ExamGecko
Search Search Login
Home Home / Amazon / SCS-C01
Question list
Search
Search

List of questions

Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

A Security Administrator is configuring an Amazon S3 bucket and must meet the following security requirements: Encryption in transit Encryption at rest Logging of all object retrievals in AWS CloudTrail Which of the following meet these security requirements? (Choose three.)
A company's cloud operations team is responsible for building effective security for AWS crossaccount access. The team asks a security engineer to help troubleshoot why some developers in the developer account (123456789012) in the developers group are not able to assume a cross-account role (ReadS3) into a production account (999999999999) to read the contents of an Amazon S3 bucket (productionapp). The two account policies are as follows: Which recommendations should the security engineer make to resolve this issue? (Select TWO.)
A security engineer needs to configure monitoring and auditing for AWS Lambda. Which combination of actions using AWS services should the security engineer take to accomplish this goal? (Select TWO.)
A security engineer recently rotated the host keys for an Amazon EC2 instance. The security engineer is trying to access the EC2 instance by using the EC2 Instance. Connect feature. However, the security engineer receives an error (or failed host key validation. Before the rotation of the host keys EC2 Instance Connect worked correctly with this EC2 instance. What should the security engineer do to resolve this error?
A company’s information security team wants to analyze Amazon EC2 performance and utilization data in the near-real time for anomalies. A Sec Engineer is responsible for log aggregation. The Engineer must collect logs from all of the company’s AWS accounts in centralized location to perform the analysis. How should the Security Engineer do this? Log in to each account four te a day and filter the AWS CloudTrail log data, then copy and paste the logs in to the Amazon S3 bucket in the destination account.
A company has an encrypted Amazon Aurora DB cluster in the us-east-1 Region. The DB cluster is encrypted with an AWS Key Management Service (AWS KMS) customer managed key. To meet compliance requirements, the company needs to copy a DB snapshot to the us-west-1 Region. However, when the company tries to copy the snapshot to us-west-1 the company cannot access the key that was used to encrypt the original database. What should the company do to set up the snapshot in us-west-1 with proper encryption?
A company has two AW5 accounts within AWS Organizations. In Account-1. Amazon EC2 Auto Scaling is launched using a service-linked role. In Account-2. Amazon EBS volumes are encrypted with an AWS KMS key A Security Engineer needs to ensure that the service-linked role can launch instances with these encrypted volumes Which combination of steps should the Security Engineer take in both accounts? (Select TWO.)
A company's Security Team received an email notification from the Amazon EC2 Abuse team that one or more of the company's Amazon EC2 instances may have been compromised Which combination of actions should the Security team take to respond to (be current modem? (Select TWO.)
A company's web application is hosted on Amazon EC2 instances running behind an Application Load Balancer (ALB) in an Auto Scaling group. An AWS WAF web ACL is associated with the ALB. AWS CloudTrail is enabled, and stores logs in Amazon S3 and Amazon CloudWatch Logs. The operations team has observed some EC2 instances reboot at random. After rebooting, all access logs on the instances have been deleted. During an investigation, the operations team found that each reboot happened just after a PHP error occurred on the new-user-creation.php file. The operations team needs to view log information to determine if the company is being attacked. Which set of actions will identify the suspect attacker's IP address for future occurrences?
A security engineer has noticed an unusually high amount of traffic coming from a single IP address. This was discovered by analyzing the Application Load Balancer's access logs. How can the security engineer limit the number of requests from a specific IP address without blocking the IP address?

Question 426 - SCS-C01 discussion

Report
Export

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.
Create an AD policy to modify the Windows Firewall settings on all hosts in the VPC to deny access from the IP Address block.
Answers
A.
Create an AD policy to modify the Windows Firewall settings on all hosts in the VPC to deny access from the IP Address block.
B.
Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP Address block.
Answers
B.
Modify the Network ACLs associated with all public subnets 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.
Answers
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.
Answers
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.
Suggested answer: B

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 AWS 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.aws.amazon.com/IAM/latest/UserGuide/best-practices.htmlThe correct answer is: Modify the Network ACLs associated with all public subnets in the VPC to denyaccess from the IP Address block.omit your Feedback/Queries to our Experts

Show Answer
asked 16/09/2024
Natcha Koopipat
42 questions
PreviousPreviousNextNext
User
Your answer:
0 comments
Sorted by

Leave a comment first

ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms