Test
AWS Ch7 Exam
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Preguntas del test (20)
1Which AWS database service is best suited for traditional Online Transaction Processing (OLTP)?
- AAmazon Redshift
- BAmazon Relational Database Service (Amazon RDS)
- CAmazon Glacier
- DElastic Database
2Which AWS database service is best suited for non-relational databases?
- AAmazon Redshift
- BAmazon Relational Database Service (Amazon RDS)
- CAmazon Glacier
- DAmazon DynamoDB
3You are a solutions architect working for a media company that hosts its website on AWS. Currently, there is a single Amazon Elastic Compute Cloud (Amazon EC2) Instance on AWS with MySQL installed locally to that Amazon EC2 Instance. You have been asked to make the company’s production environment more resilient and to increase performance. You suggest that the company split out the MySQL database onto an Amazon RDS Instance with Multi-AZ enabled. This addresses the company’s increased resiliency requirements. Now you need to suggest how you can increase performance. Ninety-nine percent of the company’s end users are magazine subscribers who will be reading additional articles on the website, so only one percent of end users will need to write data to the site. What should you suggest to increase performance?
- AAlter the connection string so that if a user is going to write data, it is written to the secondary copy of the Multi-AZ database.
- BAlter the connection string so that if a user is going to write data, it is written to the primary copy of the Multi-AZ database.
- CRecommend that the company use read replicas, and distribute the traffic across multiple read replicas.
- DMigrate the MySQL database to Amazon Redshift to take advantage of columnar storage and maximize performance.
4Which AWS Cloud service is best suited for Online Analytics Processing (OLAP)?
- AAmazon Redshift
- BAmazon Relational Database Service (Amazon RDS)
- CAmazon Glacier
- DAmazon DynamoDB
5You have been using Amazon Relational Database Service (Amazon RDS) for the last year to run an important application with automated backups enabled. One of your team members is performing routine maintenance and accidentally drops an important table, causing an outage. How can you recover the missing data while minimizing the duration of the outage?
- APerform an undo operation and recover the table.
- BRestore the database from a recent automated DB snapshot.
- CRestore only the dropped table from the DB snapshot.
- DThe data cannot be recovered.
6Which Amazon Relational Database Service (Amazon RDS) database engines support Multi-AZ?
- AAll of them
- BMicrosoft SQL Server, MySQL, and Oracle
- COracle, Amazon Aurora, and PostgreSQL
- DMySQL
7Which Amazon Relational Database Service (Amazon RDS) database engines support read replicas?
- AMicrosoft SQL Server and Oracle
- BMySQL, MariaDB, PostgreSQL, and Aurora
- CAurora, Microsoft SQL Server, and Oracle
- DMySQL and PostgreSQL
8Your team is building an order processing system that will span multiple Availability Zones. During testing, the team wanted to test how the application will react to a database failover. How can you enable this type of test?
- AForce a Multi-AZ failover from one Availability Zone to another by rebooting the primary instance using the Amazon RDS console.
- BTerminate the DB instance, and create a new one. Update the connection string.
- CCreate a support case asking for a failover.
- DIt is not possible to test a failover.
9You are a system administrator whose company has moved its production database to AWS. Your company monitors its estate using Amazon CloudWatch, which sends alarms using Amazon Simple Notification Service (Amazon SNS) to your mobile phone. One night, you get an alert that your primary Amazon Relational Database Service (Amazon RDS) Instance has gone down. You have Multi-AZ enabled on this instance. What should you do to ensure the failover happens quickly?
- AUpdate your Domain Name System (DNS) to point to the secondary instance’s new IP address, forcing your application to fail over to the secondary instance.
- BConnect to your server using Secure Shell (SSH) and update your connection strings so that your application can communicate to the secondary instance instead of the failed primary instance.
- CTake a snapshot of the secondary instance and create a new instance using this snapshot, then update your connection string to point to the new instance.
- DNo action is necessary. Your connection string points to the database endpoint, and AWS automatically updates this endpoint to point to your secondary instance.
10You are working for a small organization without a dedicated database administrator on staff. You need to install Microsoft SQL Server Enterprise edition quickly to support an accounting back office application on Amazon Relational Database Service (Amazon RDS). What should you do?
- ALaunch an Amazon RDS DB Instance, and select Microsoft SQL Server Enterprise Edition under the Bring Your Own License (BYOL) model.
