You Have a Business-To-Business Web Application Running in a VPC

question 515

Multiple Choice

You have a business-to-business web application running in a VPC consisting of an Elastic Load Balancer (ELB) , web servers, application servers and a database. Your web application should only accept traffic from pre-defined customer IP addresses. Which two options meet this security requirement? (Choose two.)

• A) Configure web server VPC security groups to allow traffic from your customers' IPs
• B) Configure your web servers to filter traffic based on the ELB's "X-forwarded-for" header
• C) Configure ELB security groups to allow traffic from your customers' IPs and deny all outbound traffic
• D) Configure a VPC NACL to allow web traffic from your customers' IPs and deny all outbound traffic

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Definitions:

Collinearity

A statistical phenomenon where two or more predictor variables in a multiple regression model are highly correlated, making it difficult to isolate the individual effects of each predictor.

Odds Ratio

The odds that y = 1 given that one of the independent variables increased by one unit (odds1) divided by the odds that y = 1 given no change in the values for the independent variables (odds0); that is, Odds ratio = odds1 / odds0.

Estimated Income

An estimate of the revenue anticipated to be generated during a certain timeframe.

Yearly Income

The total pre-tax earnings received by an individual or household over the course of one year from all sources combined.