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AWS Cloud Practitioner Cloud Technology and Services: 381 practice questions

AWS Cloud Practitioner 381 questions 12 shown free

12 of the 381 Cloud Technology and Services questions in the Certsqill AWS Cloud Practitioner bank, shown in full below. Each one carries an explanation for every option, not just the correct one — the wrong answers are where the marks go.

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1. Amazon Redshift: Which service is most appropriate?

Medium
An IT procurement team needs a service designed to analyze large datasets using a data warehouse rather than operate an application’s transactional database. Which service is most appropriate?
  1. Amazon Redshift ✓
    Redshift supports data warehousing analytics, making it appropriate for analyzing large datasets.
  2. Amazon RDS
    RDS provides managed relational databases, but its primary purpose is not analytical data warehousing.
  3. Amazon ElastiCache
    ElastiCache accelerates access through in-memory caching and does not provide the requested analytical warehouse.
  4. Amazon DynamoDB
    DynamoDB provides managed NoSQL key-value and document storage, not the requested warehouse analytics capability.
The trap
Confuses transactional relational databases with analytical warehousing. Confuses operational NoSQL storage with warehouse analytics. Confuses cached application data with warehouse analysis.

Redshift is AWS’s analytical data warehousing service for analyzing large datasets.

2. Managing the database software: Which responsibility remains with the customer because EC2 provides more opera

Medium
An enterprise operations team hosts a database on Amazon EC2. Which responsibility remains with the customer because EC2 provides more operating-system control?
  1. Managing the database software ✓
    With a database on EC2, the customer manages the database software and more of its operating environment.
  2. Using ElastiCache as a database engine
    ElastiCache is an in-memory caching service, so it does not replace customer database software management on EC2.
  3. Running Redshift warehouse analytics
    Redshift is a separate managed warehouse service and is unrelated to the customer’s EC2 database responsibility.
  4. Choosing a DynamoDB partition key
    DynamoDB partition-key design applies to DynamoDB workloads, not database software hosted on an EC2 instance.
The trap
Applies a DynamoDB design task to an EC2-hosted database. Confuses caching with database engine administration. Confuses an independent analytics service with EC2 operating responsibilities.

Hosting a database on EC2 gives control but leaves the customer responsible for managing database software.

3. AWS Database Migration Service: Which service is the best match?

Easy
A logistics provider wants to move a supported source database to AWS while using a service designed for database migration and replication. Which service is the best match?
  1. AWS Database Migration Service ✓
    AWS DMS supports database migration and replication for supported endpoints.
  2. Amazon RDS
    RDS hosts managed relational databases, but it is not the migration and replication service requested.
  3. Amazon Redshift
    Redshift is an analytical warehouse, not the general-purpose database migration service described.
  4. Amazon ElastiCache
    ElastiCache provides in-memory caching, not database migration or replication between supported endpoints.
The trap
Confuses performance caching with database movement. Confuses an analytics platform with migration tooling. Confuses a managed database destination with migration tooling.

AWS Database Migration Service is designed for supported database migration and replication.

4. AWS DMS Schema Conversion: Which capability should it use to help convert the schema before migration?

Medium
A logistics provider is moving between database engines with incompatible schemas. Which capability should it use to help convert the schema before migration?
  1. AWS DMS Schema Conversion ✓
    AWS DMS Schema Conversion addresses incompatible database schemas when moving between different database engines.
  2. AWS Database Migration Service
    AWS DMS moves and replicates data, while schema conversion addresses structural differences between database engines.
  3. Amazon RDS
    RDS provides managed relational databases but does not primarily perform schema conversion between incompatible engines.
  4. Amazon ElastiCache
    ElastiCache accelerates reads with in-memory caching and does not convert database schemas between engines.
The trap
Confuses caching with schema conversion. Confuses the database hosting destination with conversion capability. Confuses data movement with conversion of incompatible schemas.

AWS DMS Schema Conversion helps address incompatible schemas when changing database engines.

