A Security Engineer Has Been Asked to Troubleshoot Inbound Connectivity

question 62

Multiple Choice

A Security Engineer has been asked to troubleshoot inbound connectivity to a web server. This single web server is not receiving inbound connections from the internet, whereas all other web servers are functioning properly. The architecture includes network ACLs, security groups, and a virtual security appliance. In addition, the Development team has implemented Application Load Balancers (ALBs) to distribute the load across all web servers. It is a requirement that traffic between the web servers and the internet flow through the virtual security appliance. The Security Engineer has verified the following: 1. The rule set in the Security Groups is correct 2. The rule set in the network ACLs is correct 3. The rule set in the virtual appliance is correct Which of the following are other valid items to troubleshoot in this scenario? (Choose two.)

• A) Verify that the 0.0.0.0/0 route in the route table for the web server subnet points to a NAT gateway.
• B) Verify which Security Group is applied to the particular web server's elastic network interface (ENI).
• C) Verify that the 0.0.0.0/0 route in the route table for the web server subnet points to the virtual security appliance.
• D) Verify the registered targets in the ALB.
• E) Verify that the 0.0.0.0/0 route in the public subnet points to a NAT gateway.

---

Definitions:

Chi-Square

A statistical test used to determine if there's a significant association between two categorical variables.

Row Variable

A variable whose values are presented in rows within a table or matrix, often used in data analysis to compare categories horizontally.

Column Variable

A variable in data represented by columns in a table, often used in statistical analyses to differentiate groups or conditions.

Critical Value

A threshold value that defines the boundary of the critical region, where if the test statistic exceeds this value, the null hypothesis is rejected.