SCS-C02 GUIDE TORRENT: AWS CERTIFIED SECURITY - SPECIALTY & AWS CERTIFIED SECURITY - SPECIALTY DUMPS VCE

SCS-C02 Guide Torrent: AWS Certified Security - Specialty & AWS Certified Security - Specialty Dumps VCE

SCS-C02 Guide Torrent: AWS Certified Security - Specialty & AWS Certified Security - Specialty Dumps VCE

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Amazon AWS Certified Security - Specialty Sample Questions (Q40-Q45):

NEW QUESTION # 40
A Systems Engineer is troubleshooting the connectivity of a test environment that includes a virtual security appliance deployed inline. In addition to using the virtual security appliance, the Development team wants to use security groups and network ACLs to accomplish various security requirements in the environment.
What configuration is necessary to allow the virtual security appliance to route the traffic?

  • A. Place the security appliance in the public subnet with the internet gateway
  • B. Disable the Network Source/Destination check on the security appliance's elastic network interface
  • C. Disable network ACLs.
  • D. Configure the security appliance's elastic network interface for promiscuous mode.

Answer: B

Explanation:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#eni-basics Source/destination checking "You must disable source/destination checks if the instance runs services such as network address translation, routing, or firewalls." The correct answer is C. Disable the Network Source/Destination check on the security appliance's elastic network interface.
This answer is correct because disabling the Network Source/Destination check allows the virtual security appliance to route traffic that is not addressed to or from itself. By default, this check is enabled on all EC2 instances, and it prevents them from forwarding traffic that does not match their own IP or MAC addresses.
However, for a virtual security appliance that acts as a router or a firewall, this check needs to be disabled, otherwise it will drop the traffic that it is supposed to route12.
The other options are incorrect because:
* A. Disabling network ACLs is not a solution, because network ACLs are optional layers of security for the subnets in a VPC. They can be used to allow or deny traffic based on IP addresses and ports, but they do not affect the routing behavior of the virtual security appliance3.
* B. Configuring the security appliance's elastic network interface for promiscuous mode is not a solution, because promiscuous mode is a mode for a network interface that causes it to pass all traffic it receives to the CPU, rather than passing only the frames that it is programmed to receive. Promiscuous mode is normally used for packet sniffing or monitoring, but it does not enable the network interface to route traffic4.
* D. Placing the security appliance in the public subnet with the internet gateway is not a solution, because it does not address the routing issue of the virtual security appliance. The security appliance can be placed in either a public or a private subnet, depending on the network design and security requirements, but it still needs to have the Network Source/Destination check disabled to route traffic properly5.
References:
1: Enabling or disabling source/destination checks - Amazon Elastic Compute Cloud 2: Virtual security appliance - Wikipedia 3: Network ACLs - Amazon Virtual Private Cloud 4: Promiscuous mode - Wikipedia
5: NAT instances - Amazon Virtual Private Cloud


NEW QUESTION # 41
A company needs to implement DNS Security Extensions (DNSSEC) for a specific subdomain. The subdomain is already registered with Amazon Route 53. A security engineer has enabled DNSSEC signing and has created a key-signing key (KSK). When the security engineer tries to test the configuration, the security engineer receives an error for a broken trust chain.
What should the security engineer do to resolve this error?

  • A. Replace the KSK with a zone-signing key (ZSK).
  • B. Deactivate and then activate the KSK.
  • C. Create a Delegation Signer (DS) record in the subdomain.
  • D. Create a Delegation Signer (DS) record in the parent hosted zone.

Answer: D

Explanation:
When implementing DNSSEC for a subdomain in Amazon Route 53 and encountering a broken trust chain error, creating a Delegation Signer (DS) record in the parent hosted zone is the correct approach. The DS record is essential for establishing the trust chain between the parent and child zones by linking the DNSSEC-signed subdomain to its parent domain. This step is crucial for DNS resolvers to validate the authenticity of DNS responses, thereby resolving the broken trust chain issue and ensuring the integrity and authenticity of the DNS data for the secured subdomain.


NEW QUESTION # 42
There are currently multiple applications hosted in a VPC. During monitoring it has been noticed that multiple port scans are coming in from a specific IP Address block. The internal security team has requested that all offending IP Addresses be denied for the next 24 hours. Which of the following is the best method to quickly and temporarily deny access from the specified IP Address's.
Please select:

  • A. Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP Address block.
  • B. Create an AD policy to modify the Windows Firewall settings on all hosts in the VPC to deny access from the IP Address block.
  • C. Add a rule to all of the VPC Security Groups to deny access from the IP Address block.
  • D. Modify the Windows Firewall settings on all AMI'S that your organization uses in that VPC to deny access from the IP address block.

