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Amazon AWS-Solution-Architect-Associate 問題練習

AWS Certified Solutions Architect - Associate 試験

最新更新時間: 2019/05/15,合計614問。

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Question No : 1
Content and Media Server is the latest requirement that you need to meet for a client.
The client has been very specific about his requirements such as low latency, high availability, durability, and access control. Potentially there will be millions of views on this server and because of “spiky” usage patterns, operations teams will need to provision static hardware, network, and management resources to support the maximum expected need. The Customer base will be initially low but is expected to grow and become more geographically distributed.
Which of the following would be a good solution for content distribution?

正解:
Explanation:
As your customer base grows and becomes more geographically distributed, using a high- performance edge cache like Amazon CloudFront can provide substantial improvements in latency, fault tolerance, and cost.
By using Amazon S3 as the origin server for the Amazon CloudFront distribution, you gain the advantages of fast in-network data transfer rates, simple publishing/caching workflow, and a unified security framework.
Amazon S3 and Amazon CloudFront can be configured by a web service, the AWS Management Console, or a host of third-party management tools.
Reference: http://media.amazonwebservices.com/architecturecenter/AWS_ac_ra_media_02.pdf

Question No : 2
AWS Identity and Access Management is a web service that enables Amazon Web Services (AWS) customers to manage users and user permissions in AWS. In addition to supporting IAM user policies, some services support resource-based permissions.
Which of the following services are supported by resource-based permissions?

正解:
Explanation:
In addition to supporting IAM user policies, some services support resource-based permissions, which let you attach policies to the service's resources instead of to IAM users or groups. Resource-based permissions are supported by Amazon S3, Amazon SNS, Amazon SQS, Amazon Glacier and Amazon EBS.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_SpecificProducts.html

Question No : 3
A user has launched a large EBS backed EC2 instance in the US-East-1a region. The user wants to achieve Disaster Recovery (DR) for that instance by creating another small instance in Europe.
How can the user achieve DR?

正解:
Explanation:
To launch an EC2 instance it is required to have an AMI in that region. If the AMI is not available in that region, then create a new AMI or use the copy command to copy the AMI from one region to the other region.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/CopyingAMIs.html

Question No : 4
In AWS CloudHSM, in addition to the AWS recommendation that you use two or more HSM appliances in a high-availability configuration to prevent the loss of keys and data, you can also perform a remote backup/restore of a Luna SA partition if you have purchased a:

正解:
Explanation:
In AWS CloudHSM, you can perform a remote backup/restore of a Luna SA partition if you have purchased a Luna Backup HSM.
Reference: http://docs.aws.amazon.com/cloudhsm/latest/userguide/cloud-hsm-backup-restore.html

Question No : 5
A user is sending bulk emails using AWS SES. The emails are not reaching some of the targeted audience because they are not authorized by the ISPs.
How can the user ensure that the emails are all delivered?

正解:
Explanation:
Domain Keys Identified Mail (DKIM) is a standard that allows senders to sign their email messages and ISPs, and use those signatures to verify that those messages are legitimate and have not been modified by a third party in transit.
Reference: http://docs.aws.amazon.com/ses/latest/DeveloperGuide/dkim.html

Question No : 6
What happens to data on an ephemeral volume of an EBS-backed EC2 instance if it is terminated or if it fails?

正解:
Explanation:
Any data on the instance store volumes persists as long as the instance is running, but this data is deleted when the instance is terminated or if it fails (such as if an underlying drive has issues). After an instance store-backed instance fails or terminates, it cannot be restored.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/RootDeviceStorage.html

Question No : 7
A user has created an ELB with the availability zone US-East-1A. The user wants to add more zones to ELB to achieve High Availability.
How can the user add more zones to the existing ELB?
A. The user should stop the ELB and add zones and instances as required
B. The only option is to launch instances in different zones and add to ELB
C. It is not possible to add more zones to the existing ELB
D. The user can add zones on the fly from the AWS console

正解: D
Explanation:
The user has created an Elastic Load Balancer with the availability zone and wants to add more zones to the existing ELB. The user can do so in two ways:
From the console or CLI, add new zones to ELB;
Launch instances in a separate AZ and add instances to the existing ELB.
Reference: http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/enable-disable-az.html

Question No : 8
Are penetration tests allowed as long as they are limited to the customer's instances?

正解:
Explanation:
Penetration tests are allowed after obtaining permission from AWS to perform them.
Reference: http://aws.amazon.com/security/penetration-testing/

Question No : 9
A friend tells you he is being charged $100 a month to host his WordPress website, and you tell him you can move it to AWS for him and he will only pay a fraction of that, which makes him very happy. He then tells you he is being charged $50 a month for the domain, which is registered with the same people that set it up, and he asks if it's possible to move that to AWS as well. You tell him you aren't sure, but will look into it.
Which of the following statements is true in regards to transferring domain names to AWS?

