SAA-C01 Free Practice Test

A user is sending a custom metric to CloudWatch. If the call to the CloudWatch APIs has different dimensions, but the same metric name, how will CloudWatch treat all the requests?

1. A. It will treat each unique combination of dimensions as a separate metric.
2. B. It will group all the calls into a single call.
3. C. It will overwrite the previous dimension data with the new dimension data.
4. D. It will reject the request as there cannot be a separate dimension for a single metri

Correct Answer: A
A dimension is a key-value pair used to uniquely identify a metric. CloudWatch treats each unique combination of dimensions as a separate metric. Thus, if the user is making 4 calls with the same metric name but a separate dimension, it will create 4 separate metrics. http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/cloudwatch_concepts.ht ml

You launch an Amazon EC2 instance without an assigned AWS identity and Access Management (IAM) role. Later, you decide that the instance should be running with an IAM role. Which action must you take in order to have a running Amazon EC2 instance with an IAM role assigned to it?

1. A. Create an image of the instance, and register the image with an IAM role assigned and an Amazon EBS volume mapping.
2. B. Create a new IAM role with the same permissions as an existing IAM role, and assign it to the running instance.
3. C. Create an image of the instance, add a new IAM role with the same permissions as the desired IAM role, and deregister the image with the new role assigned.
4. D. Create an image of the instance, and use this image to launch a new instance with the desired IAM role assigned.

Correct Answer: D

Which set of Amazon S3 features helps to prevent and recover from accidental data loss?

1. A. Object lifecycle and service access logging
2. B. Object versioning and Multi-factor authentication
3. C. Access controls and server-side encryption
4. D. Website hosting and Amazon S3 policies

Correct Answer: B
Versioning-enabled buckets enable you to recover objects from accidental deletion or overwrite. In addition to that, they have made it a requirement that delete operations on versioned data can only be done using MFA (Multi factor authentication).

Can I initiate a "forced failover" for my Oracle Multi-AZ DB Instance deployment?

1. A. Yes
2. B. Only in certain regions
3. C. Only in VPC
4. D. No

Correct Answer: A
https://aws.amazon.com/public-data-sets/
If your DB instance is a Multi-AZ deployment, you can force a failover from one availability zone to another when you select the Reboot option. When you force a failover of your DB instance, Amazon RDS automatically switches to a standby replica in another Availability Zone and updates the DNS record for the DB instance to point to the standby DB instance. As a result, you will need to clean up and re-establish any existing connections to your DB instance. Reboot with failover is beneficial when you want to simulate a failure of a DB instance for testing, or restore operations to the original AZ after a failover occurs.
Source: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_RebootInstance.html

Spot instances are ideally designed for which purpose below?

1. A. Running database instances that can scale up and down based on a specific workload.
2. B. Running long duration and highly transactional applications.
3. C. For building distributed fault tolerant databases under a tight deadline.
4. D. Taking advantage of excess EC2 capacity at prices below standard on-demand rates, for short duration jobs.

Correct Answer: D
There are four general categories of time-filexible and interruption-tolerant tasks that work well with Spot Instances: Delay able tasks, Optional tasks, Tasks that can be sped up by adding additional computing power and at the end, Tasks that require a large number of compute instances that you can\'t access any other way.
http://aws.amazon.com/ec2/spot-instances/