amazon WorkSpaces. Amazon WorkSpaces is a fully managed, secure virtual desktop infrastructure (VDI) service that provisions either Windows or Linux desktops. Users can access their persistent desktops from any supported device (e.g., PC, Mac, iPad, Chromebook) using the WorkSpaces client application or a web browser, without needing to manage the underlying EC2 instances or operating system.

Answer

Amazon AppStream 2.0

Answer

AWS Client VPN

Answer

Amazon EC2 with Remote Desktop Protocol

Question 15

A developer wants to send real-time notifications to mobile app users when new content is available. Which AWS service enables push notifications to iOS and Android devices?

Accepted Answer

Amazon SNS. Amazon SNS (Simple Notification Service) is the correct choice because it provides a fully managed pub/sub messaging service that supports push notifications to mobile endpoints via platform application endpoints for iOS (APNs) and Android (FCM). It enables real-time delivery of messages directly to mobile apps without requiring polling or additional infrastructure.

Answer

Amazon SES

Answer

Amazon Pinpoint

Answer

AWS AppSync