正解:
Explanation:
With Amazon Route 53, you can create and manage your public DNS records with the AWS Management Console or with an easy-to-use API. If you need a domain name, you can find an available name and register it using Amazon Route 53. You can also transfer existing domains into Amazon Route 53’s management.
Reference: http://aws.amazon.com/route53/

Question No : 10
In Amazon Elastic Compute Cloud, which of the following is used for communication between instances in the same network (EC2-Classic or a VPC)?

正解:
Explanation:
A private IP address is an IP address that's not reachable over the Internet. You can use private IP addresses for communication between instances in the same network (EC2-Classic or a VPC).
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-instance-addressing.html

Question No : 11
Which of the following features are provided by Amazon EC2?

正解:
Explanation:
Amazon EC2 provides the following features:
• Virtual computing environments, known as instances;
• Pre-configured templates for your instances, known as Amazon Machine Images (AMIs), that package the bits you need for your server (including the operating system and additional software)
• Various configurations of CPU, memory, storage, and networking capacity for your instances, known as instance types
• Secure login information for your instances using key pairs (AWS stores the public key, and you store the private key in a secure place)
• Storage volumes for temporary data that's deleted when you stop or terminate your instance, known as instance store volumes
• Persistent storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as Amazon EBS volumes
• Multiple physical locations for your resources, such as instances and Amazon EBS volumes, known as regions and Availability Zones
• A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your instances using security groups
• Static IP addresses for dynamic cloud computing, known as Elastic IP addresses
• Metadata, known as tags, that you can create and assign to your Amazon EC2 resources
• Virtual networks you can create that are logically isolated from the rest of the AWS cloud, and that you can optionally connect to your own network, known as virtual private clouds (VPCs).
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html

Question No : 12
A government client needs you to set up secure cryptographic key storage for some of their extremely confidential data. You decide that the AWS CloudHSM is the best service for this.
However, there seem to be a few pre-requisites before this can happen, one of those being a security group that has certain ports open.
Which of the following is correct in regards to those security groups?

正解:
Explanation:
AWS CloudHSM provides secure cryptographic key storage to customers by making hardware security modules (HSMs) available in the AWS cloud.
AWS CloudHSM requires the following environment before an HSM appliance can be provisioned.
A virtual private cloud (VPC) in the region where you want the AWS CloudHSM service.
One private subnet (a subnet with no Internet gateway) in the VPC. The HSM appliance is provisioned into this subnet.
One public subnet (a subnet with an Internet gateway attached). The control instances are attached to this subnet.
An AWS Identity and Access Management (IAM) role that delegates access to your AWS resources to AWS CloudHSM.
An EC2 instance, in the same VPC as the HSM appliance, that has the SafeNet client software installed. This instance is referred to as the control instance and is used to connect to and manage the HSM appliance.
A security group that has port 22 (for SSH) or port 3389 (for RDP) open to your network. This security group is attached to your control instances so you can access them remotely.

Question No : 13
What is the time period with which metric data is sent to CloudWatch when detailed monitoring is enabled on an Amazon EC2 instance?

正解:
Explanation:
By default, Amazon EC2 metric data is automatically sent to CloudWatch in 5-minute periods.
However, you can, enable detailed monitoring on an Amazon EC2 instance, which sends data to CloudWatch in 1-minute periods
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch.html

Question No : 14
In Amazon CloudFront, if you use Amazon EC2 instances and other custom origins with CloudFront, it is recommended to_____.

正解:
Explanation:
In Amazon CloudFront, you should use an Elastic Load Balancing load balancer to handle traffic across multiple Amazon EC2 instances and to isolate your application from changes to Amazon EC2 instances. When you create your CloudFront distribution, specify the URL of the load balancer for the domain name of your origin server.
Reference: http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/CustomOriginBestPractices.html

Question No : 15
An organization has a statutory requirement to protect the data at rest for the S3 objects.
Which of the below mentioned options need not be enabled by the organization to achieve data security?

正解:
Explanation:
AWS S3 provides multiple options to achieve the protection of data at REST. The options include Permission (Policy), Encryption (Client and Server Side), Bucket Versioning and MFA based delete. The user can enable any of these options to achieve data protection. Data replication is an internal facility by AWS where S3 replicates each object across all the Availability Zones and the organization need not enable it in this case.
Reference: http://media.amazonwebservices.com/AWS_Security_Best_Practices.pdf

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