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SCS-C01 PDF DEMO:
QUESTION NO: 1
Your company currently has a set of EC2 Instances hosted in a VPC. The IT Security department is suspecting a possible DDos attack on the instances. What can you do to zero in on the IP addresses which are receiving a flurry of requests.
Please select:
A. Use AWS Cloud trail to get the IP addresses accessing the EC2 Instances
B. Use AWS Trusted Advisor to get the IP addresses accessing the EC2 Instances
C. Use VPC Flow logs to get the IP addresses accessing the EC2 Instances
D. Use AWS Config to get the IP addresses accessing the EC2 Instances
Answer: C
Explanation
With VPC Flow logs you can get the list of IP addresses which are hitting the Instances in your VPC
You can then use the information in the logs to see which external IP addresses are sending a flurry of requests which could be the potential threat foi a DDos attack.
Option B is incorrect Cloud Trail records AWS API calls for your account. VPC FLowlogs logs network traffic for VPC, subnets. Network interfaces etc.
As per AWS,
VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC where as AWS CloudTrail, is a service that captures API calls and delivers the log files to an Amazon S3 bucket that you specify.
Option C is invalid this is a config service and will not be able to get the IP addresses Option D is invalid because this is a recommendation service and will not be able to get the IP addresses For more information on VPC Flow Logs, please visit the following URL:
https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/flow-logs.html
The correct answer is: Use VPC Flow logs to get the IP addresses accessing the EC2 Instances Submit your Feedback/Queries to our Experts
QUESTION NO: 2
You have an Ec2 Instance in a private subnet which needs to access the KMS service. Which of the following methods can help fulfil this requirement, keeping security in perspective Please select:
A. Use a VPC endpoint
B. Use VPC Peering
C. Attach an Internet gateway to the subnet
D. Attach a VPN connection to the VPC
Answer: A
Explanation
The AWS Documentation mentions the following
You can connect directly to AWS KMS through a private endpoint in your VPC instead of connecting over the internet.
When you use a VPC endpoint communication between your VPC and AWS KMS is conducted entirely within the AWS network.
Option B is invalid because this could open threats from the internet
Option C is invalid because this is normally used for communication between on-premise environments and AWS.
Option D is invalid because this is normally used for communication between VPCs For more information on accessing KMS via an endpoint, please visit the following URL
https://docs.aws.amazon.com/kms/latest/developerguide/kms-vpc-endpoint.html
The correct answer is: Use a VPC endpoint Submit your Feedback/Queries to our Experts
QUESTION NO: 3
You have a set of 100 EC2 Instances in an AWS account. You need to ensure that all of these instances are patched and kept to date. All of the instances are in a private subnet. How can you achieve this. Choose 2 answers from the options given below Please select:
A. Ensure an internet gateway is present to download the updates
B. Ensure a NAT gateway is present to download the updates
C. Use the AWS inspector to patch the updates
D. Use the Systems Manager to patch the instances
Answer: B,D
Explanation
Option C is invalid because the instances need to remain in the private:
Option D is invalid because AWS inspector can only detect the patches
One of the AWS Blogs mentions how patching of Linux servers can be accomplished. Below is the diagram representation of the architecture setup
For more information on patching Linux workloads in AWS, please refer to the Lin.
https://aws.amazon.com/blogs/security/how-to-patch-linux-workloads-on-awsj
The correct answers are: Ensure a NAT gateway is present to download the updates. Use the Systems
Manager to patch the instances Submit your Feedback/Queries to our Experts
QUESTION NO: 4
A company uses AWS Organization to manage 50 AWS accounts. The finance staff members log in as AWS IAM users in the FinanceDept AWS account. The staff members need to read the consolidated billing information in the MasterPayer AWS account. They should not be able to view any other resources in the MasterPayer AWS account. IAM access to billing has been enabled in the
MasterPayer account.
Which of the following approaches grants the finance staff the permissions they require without granting any unnecessary permissions?
A. Create an IAM group for the finance users in the MasterPayer account, then attach the AWS managed ReadOnlyAccess IAM policy to the group.
B. Create an IAM group for the finance users in the FinanceDept account, then attach the AWS managed ReadOnlyAccess IAM policy to the group.
C. Create an AWS IAM role in the FinanceDept account with the ViewBilling permission, then grant the finance users in the MasterPayer account the permission to assume that role.
D. Create an AWS IAM role in the MasterPayer account with the ViewBilling permission, then grant the finance users in the FinanceDept account the permission to assume that role.
Answer: D
QUESTION NO: 5
An application is designed to run on an EC2 Instance. The applications needs to work with an
S3 bucket. From a security perspective , what is the ideal way for the EC2 instance/ application to be configured?
Please select:
A. Assign an 1AM user to the application that has specific access to only that S3 bucket
B. Assign an 1AM Role and assign it to the EC2 Instance
C. Use the AWS access keys ensuring that they are frequently rotated.
D. Assign an 1AM group and assign it to the EC2 Instance
Answer: B
Explanation
The below diagram from the AWS whitepaper shows the best security practicse of allocating a role that has access to the S3 bucket
Options A,B and D are invalid because using users, groups or access keys is an invalid security practise when giving access to resources from other AWS resources.
For more information on the Security Best practices, please visit the following URL:
https://d1.awsstatic.com/whitepapers/Security/AWS
Security Best Practices.pdl The correct answer is: Assign an 1AM Role and assign it to the EC2
Instance Submit your Feedback/Queries to our Experts
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Updated: May 28, 2022