A company plans to create a data lake that uses Amazon S3.
Which factor will have the MOST effect on cost?
The selection of S3 storage tiers
Charges to transfer existing data into Amazon S3
The addition of S3 bucket policies
S3 ingest fees for each request
Answer is The selection of S3 storage tiers
If they have infrequently accessed data then they must select tier accordingly. Similarly may be glacier is an option for them
Question 282
A company is launching an ecommerce application that must always be available. The application will run on Amazon EC2 instances continuously for the next
12 months.
What is the MOST cost-effective instance purchasing option that meets these requirements?
Spot Instances
Savings Plans
Dedicated Hosts
On-Demand Instances
Answer is Savings Plans
Amazon EC2 Savings Plans enable you to reduce your compute costs by committing to a consistent amount of compute usage for a 1-year or 3-year term. This results in savings of up to 72% over On-Demand Instance costs. Any usage up to the commitment is charged at the discounted Savings Plan rate (for example, $10 an hour). Any usage beyond the commitment is charged at regular On-Demand Instance rates.
Question 283
Which task requires using AWS account root user credentials?
Viewing billing information
Changing the AWS Support plan
Starting and stopping Amazon EC2 instances
Opening an AWS Support case
Answer is Changing the AWS Support plan
It is the most important action within the given options and corresponds to root account to change it.
How does the AWS Cloud pricing model differ from the traditional on-premises storage pricing model?
AWS resources do not incur costs
There are no infrastructure operating costs
There are no upfront cost commitments
There are no software licensing costs
Answer is There are no upfront cost commitments
No upfront or capital expenditure. But On premise or AWS will have operational expenditure (OpEx), and the same is managed/covered by the fees you pay for AWS.
Question 285
Which of the following are benefits of Amazon EC2 Auto Scaling? (Choose two.)
Improved health and availability of applications
Reduced network latency
Optimized performance and costs
Automated snapshots of data
Cross-Region Replication
Answers are;
A. Improved health and availability of applications
C. Optimized performance and costs
Auto Scaling benefits are Better fault tolerance, Availability and Cost management.
A company has several departments. Each department has its own AWS accounts for its applications.
The company wants all AWS costs on a single invoice to simplify payment, but the company wants to know the costs that each department is incurring.
Which AWS tool or feature will provide this functionality?
A company has a workload that will run continuously for 1 year. The workload cannot tolerate service interruptions.
Which Amazon EC2 purchasing option will be MOST cost-effective?
All Upfront Reserved Instances
Partial Upfront Reserved Instances
Dedicated Instances
On-Demand Instances
Answer is All Upfront Reserved Instances
With the All Upfront option, you pay for the entire Reserved Instance term with one upfront payment. This option provides you with the largest discount compared to On-Demand Instance pricing.
A pharmaceutical company operates its infrastructure in a single AWS Region. The company has thousands of VPCs in a various AWS accounts that it wants to interconnect.
Which AWS service or feature should the company use to help simplify management and reduce operational costs?
VPC endpoint
AWS Direct Connect
AWS Transit Gateway
VPC peering
Answer is AWS Transit Gateway
AWS Transit Gateway connects VPCs and on-premises networks through a central hub. This simplifies your network and puts an end to complex peering relationships. It acts as a cloud router – each new connection is only made once.
A company is planning an infrastructure deployment to the AWS Cloud. Before the deployment, the company wants a cost estimate for running the infrastructure.
Which AWS service or feature can provide this information?