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Q5 Single choice

A hospital in Austin has hosted its web based medical records portal entirely In Oracle cloud Infrastructure (OCI) using Compute Instances for its web-tier and DB system database for its data tier. To validate compliance with Health Insurance Portability and Accountability (HIPAA), the security professional to check their systems it was found that there are a lot of unauthorized coming requests coming from a set of IP addresses originating from a country in Southeast Asia.

Which option can mitigate this type of attack?

A
Block the attacking IP address by creating by Network Security Group rule to deny access to the compute Instance where the web server Is running
B
Block the attacking IP address by implementing a OCI Web Application Firewall policy using Access Control Rules
C
Mitigate the attack by changing the Route fable to redirect the unauthorized traffic to a dummy Compute instance
D
Block the attacking IP address by creating a Security List rule to deny access to the subnet where the web server Is running

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