An IT company wants to securely perform an on-off migration of its on-premises VMs to the AWS Cloud by using AWS Server Migration Service {AWS SMS) For the first phase of the migration, the company must migrate 50 development VMs m batches during non-peak times over the next 7 days The VMs are between 2 GB and 5 GB in size The company has 1 Gbps of available bandwidth over the internet
Which network connectivity option meets these requirements MOST cost-effectively?
Your business has implemented a highly available Direct Connect system that makes use of two datacenters. Each data center is equipped with one LAG with two connections and one ordinary DX connection.
How many LOAs will be completed in total if your organization successfully completes an order for the addition of a new connection to each of the LAGs?
A company has two on-premises data center locations. There is a company-managed router at earn data center. Each data center has a dedicated AWS Direct Connect connection to a Direct Connect gateway through a private virtual interface The router for the first location is advertising 110 routes to the Direct Connect gateway by using BGP and the router tor the second location is advertising 60 routes to the Direct Connect gateway by using BGP The Direct Connect gateway is attached to a company VPC through a virtual private gateway
A network engineer receives reports that resources In the VPC are not reachable from various locations in either data center. The network engineer checks the VPC route table and sees that the routes from the first data center. location are not being populated into the route table The network engineer must resolve this issue in the most operationally efficient manner
What should the network engineer do to meet these requirements'
A company has applications running in a single AWS Region and its on premises data center in a hybrid mode The company has a 1Gbps AWS Direct Connect connection from the data center to AWS that is 65% utilized. The company has an AWS Enterprise Support plan
The company is planning to deploy a new critical application on AWS that will connect with existing applications running in the data center. The application SLA requires a minimum ot 99.9% network uptime between the data center and AWS.
What is the MOST cost-effective way to meet this SLA requirement?
All IP addresses within a 10.0.0.0/16 VPC are fully utilized with application servers across two Availability Zones. The application servers need to send frequent UDP probes to a single central authentication server on the Internet to confirm that is running up-to-date packages. The network is designed for application servers to use a single NAT gateway for internal access. Testing reveals that a few of the servers are unable to communicate with the authentication server.
Ref: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html
'A NAT gateway can support up to 55,000 simultaneous connections to each unique destination. This limit also applies if you create approximately 900 connections per second to a single destination (about 55,000 connections per minute). If the destination IP address, the destination port, or the protocol (TCP/UDP/ICMP) changes, you can create an additional 55,000 connections. For more than 55,000 connections, there is an increased chance of connection errors due to port allocation errors. These errors can be monitored by viewing the ErrorPortAllocation CloudWatch metric for your NAT gateway. For more information, see Monitoring NAT Gateways Using Amazon CloudWatch.'
Currently there are no comments in this discussion, be the first to comment!