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Exam AWS Certified Solutions Architect - Professional topic 1 question 796 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional

Question #: 796
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

A company uses a load balancer to distribute traffic to Amazon EC2 instances in a single Availability Zone. The company is concerned about security and wants a solutions architect to re-architect the solution to meet the following requirements:
✑ Inbound requests must be filtered for common vulnerability attacks.
✑ Rejected requests must be sent to a third-party auditing application.
✑ All resources should be highly available.
Which solution meets these requirements?

A. Configure a Multi-AZ Auto Scaling group using the application's AMI. Create an Application Load Balancer (ALB) and select the previously created Auto Scaling group as the target. Use Amazon Inspector to monitor traffic to the ALB and EC2 instances. Create a web ACL in WAF. Create an AWS WAF using the web ACL and ALB. Use an AWS Lambda function to frequently push the Amazon Inspector report to the third-party auditing application
B. Configure an Application Load Balancer (ALB) and add the EC2 instances as targets. Create a web ACL in WAF. Create an AWS WAF using the web ACL and ALB name and enable logging with Amazon CloudWatch Logs. Use an AWS Lambda function to frequently push the logs to the third-party auditing application.
C. Configure an Application Load Balancer (ALB) along with a target group adding the EC2 instances as targets. Create an Amazon Kinesis Data Firehose with the destination of the third-party auditing application. Create a web ACL in WAF. Create an AWS WAF using the web ACL and ALB then enable logging by selecting the Kinesis Data Firehose as the destination. Subscribe to AWS Managed Rules in AWS Marketplace, choosing the WAF as the subscriber.
D. Configure a Multi-AZ Auto Scaling group using the application's AMI Create an Application Load Balancer (ALB) and select the previously created Auto Scaling group as the target. Create an Amazon Kinesis Data Firehose with a destination of the third-party auditing application. Create a web ACL in WAF. Create an AWS WAF using the web ACL and ALB then enable logging by selecting the Kinesis Data Firehose as the destination. Subscribe to AWS Managed Rules in AWS Marketplace, choosing the WAF as the subscriber.

Show Suggested Answer

Suggested Answer: D 🗳️

by techn00b at Dec. 29, 2021, 4:03 a.m.

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Comments

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nsvijay04b1

2 years, 9 months ago

Selected Answer: D

B/C doesn't make sense. Between A & D , the Answer is 'D'. why ? 1. As WAF is front end , it is responsible for threats not ALB or EC2, its too late for threat analysis. 2. Inspector doesn't analyse ALB but EC2, ECR 3. WAF logging integrates with S3, KDF, Cloudwatch where as ALB access logs with S3 (no KDF) 4. WAF marketplace rules help threat detection

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Vinafec

2 years, 10 months ago

D almost looks good, but doesn't specify whether the third-party application is a supported target for Firehose. Or am I missing something?

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JohnPi

2 years, 10 months ago

Selected Answer: D

ALB logs go to S3 and WAF logs stream to Firehose

upvoted 1 times

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dcdcdc3

2 years, 10 months ago

Selected Answer: D

why subscribe to managed WAF rules in marketplace: https://docs.aws.amazon.com/waf/latest/developerguide/marketplace-managed-rule-groups.html

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Yashar1691

2 years, 11 months ago

Selected Answer: A

A is correct

upvoted 2 times

Byrney

2 years, 9 months ago

Inspector scans EC2 instances, it won't detect if a request was blocked by WAF at the ALB

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gnic

2 years, 11 months ago

Selected Answer: A

It's A, you don't need Firehose here. https://docs.aws.amazon.com/inspector/v1/userguide/inspector_network-reachability.html

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foureye2004

3 years ago

Just wonder why "Subscribe to AWS Managed Rules in AWS Marketplace" in option D

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hilft

3 years ago

Do you need firehose for this task? you don't need anything real-time

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asfsdfsdf

3 years, 1 month ago

Selected Answer: D

A or D since the requirement here is for HA. Why not A? Amazon inspector is not for analyzing traffic from ALB - better to stream the ALB logging data to splunk and analyze it there.

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aandc

3 years, 1 month ago

vote D

upvoted 1 times

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roka_ua

3 years, 4 months ago

Selected Answer: D

Vote D

upvoted 1 times

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shotty1

3 years, 6 months ago

Selected Answer: D

I think it is D

upvoted 2 times

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yvinisiupacuando

3 years, 7 months ago

Selected Answer: D

Firstly I doubt between A and B but in fact that is true that Amazon Inspector cannot monitor ALB traffic, it can only monitor EC2 activity so, this fact discards A, I'll go with D

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tkanmani76

3 years, 7 months ago

D is right - KDF can have 3rd party apps as destination - https://docs.aws.amazon.com/firehose/latest/dev/create-destination.html

upvoted 2 times

tkanmani76

3 years, 7 months ago

Additionally while A looks to be valid considering AWS Inspector can be deployed for scanning vulnerabilities, it supports only EC2. However choice A mentions - " Use Amazon Inspector to monitor traffic to the ALB and EC2 instances" - ALB is not supported by Inspector - hence Option A is invalid. https://aws.amazon.com/inspector/faqs/?nc=sn&loc=6

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