You run a web application with the following components Elastic Load Balancer (EL8), 3 Web/Application servers, 1 MySQL RDS database with read replicas, and
Amazon Simple Storage Service (Amazon S3) for static content. Average response time for users is increasing slowly.
What three CloudWatch RDS metrics will allow you to identify if the database is the bottleneck? (Choose three.)
ABD
Which method can be used to prevent an IP address block from accessing public objects in an S3 bucket?
A
Reference:
http://docs.aws.amazon.com/AmazonS3/latest/dev/example-bucket-policies.html
Your organization is preparing for a security assessment of your use of AWS.
In preparation for this assessment, which two IAM best practices should you consider implementing? (Choose two.)
BC
Reference:
http://docs.aws.amazon.com/AmazonS3/latest/dev/example-bucket-policies.html
Your business is building a new application that will store its entire customer database on a RDS MySQL database, and will have various applications and users that will query that data for different purposes.
Large analytics jobs on the database are likely to cause other applications to not be able to get the query results they need to, before time out. Also, as your data grows, these analytics jobs will start to take more time, increasing the negative effect on the other applications.
How do you solve the contention issues between these different workloads on the same data?
C
https://aws.amazon.com/rds/details/read-replicas/
What would happen to an RDS (Relational Database Service) multi-Availability Zone deployment if the primary DB instance fails?
C
Failover Process for Amazon RDS:
In the event of a planned or unplanned outage of your DB instance, Amazon RDS automatically switches to a standby replica in another Availability Zone if you have enabled Multi-AZ. The time it takes for the failover to complete depends on the database activity and other conditions at the time the primary DB instance became unavailable.
The failover mechanism automatically changes the DNS record of the DB instance to point to the standby DB instance. As a result, you will need to re-establish any existing connections to your DB instance.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
When you put objects in Amazon S3, what is the indication that an object was successfully stored?
C
There are two opportunities for a copy request to return an error. One can occur when Amazon S3 receives the copy request and the other can occur while
Amazon S3 is copying the files. If the error occurs before the copy operation starts, you receive a standard Amazon S3 error. If the error occurs during the copy operation, the error response is embedded in the 200 OK response. This means that a 200 OK response can contain either a success or an error. Make sure to design your application to parse the contents of the response and handle it appropriately.
If the copy is successful, you receive a response that contains the information about the copied object.
How can an EBS volume that is currently attached to an EC2 instance be migrated from one Availability Zone to another?
C
These snapshots can be used to create multiple new EBS volumes, expand the size of a volume, or move volumes across Availability Zone
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumes.html
You have a business-to-business web application running in a VPC consisting of an Elastic Load Balancer (ELB), web servers, application servers and a database. Your web application should only accept traffic from pre-defined customer IP addresses.
Which two options meet this security requirement? (Choose two.)
AB
How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?
A
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.htm
The compliance department within your multi-national organization requires that all data for your customers that reside in the European Union (EU) must not leave the EU and also data for customers that reside in the US must not leave the US without explicit authorization.
What must you do to comply with this requirement for a web based profile management application running on EC2?
C