Answer: A

Explanation:
Explanation
NACL acts as a firewall at the subnet level of the VPC and we can deny the offending IP address block at the subnet level using NACL rules to block the incoming traffic to the VPC instances. Since NACL rules are applied as per the Rule numbers make sure that this rule number should take precedence over other rule numbers if there are any such rules that will allow traffic from these IP ranges. The lowest rule number has more precedence over a rule that has a higher number.
The IAM Documentation mentions the following as a best practices for IAM users For extra security, enable multi-factor authentication (MFA) for privileged IAM users (users who are allowed access to sensitive resources or APIs). With MFA, users have a device that generates a unique authentication code (a one-time password, or OTP). Users must provide both their normal credentials (like their user name and password) and the OTP. The MFA device can either be a special piece of hardware, or it can be a virtual device (for example, it can run in an app on a smartphone).
Options C is invalid because these options are not available
Option D is invalid because there is not root access for users
For more information on IAM best practices, please visit the below URL:
https://docs.IAM.amazon.com/IAM/latest/UserGuide/best-practices.html
The correct answer is: Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP Address block.
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NEW QUESTION # 43
A company has deployed servers on Amazon EC2 instances in a VPC. External vendors access these servers over the internet. Recently, the company deployed a new application on EC2 instances in a new CIDR range.
The company needs to make the application available to the vendors.
A security engineer verified that the associated security groups and network ACLs are allowing the required ports in the inbound diction. However, the vendors cannot connect to the application.
Which solution will provide the vendors access to the application?

  • A. Modify the network ACL that is associated with the CIDR range to have the same outbound rules as inbound rules.
  • B. Modify the security group that is associated with the EC2 instances to have the same outbound rules as inbound rules.
  • C. Modify the inbound rules on the internet gateway to allow the required ports.
  • D. Modify the network ACL that is associated with the CIDR range to allow outbound traffic to ephemeral ports.

Answer: D

Explanation:
Explanation
The correct answer is B. Modify the network ACL that is associated with the CIDR range to allow outbound traffic to ephemeral ports.
This answer is correct because network ACLs are stateless, which means that they do not automatically allow return traffic for inbound connections. Therefore, the network ACL that is associated with the CIDR range of the new application must have outbound rules that allow traffic to ephemeral ports, which are the temporary ports used by the vendors' machines to communicate with the application servers. Ephemeral ports are typically in the range of 1024-655351. If the network ACL does not have such rules, the vendors will not be able to connect to the application.
The other options are incorrect because:
A: Modifying the security group that is associated with the EC2 instances to have the same outbound rules as inbound rules is not a solution, because security groups are stateful, which means that they automatically allow return traffic for inbound connections. Therefore, there is no need to add outbound rules to the security group for the vendors to access the application2.
C; Modifying the inbound rules on the internet gateway to allow the required ports is not a solution, because internet gateways do not have inbound or outbound rules. Internet gateways are VPC components that enable communication between instances in a VPC and the internet. They do not filter traffic based on ports or protocols3.
D: Modifying the network ACL that is associated with the CIDR range to have the same outbound rules as inbound rules is not a solution, because it does not address the issue of ephemeral ports. The outbound rules of the network ACL must match the ephemeral port range of the vendors' machines, not necessarily the inbound rules of the network ACL4.
References:
1: Ephemeral port - Wikipedia 2: Security groups for your VPC - Amazon Virtual Private Cloud 3: Internet gateways - Amazon Virtual Private Cloud 4: Network ACLs - Amazon Virtual Private Cloud


NEW QUESTION # 44
A company hosts a web application on an Apache web server. The application runs on Amazon EC2 instances that are in an Auto Scaling group. The company configured the EC2 instances to send the Apache web server logs to an Amazon CloudWatch Logs group that the company has configured to expire after 1 year.
Recently, the company discovered in the Apache web server logs that a specific IP address is sending suspicious requests to the web application. A security engineer wants to analyze the past week of Apache web server logs to determine how many requests that the IP address sent and the corresponding URLs that the IP address requested.
What should the security engineer do to meet these requirements with the LEAST effort?

  • A. Configure a CloudWatch Logs subscription to stream the log group to an Am-azon OpenSearch Service cluster. Use OpenSearch Service to analyze the logs for the specific IP address and the requested URLs.
  • B. Export the CloudWatch Logs group data to Amazon S3. Use Amazon Macie to query the logs for the specific IP address and the requested URLs.
  • C. Export the CloudWatch Logs group data to Amazon S3. Use AWS Glue to crawl the S3 bucket for only the log entries that contain the specific IP ad-dress. Use AWS Glue to view the results.
  • D. Use CloudWatch Logs Insights and a custom query syntax to analyze the CloudWatch logs for the specific IP address and the requested URLs.

Answer: D


NEW QUESTION # 45
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