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Q185. Amazon RDS provides high availability and failover support for DB instances using .
A. customized deployments
B. Appstream customizations
C. log events
D. MuIti-AZ deployments
Answer: D
Explanation:
Amazon RDS provides high availability and failover support for DB instances using MuIti-AZ deployments. MuIti-AZ deployments for Oracle, PostgreSQL, MySQL, and MariaDB DB instances use Amazon technology, while SQL Server DB instances use SQL Server Mrroring.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.IV|u|tiAZ.htmI
Q186. You are designing an intrusion detection prevention (IDS/IPS) solution for a customer web application in a single VPC. You are considering the options for implementing IOS IPS protection for traffic coming from the Internet.
Which of the following options would you consider? (Choose 2 answers)
A. Implement IDS/IPS agents on each Instance running In VPC
B. Configure an instance in each subnet to switch its network interface card to promiscuous mode and analyze network traffic.
C. Implement Elastic Load Balancing with SSL listeners In front of the web applications
D. Implement a reverse proxy layer in front of web servers and configure IDS/ IPS agents on each reverse proxy server.
Answer: B, D
Q187. AWS CIoudFormation is a service that helps you model and set up your Amazon Web Services resources so that you can spend less time managing those resources and more time focusing on your applications that run in AWS. You create a template that describes all the AWS resources that you want (like Amazon EC2 instances or Amazon RDS DB instances), and AWS CIoudFormation takes care of provisioning and configuring those resources for you. What formatting is required for this template?
A. JSON-formatted document
B. CSS-formatted document
C. XML-formatted document
D. HTML-formatted document
Answer: A
Explanation:
You can write an AWS CIoudFormation template (a JSON-formatted document) in a text editor or pick an existing template. The template describes the resources you want and their settings. For example,
suppose you want to create an Amazon EC2. Your template can declare an instance Amazon EC2 and describe its properties, as shown in the following example:
{
"AWSTemp|ateFormatVersion" : "2010-09-O9",
"Description" : "A simple Amazon EC2 instance", "Resources" : {
"MyEC2Instance" : {
"Type" : "AWS::EC2::Instance", "Properties" : {
"Image|d" : "ami-2f726546", "|nstanceType" : "t1.micro"
}
}
}
}
Reference:
http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/cfn-whatis-howdoesitwork.html
Q188. What is the data model of DynamoDB?
A. Since DynamoDB is schema-less, there is no data model.
B. "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
C. "TabIe", a collection of Items; "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
D. "Database", which is a set of "TabIes", which is a set of "Items", which is a set of "Attributes".
Answer: C
Explanation:
The data model of DynamoDB is: "TabIe", a collection of Items;
"Items", with Keys and one or more Attribute; "Attribute", with Name and Value.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModeI.html
Q189. When does the billing of an Amazon EC2 system begin?
A. It starts when the Status column for your distribution changes from Creating to Deployed.
B. It starts as soon as you click the create instance option on the main EC2 console.
C. It starts when your instance reaches 720 instance hours.
D. It starts when Amazon EC2 initiates the boot sequence of an AM instance.
Answer: D
Explanation:
Billing commences when Amazon EC2 initiates the boot sequence of an AM instance. Billing ends when the instance terminates, which could occur through a web services command, by running "shutdown -h", or through instance failure. When you stop an instance, Amazon shuts it down but doesn/Et charge hourly usage for a stopped instance, or data transfer fees, but charges for the storage for any Amazon EBS volumes.
Reference: http://aws.amazon.com/ec2/faqs/
Q190. In the context of AWS support, why must an EC2 instance be unreachable for 20 minutes rather than allowing customers to open tickets immediately?
A. Because most reachability issues are resolved by automated processes in less than 20 minutes
B. Because all EC2 instances are unreachable for 20 minutes every day when AWS does routine maintenance
C. Because all EC2 instances are unreachable for 20 minutes when first launched
D. Because of all the reasons listed here
Answer: A
Explanation:
An EC2 instance must be unreachable for 20 minutes before opening a ticket, because most reachability issues are resolved by automated processes in less than 20 minutes and will not require any action on the part of the customer. If the instance is still unreachable after this time frame has passed, then you should open a case with support.
Reference: https://aws.amazon.com/premiumsupport/faqs/
Q191. If I write the below command, what does it do? ec2-run ami-e3a5408a -n 20 -g appserver
A. Start twenty instances as members of appserver group.
B. Creates 20 rules in the security group named appserver
C. Terminate twenty instances as members of appserver group.
D. Start 20 security groups
Answer: A
Q192. You have a lot of data stored in the AWS Storage Gateway and your manager has come to you asking about how the billing is calculated, specifically the Virtual Tape Shelf usage. What would be a correct response to this?
A. You are billed for the virtual tape data you store in Amazon Glacier and are billed for the size of the virtual tape.
B. You are billed for the virtual tape data you store in Amazon Glacier and billed for the portion of virtual tape capacity that you use, not for the size of the virtual tape.
C. You are billed for the virtual tape data you store in Amazon S3 and billed for the portion of virtual tape capacity that you use, not for the size of the virtual tape.
D. You are billed for the virtual tape data you store in Amazon S3 and are billed for the size of the virtual tape.
Answer: B
Explanation:
The AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage to provide seamless and secure integration between an organization’s on-premises IT environment and AWS’s storage infrastructure.
AWS Storage Gateway billing is as follows. Volume storage usage (per GB per month):
You are billed for the Cached volume data you store in Amazon S3. You are only billed for volume capacity you use, not for the size of the volume you create.
Snapshot Storage usage (per GB per month): You are billed for the snapshots your gateway stores in Amazon S3. These snapshots are stored and billed as Amazon EBS snapshots. Snapshots are incremental backups, reducing your storage charges. When taking a new snapshot, only the data that has changed since your last snapshot is stored.
Virtual Tape Library usage (per GB per month):
You are billed for the virtual tape data you store in Amazon S3. You are only billed for the portion of virtual tape capacity that you use, not for the size of the virtual tape.
Virtual Tape Shelf usage (per GB per month):
You are billed for the virtual tape data you store in Amazon Glacier. You are only billed for the portion of virtual tape capacity that you use, not for the size of the virtual tape.
Reference: https://aws.amazon.com/storagegateway/faqs/