- BProvision SQL Server Enterprise Edition using the License Included option from the Amazon RDS Console.
- CSQL Server Enterprise edition is only available via the Command Line Interface (CLI). Install the command-line tools on your laptop, and then provision your new Amazon RDS Instance using the CLI.
- DYou cannot use SQL Server Enterprise edition on Amazon RDS. You should install this on to a dedicated Amazon Elastic Compute Cloud (Amazon EC2) Instance.
11You are building the database tier for an enterprise application that gets occasional activity throughout the day. Which storage type should you select as your default option?
- AMagnetic storage
- BGeneral Purpose Solid State Drive (SSD)
- CProvisioned IOPS (SSD)
- DStorage Area Network (SAN)-attached
12You are designing an e-commerce web application that will scale to potentially hundreds of thousands of concurrent users. Which database technology is best suited to hold the session state for large numbers of concurrent users?
- ARelational database using Amazon Relational Database Service (Amazon RDS)
- BNoSQL database table using Amazon DynamoDB
- CData warehouse using Amazon Redshift
- DAmazon Simple Storage Service (Amazon S3)
13Which of the following techniques can you use to help you meet Recovery Point Objective (RPO) and Recovery Time Objective (RTO) requirements? (Choose 3 answers)
- ADB snapshots
- BDB option groups
- CRead replica
- DMulti-AZ deployment
14When using Amazon Relational Database Service (Amazon RDS) Multi-AZ, how can you offload read requests from the primary? (Choose 2 answers)
- AConfigure the connection string of the clients to connect to the secondary node and perform reads while the primary is used for writes.
- BAmazon RDS automatically sends writes to the primary and sends reads to the secondary.
- CAdd a read replica DB instance, and configure the client’s application logic to use a read-replica.
- DCreate a caching environment using ElastiCache to cache frequently used data. Update the application logic to read/write from the cache.
15You are building a large order processing system and are responsible for securing the database. Which actions will you take to protect the data? (Choose 3 answers)
- AAdjust AWS Identity and Access Management (IAM) permissions for administrators.
- BConfigure security groups and network Access Control Lists (ACLs) to limit network access.
- CConfigure database users, and grant permissions to database objects.
- DInstall anti-virus software on the Amazon RDS DB Instance.
16Your team manages a popular website running Amazon Relational Database Service (Amazon RDS) MySQL backend. The Marketing department has just informed you about an upcoming television commercial that will drive thousands of new visitors to the website. How can you prepare your database to handle the load? (Choose 3 answers)
- AVertically scale the DB Instance by selecting a more powerful instance class.
- BCreate read replicas to offload read requests and update your application.
- CUpgrade the storage from Magnetic volumes to General Purpose Solid State Drive (SSD) volumes.
- DUpgrade to Amazon Redshift for faster columnar storage.
17You are building a photo management application that maintains metadata on millions of images in an Amazon DynamoDB table. When a photo is retrieved, you want to display the metadata next to the image. Which Amazon DynamoDB operation will you use to retrieve the metadata attributes from the table?
- AScan operation
- BSearch operation
- CQuery operation
- DFind operation
18You are creating an Amazon DynamoDB table that will contain messages for a social chat application. This table will have the following attributes: Username (String), Timestamp (Number), Message (String). Which attribute should you use as the partition key? The sort key?
- AUsername, Timestamp
- BUsername, Message
- CTimestamp, Message
- DMessage, Timestamp
19Which statement about Amazon DynamoDB tables is true?
- AGlobal secondary indexes can only be created when the table is being created.
- BLocal secondary indexes can only be created when the table is being created.
- CYou can only have one global secondary index.
- DYou can only have one local secondary index.
20 Which of the following workloads are a good fit for running on Amazon Redshift? (Choose 2 answers)
- ATransactional database supporting a busy e-commerce order processing website
- BReporting database supporting back-office analytics
- CData warehouse used to aggregate multiple disparate data sources
- DManage session state and user profile data for thousands of concurrent users
Información
- Descripción
- Praxis Digital Technologies Test sobre AWS Ch7 Exam, creado por Tim Urista el 09/03/2018.
- Autor
- Tim Urista
- Idioma
- English
- Visitas
- 533
- Etiquetas
- Valoración
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