5. Multi-AZ DB instance: Which capability matches?

Hard
A finance department uses a classic Amazon RDS Multi-AZ DB instance and needs standby support for availability rather than additional read capacity. Which capability matches?
  1. Amazon Redshift data warehouse
    Amazon Redshift supports analytical warehousing and does not provide the requested RDS standby capability.
  2. Read replica
    A read replica provides a readable copy primarily for read scaling, not classic standby failover support.
  3. Multi-AZ DB instance ✓
    A classic Multi-AZ DB instance maintains standby support for availability and failover, not read scaling.
  4. Amazon ElastiCache
    Amazon ElastiCache provides in-memory caching and does not provide an RDS database standby.
The trap
Confuses read scaling with standby availability. Confuses caching with database availability. Confuses analytics with relational database failover.

A classic Multi-AZ DB instance provides standby support for availability, while a read replica primarily supports read scaling.

6. Amazon RDS manages relational database infrastructure: Which statement is the strongest support?

Medium
A small software team wants a managed relational database so it can reduce responsibility for database infrastructure while retaining relational database capabilities. Which statement is the strongest support?
  1. Amazon EC2 provides virtual servers with greater operating-system control.
    EC2 provides control, but hosting the database there leaves the team with more infrastructure responsibility.
  2. Amazon ElastiCache provides in-memory caching for repeated reads.
    ElastiCache can reduce read latency, but it is not the team’s managed relational database service.
  3. Amazon DynamoDB provides a managed key-value and document database.
    DynamoDB is managed, but its primary NoSQL model does not satisfy the team’s relational database requirement.
  4. Amazon RDS manages relational database infrastructure for the team. ✓
    RDS manages relational database infrastructure, directly supporting the team’s goal of reducing operational responsibility.
The trap
Treats managed operation as sufficient while overlooking the required relational model. Confuses a performance optimization with the required primary database. Confuses infrastructure control with reduced database management responsibility.

Amazon RDS directly combines relational database capability with managed database infrastructure.

7. Amazon Aurora: Which option is most relevant?

Medium
An education startup has a MySQL-compatible application and specifically wants the Aurora MySQL-compatible relational database engine as a managed AWS service. Which option is most relevant?
  1. Amazon RDS for MySQL
    RDS for MySQL manages standard MySQL database deployments, but it is not the Aurora MySQL-compatible engine specified in the requirement.
  2. Amazon DynamoDB
    DynamoDB is a managed NoSQL key-value and document database, not a relational MySQL-compatible engine.
  3. Amazon Aurora ✓
    Aurora is a managed relational database compatible with supported MySQL interfaces, matching the specified Aurora engine requirement.
  4. Amazon Redshift
    Redshift is designed primarily for analytical data warehousing rather than transactional relational application workloads.
The trap
Confuses the broader RDS service and a standard MySQL deployment with the Aurora engine. Selects a managed database without matching the relational requirement. Confuses analytical warehousing with an application database.

Amazon Aurora provides a managed relational database compatible with supported MySQL interfaces.

8. ElastiCache: Which service is most relevant?

Medium
A manufacturing company repeatedly reads the same operational values and wants lower-latency access without treating the cache as its primary database. Which service is most relevant?
  1. ElastiCache ✓
    ElastiCache provides in-memory caching that can accelerate repeated reads of frequently accessed values.
  2. Amazon RDS
    Amazon RDS provides managed relational databases, but it is not primarily an in-memory caching service.
  3. Amazon DynamoDB
    DynamoDB provides managed NoSQL storage, but the requirement specifically emphasizes an in-memory caching layer.
  4. Amazon Redshift
    Amazon Redshift supports analytical warehousing and is not primarily designed for repeated low-latency application reads.
The trap
Chooses a database service instead of the service specifically intended for repeated cached reads. Confuses fast managed database storage with a dedicated cache. Selects an analytics warehouse for an operational read-acceleration need.

ElastiCache is the most relevant service because its primary purpose is in-memory caching for frequently repeated reads.

