You are preparing to launch Amazon WorkSpaces and need to configure the appropriate networking resources. What must be configured to meet this requirement?

• A.At least two subnets in different Availability Zones.
• B.A dedicated VPC with Active Directory Services.
• C.An IPsec VPN to on-premises Active Directory
• D.Network address translation for outbound traffic.

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You have been tasked with migrating your company's proprietary massively large dataset sorting application to AWS. The application currently runs on 4 highly spec'd servers that are in a cluster arrangement and runs 24x7, with the average CPU utilisation across any 24hr period being approx 85% - the migration of this cluster once up and running on AWS is expected to run similarly. The servers shuffle data internally and between themselves. Your company's financial performance is entirely dependent on the speed at which it can sort your customers datasets, that is the faster a sorted result can be returned the better your company's bottom line. Of the choices presented below, select the optimal network configuration that will ensure the best financial results for your company.

• A.Disable Jumbo Frames to ensure better data throughput between instances
• B.Enable Jumbo Frames to ensure better data throughput between instances
• C.Create an autoscaled group of c4.8xlarge instances - with min 1 and max 4 - this will ensure your operational costs a minimal
• D.Configure a CloudWatch Alarm to add more CPUs to the instances when average cluster CPU utilisation breaches 85%

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An organization has three AWS accounts with each containing VPCs in Virginia, Canada and the Sydney regions. The organization wants to determine whether all available Elastic IP addresses (EIPs) in these accounts are attached to Amazon EC2 instances or in use elastic network interfaces (ENIs) in all of the specified regions for compliance and cost-optimization purposes.
Which of the following meets the requirements with the LEAST management overhead?

• A.Use an Amazon CloudWatch Events rule to schedule an AWS Lambda function in each account in all three regions to find the unattached and unused EIPs.
• B.Use a CloudWatch event bus to schedule Lambda functions in each account in all three regions to find the unattached and unused EIPs.
• C.Add an AWS managed, EIP-attached AWS Config rule in each region in all three accounts to find unattached and unused EIPs.
• D.Use AWS CloudFormation StackSets to deploy an AWS Config EIP-attached rule in all accounts and regions to find the unattached and unused EIPs.

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You have a global corporate network with 153 individual IP prefixes in your internal routing table. You establish a private virtual interface over AWS Direct Connect to a VPC that has an Internet gateway (IGW).
All instances in the VPC must be able to route to the Internet via an IGW and route to the global corporate network via the VGW.
How should you configure your on-premises BGP peer to meet these requirements?

• A.Configure AS-Prepending on your BGP session
• B.Summarize your prefix announcement to less than 100
• C.Announce a default route to the VPC over the BGP session
• D.Enable route propagation on the VPC route table

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You ping an Amazon Elastic Compute Cloud (EC2) instance from an on-premises server. VPC Flow Logs record the following:
2 123456789010 eni-1235b8ca 10.123.234.78 172.11.22.33 0 0 1 8 672 1432917027
1432917142 ACCEPT OK
2 123456789010 eni-1235b8ca 172.11.22.33 10.123.234.78 0 0 1 4 336 1432917027
1432917082 ACCEPT OK
2 123456789010 eni-1235b8ca 172.11.22.33 10.123.234.78 0 0 1 4 336 1432917094
1432917142 REJECT OK
Why are ICMP responses not received by the on-premises system?

• A.The inbound security group is blocking the traffic.
• B.The outbound security group is blocking the traffic.
• C.The inbound network access control list is blocking the traffic
• D.The outbound network access control list is blocking the traffic

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