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Q181. You must increase storage size in increments of at least _ %

A. 40

B. 20

C. 50

D. 10

Answer: D


Q182. You are setting up your first Amazon Virtual Private Cloud (Amazon VPC) network so you decide you should probably use the AWS Management Console and the VPC Wizard. Which of the following is not an option for network architectures after launching the "Start VPC Wizard" in Amazon VPC page on the AWS Management Console?

A. VPC with a Single Public Subnet Only

B. VPC with a Public Subnet Only and Hardware VPN Access

C. VPC with Public and Private Subnets and Hardware VPN Access

D. VPC with a Private Subnet Only and Hardware VPN Access 

Answer: B

Explanation:

Amazon VPC enables you to build a virtual network in the AWS cloud - no VPNs, hardware, or physical datacenters required.

Your AWS resources are automatically provisioned in a ready-to-use default VPC. You can choose to create additional VPCs by going to Amazon VPC page on the AWS Management Console and click on the "Start VPC Wizard" button.

You’II be presented with four basic options for network architectures. After selecting an option, you can modify the size and IP address range of the VPC and its subnets. If you select an option with Hardware VPN Access, you will need to specify the IP address of the VPN hardware on your network. You can modify the VPC to add more subnets or add or remove gateways at any time after the VPC has been created.

The four options are:

VPC with a Single Public Subnet Only VPC with Public and Private Subnets

VPC with Public and Private Subnets and Hardware VPN Access VPC with a Private Subnet Only and Hardware VPN Access Reference: https://aws.amazon.com/vpc/faqs/


Q183. A scope has been handed to you to set up a super fast gaming server and you decide that you will use Amazon DynamoDB as your database. For efficient access to data in a table, Amazon DynamoDB creates and maintains indexes for the primary key attributes. A secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations. How many types of secondary indexes does DynamoDB support?

A. 2

B. 16

C. 4

D. As many as you need. 

Answer: A

Explanation:

DynamoDB supports two types of secondary indexes:

Local secondary index — an index that has the same hash key as the table, but a different range key. A local secondary index is "IocaI" in the sense that every partition of a local secondary index is scoped to a table partition that has the same hash key.

Global secondary index — an index with a hash and range key that can be different from those on the table. A global secondary index is considered "gIobaI" because queries on the index can span all of the data in a table, across all partitions.

Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Secondarylndexes.html


Q184. True or False: When you perform a restore operation to a point in time or from a DB Snapshot, a new DB Instance is created with a new endpoint.

A. FALSE

B. TRUE

Answer: B


Q185. You have deployed a three-tier web application in a VPC with a CIOR block of 10 0 0 0/ 28 You initially deploy two web servers, two application sewers, two database sewers and one NAT instance tor a total   of seven EC2 instances The web. Application and database servers are deployed across two availability zones (AZs). You also deploy an ELB in front of the two web sewers, and use Route53 for DN5 Web (raffile gradually increases in the first few days following the deployment, so you attempt to double the number of instances in each tier of the application to handle the new load unfortunately some of these new instances fail to launch.

Which of the following could De the root caused? (Choose 2 answers)

A. AW5 resewes the first and the last private IP address in each subnet's CIDR block so you do not have enough addresses left to launch all of the new EC2 instances

B. The Internet Gateway (IGW) of your VPC has scaled-up, adding more instances to handle the traffic spike, reducing the number of available private IP addresses for new instance launches

C. The ELB has scaled-up, adding more instances to handle the traffic spike, reducing the number of available private IP addresses for new instance launches

D. AW5 reserves one IP address in each subnet's CIDR block for Route53 so you do not have enough addresses left to launch all of the new EC2 instances

E. AW5 reserves the first four and the last IP address in each subnet's CIDR block so you do not have

enough addresses left to launch all of the new EC2 instances 

Answer: C, E


Q186. Please select the Amazon EC2 resource which cannot be tagged.

A. images (AM|s, kernels, RAM disks)

B. Amazon EBS volumes

C. Elastic IP addresses

D. VPCs

Answer: C


Q187. Can we attach an EBS volume to more than one EC2 instance at the same time?

A. No

B. Yes.

C. Only EC2-optimized EBS volumes.

D. Only in read mode. 

Answer: A


Q188. Which of the following AWS CLI commands is syntactically incorrect?

1. $ aws ec2 describe-instances

2. $ aws ec2 start-instances --instance-ids i-1348636c

3. $ aws sns publish --topic-arn arn:aws:sns:us-east-1:546419318123:OperationsError -message "Script Failure"

4. $ aws sqs receive-message --queue-urI https://queue.amazonaws.com/546419318123/Test

A. 3

B. 4

C. 2

D. 1

Answer: A 

Explanation:

The following CLI command is missing a hyphen before "-message".

aws sns publish --topic-arn arn:aws:sns:us-east-1:546419318123:OperationsError -message "Script Failure"

It has been added below in red

aws sns publish --topic-arn arn:aws:sns:us-east-1:546419318123:OperationsError ---message "Script Failure"

Reference: http://aws.amazon.com/c|i/


Q189. Doug has created a VPC with CIDR 10.201.0.0/16 in his AWS account. In this VPC he has created a public subnet with CIDR block 10.201.31.0/24. While launching a new EC2 from the console, he is not able to assign the private IP address 10.201.31.6 to this instance. Which is the most likely reason for this issue?

A. Private IP address 10.201.31.6 is blocked via ACLs in Amazon infrastructure as a part of platform security.

B. Private address IP 10.201.31.6 is currently assigned to another interface.

C. Private IP address 10.201.31.6 is not part of the associated subnet's IP address range.

D. Private IP address 10.201.31.6 is reserved by Amazon for IP networking purposes. 

Answer: B

Explanation:

In Amazon VPC, you can assign any Private IP address to your instance as long as it is: Part of the associated subnet's IP address range

Not reserved by Amazon for IP networking purposes Not currently assigned to another interface Reference: http://aws.amazon.com/vpc/faqs/


Q190. Which DNS name can only be resolved within Amazon EC2?

A. Internal DNS name

B. External DNS name

C. Global DNS name

D. Private DNS name 

Answer: A