9. Amazon Redshift: Which service should it consider?

Easy
An IT procurement team needs a managed service primarily designed to analyze large datasets using data warehousing workloads. Which service should it consider?
  1. Amazon RDS
    Amazon RDS primarily manages relational databases for application workloads rather than analytical data warehousing.
  2. Amazon Redshift ✓
    Amazon Redshift is designed primarily for data warehousing and analytics across large datasets.
  3. Amazon DynamoDB
    DynamoDB primarily provides NoSQL key-value and document storage, not data warehouse analytics.
  4. ElastiCache
    ElastiCache primarily provides in-memory caching and is not a service for warehouse-based dataset analysis.
The trap
Confuses general relational database management with a specialized analytical warehouse. Chooses a scalable database without matching the analytical warehouse requirement. Confuses fast cached access with analytical processing.

Amazon Redshift is the appropriate choice because its primary purpose is analytical data warehousing over large datasets.

10. Manage the database operating system: Which responsibility remains with the customer?

Easy
A travel service hosts its database on an EC2 instance. Which responsibility remains with the customer?
  1. Use AWS Database Migration Service to move data.
    AWS DMS supports database migration and replication, but migration is not the ongoing operating responsibility described.
  2. Use Amazon Aurora as the relational engine.
    Aurora is a possible managed relational database service, but selecting it does not state the customer's EC2 responsibility.
  3. Manage the database operating system. ✓
    With an EC2-hosted database, the customer manages the instance operating system and database software.
  4. Use Amazon RDS for automated database management.
    Choosing RDS would change the deployment model; it does not describe the current EC2 customer responsibility.
The trap
Answers with a service choice instead of identifying responsibility for the existing EC2 deployment. Confuses a database engine option with an operational responsibility. Selects a migration capability rather than the customer's continuing EC2 duties.

An EC2-hosted database gives the customer greater operating-system and database management responsibility than managed database services.

11. AWS Database Migration Service: Which option is most relevant?

Hard
A new cloud learner needs to move data from an existing database to AWS and wants a service focused on database migration and replication. Which option is most relevant?
  1. AWS DataSync
    AWS DataSync primarily transfers files and object data, rather than focusing on database migration and replication.
  2. AWS Application Migration Service
    AWS Application Migration Service primarily helps move servers and applications, not database-specific replication.
  3. AWS Schema Conversion Tool
    AWS SCT addresses schema conversion for engine differences, rather than primarily moving and replicating database data.
  4. AWS Database Migration Service ✓
    AWS DMS supports database migration and replication between supported source and target endpoints.
The trap
Confuses general data transfer with a database-focused migration service. Confuses server migration with database migration. Confuses schema transformation with data movement and replication.

AWS Database Migration Service is designed for moving and replicating databases across supported endpoints.

12. AWS Schema Conversion Tool: Which AWS capability is most relevant?

Easy
A manufacturing company is changing database engines and needs help addressing incompatible schema structures. Which AWS capability is most relevant?
  1. AWS Schema Conversion Tool ✓
    AWS SCT helps address schema incompatibilities when converting between different database engines.
  2. AWS Application Migration Service
    AWS Application Migration Service focuses on moving servers and applications, not converting database schemas.
  3. AWS Database Migration Service
    AWS DMS moves and replicates database data, but it does not primarily convert incompatible database schemas.
  4. AWS DataSync
    AWS DataSync transfers files and object data, rather than converting schemas between database engines.
The trap
Confuses database movement with structural schema conversion. Selects a transfer service that does not address database structure differences. Confuses application migration with database schema conversion.

AWS Schema Conversion Tool addresses incompatible database schemas when organizations change database engines.

369 more Cloud Technology and Services questions

The remaining 369 questions in this domain are part of the full AWS Cloud Practitioner bank — 1119 questions, every option explained. Start with the free five-minute check and see your score per domain.

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Other AWS Cloud Practitioner domains

Part of the Certsqill AWS Cloud Practitioner question bank · Cloud Technology and Services · Every answer, right and wrong, comes with its own explanation.