A Company Is Developing a Web Application That Runs on Amazon

question 431

Multiple Choice

A company is developing a web application that runs on Amazon EC2 instances in an Auto Scaling group behind a public-facing Application Load Balancer (ALB) . Only users from a specific country are allowed to access the application. The company needs the ability to log the access requests that have been blocked. The solution should require the least possible maintenance. Which solution meets these requirements?

• A) Create an IPSet containing a list of IP ranges that belong to the specified country. Create an AWS WAF web ACL. Configure a rule to block any requests that do not originate from an IP range in the IPSet. Associate the rule with the web ACL. Associate the web ACL with the ALB.
• B) Create an AWS WAF web ACL. Configure a rule to block any requests that do not originate from the specified country. Associate the rule with the web ACL. Associate the web ACL with the ALB.
• C) Configure AWS Shield to block any requests that do not originate from the specified country. Associate AWS Shield with the ALB.
• D) Create a security group rule that allows ports 80 and 443 from IP ranges that belong to the specified country. Associate the security group with the ALB.

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Definitions:

Input Module Circuit

A part of PLC systems designed to read and process incoming signals from various sensors before feeding them into the control logic.

Voltmeter

An instrument for measuring electric potential differences in volts between two points in an electric circuit.

24 VDC

A reference to a 24-volt direct current power supply, commonly used in industrial control systems and electronics.

Commissioning

The process of verifying and bringing systems, especially in building or industrial contexts, into operational status following installation to ensure they function according to design specifications.