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Q193. You've been brought in as solutions architect to assist an enterprise customer with their migration of an e-commerce platform to Amazon Virtual Private Cloud (VPC) The previous architect has already deployed a 3-tier VPC, The configuration is as follows:
VPC: vpc-2f8bc447 IGW: igw-2d8bc445 NACL: ad-208bc448
5ubnets and Route Tables: Web sewers: subnet-258bc44d
Application servers: subnet-248bc44c Database sewers: subnet-9189c6f9 Route Tables:
rrb-218bc449 rtb-238bc44b Associations:
subnet-258bc44d : rtb-218bc449 subnet-248bc44c : rtb-238bc44b subnet-9189c6f9 : rtb-238bc44b
You are now ready to begin deploying EC2 instances into the VPC Web servers must have direct access to the internet Application and database sewers cannot have direct access to the internet.
Which configuration below will allow you the ability to remotely administer your application and database servers, as well as allow these sewers to retrieve updates from the Internet?
A. Create a bastion and NAT instance in subnet-258bc44d, and add a route from rtb- 238bc44b to the NAT instance.
B. Add a route from rtb-238bc44b to igw-2d8bc445 and add a bastion and NAT instance within subnet-248bc44c.
C. Create a bastion and NAT instance in subnet-248bc44c, and add a route from rtb- 238bc44b to subneb258bc44d.
D. Create a bastion and NAT instance in subnet-258bc44d, add a route from rtb-238bc44b to Igw- 2d8bc445, and a new NACL that allows access between subnet-258bc44d and subnet -248bc44c.
Answer: A
Q194. You have recently joined a startup company building sensors to measure street noise and air quality in urban areas. The company has been running a pilot deployment of around 100 sensors for 3 months each sensor uploads 1KB of sensor data every minute to a backend hosted on AWS.
During the pilot, you measured a peak or 10 IOPS on the database, and you stored an average of 3GB of sensor data per month in the database.
The current deployment consists of a load-balanced auto scaled Ingestion layer using EC2 instances and a PostgreSQL RDS database with 500GB standard storage.
The pilot is considered a success and your CEO has managed to get the attention or some potential investors. The business plan requires a deployment of at least IOOK sensors which needs to be supported by the backend. You also need to store sensor data for at least two years to be able to compare year over year Improvements.
To secure funding, you have to make sure that the platform meets these requirements and leaves room for further scaling. Which setup win meet the requirements?
A. Add an SQS queue to the ingestion layer to buffer writes to the RDS instance
B. Ingest data into a DynamoDB table and move old data to a Redshift cluster
C. Replace the RDS instance with a 6 node Redshift cluster with 96TB of storage
D. Keep the current architecture but upgrade RDS storage to 3TB and IOK provisioned IOPS
Answer: C
Q195. Which of the following is NOT a characteristic of Amazon Elastic Compute Cloud (Amazon EC2)?
A. It can be used to launch as many or as few virtual servers as you need.
B. It increases the need to forecast traffic by providing dynamic IP addresses for static cloud computing.
C. It eliminates your need to invest in hardware up front, so you can develop and deploy applications faster.
D. It offers scalable computing capacity in the Amazon Web Services (AWS) cloud.
Answer: B
Explanation:
Amazon Elastic Compute Cloud (Amazon EC2) provides scalable computing capacity in the Amazon Web Services (AWS) cloud. Using Amazon EC2 eliminates your need to invest in hardware up front, so you can develop and deploy applications faster. You can use Amazon EC2 to launch as many or as few virtual servers as you need, configure security and networking, and manage storage. Amazon EC2 enables you
to scale up or down to handle changes in requirements or spikes in popularity, reducing your need to forecast traffic.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html
Q196. You want to use AWS Import/Export to send data from your S3 bucket to several of your branch offices. What should you do if you want to send 10 storage units to AWS?
A. Make sure your disks are encrypted prior to shipping.
B. Make sure you format your disks prior to shipping.
C. Make sure your disks are 1TB or more.
D. Make sure you submit a separate job request for each device.
Answer: D
Explanation:
When using Amazon Import/Export, a separate job request needs to be submitted for each physical device even if they belong to the same import or export job.
Reference: http://docs.aws.amazon.com/AWSImportExport/latest/DG/Concepts.html
Q197. Amazon SWF is designed to help users
A. Design graphical user interface interactions
B. Manage user identification and authorization
C. Store Web content
D. Coordinate synchronous and asynchronous tasks which are distributed and fault tolerant.
Answer: D
Q198. You are in the process of creating a Route 53 DNS failover to direct traffic to two EC2 zones. Obviously, if one fails, you would like Route 53 to direct traffic to the other region. Each region has an ELB with some instances being distributed. What is the best way for you to configure the Route 53 health check?
A. Route 53 doesn't support ELB with an internal health check.You need to create your own Route 53 health check of the ELB
B. Route 53 natively supports ELB with an internal health check. Turn "Eva|uate target health" off and "Associate with Health Check" on and R53 will use the ELB's internal health check.
C. Route 53 doesn't support ELB with an internal health check. You need to associate your resource record set for the ELB with your own health check
D. Route 53 natively supports ELB with an internal health check. Turn "Eva|uate target health" on and "Associate with Health Check" off and R53 will use the ELB's internal health check.
Answer: D
Explanation:
With DNS Failover, Amazon Route 53 can help detect an outage of your website and redirect your end users to alternate locations where your application is operating properly. When you enable this feature, Route 53 uses health checks-regularly making Internet requests to your appIication’s endpoints from multiple locations around the world-to determine whether each endpoint of your application is up or down.
To enable DNS Failover for an ELB endpoint, create an Alias record pointing to the ELB and set the "EvaIuate Target HeaIth" parameter to true. Route 53 creates and manages the health checks for your ELB automatically. You do not need to create your own Route 53 health check of the ELB. You also do not need to associate your resource record set for the ELB with your own health check, because Route 53 automatically associates it with the health checks that Route 53 manages on your behalf. The ELB health check will also inherit the health of your backend instances behind that ELB.
Reference:
http://aws.amazon.com/about-aws/whats-new/2013/05/30/amazon-route-53-adds-elb-integration-for-dns- fai|over/
Q199. You are running PostgreSQL on Amazon RDS and it seems to be all running smoothly deployed in one availability zone. A database administrator asks you if DB instances running PostgreSQL support MuIti-AZ deployments. What would be a correct response to this QUESTION ?
A. Yes.
B. Yes but only for small db instances.
C. No.
D. Yes but you need to request the service from AWS.
Answer: A
Explanation:
Amazon RDS supports DB instances running several versions of PostgreSQL. Currently we support PostgreSQL versions 9.3.1, 9.3.2, and 9.3.3. You can create DB instances and DB snapshots,
point-in-time restores and backups.
DB instances running PostgreSQL support MuIti-AZ deployments, Provisioned IOPS, and can be created inside a VPC. You can also use SSL to connect to a DB instance running PostgreSQL.
You can use any standard SQL client application to run commands for the instance from your client computer. Such applications include pgAdmin, a popular Open Source administration and development tool for PostgreSQL, or psql, a command line utility that is part of a PostgreSQL installation. In order to deliver a managed service experience, Amazon RDS does not provide host access to DB instances, and it restricts access to certain system procedures and tables that require advanced prMleges. Amazon RDS supports access to databases on a DB instance using any standard SQL client application. Amazon RDS does not allow direct host access to a DB instance via Telnet or Secure Shell (SSH).
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_PostgreSQL.htmI
Q200. How many types of block devices does Amazon EC2 support A
A. 2
B. 3
C. 4
D. 1
Answer: A