AWS-Solution-Architect-Associate Exam
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Q21. What happens to Amazon EBS root device volumes, by default, when an instance terminates?
A. Amazon EBS root device volumes are moved to IAM.
B. Amazon EBS root device volumes are copied into Amazon RDS.
C. Amazon EBS root device volumes are automatically deleted.
D. Amazon EBS root device volumes remain in the database until you delete them.
Answer: C
Explanation:
By default, Amazon EBS root device volumes are automatically deleted when the instance terminates. Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/terminating-instances.html
Q22. While launching an RDS DB instance, on which page I can select the Availability Zone?
A. REVIEW
B. DB INSTANCE DETAILS
C. MANAGEMENT OPTIONS
D. ADDITIONAL CONFIGURATION
Answer: D
Q23. You are planning and configuring some EBS volumes for an application. In order to get the most performance out of your EBS volumes, you should attach them to an instance with enough to support your volumes.
A. Redundancy
B. Storage
C. Bandwidth
D. Memory
Answer: C
Explanation:
When you plan and configure EBS volumes for your application, it is important to consider the configuration of the instances that you will attach the volumes to. In order to get the most performance out of your EBS volumes, you should attach them to an instance with enough bandwidth to support your volumes, such as an EBS-optimized instance or an instance with 10 Gigabit network connectMty. This is especially important when you use General Purpose (SSD) or Provisioned IOPS (SSD) volumes, or when you stripe multiple volumes together in a RAID configuration.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-ec2-config.htmI
Q24. In EC2, what happens to the data in an instance store if an instance reboots (either intentionally or unintentionally)?
A. Data is deleted from the instance store for security reasons.
B. Data persists in the instance store.
C. Data is partially present in the instance store.
D. Data in the instance store will be lost.
Answer: B
Explanation:
The data in an instance store persists only during the lifetime of its associated instance. If an instance reboots (intentionally or unintentionally), data in the instance store persists. However, data on instance store volumes is lost under the following circumstances.
Failure of an underlying drive
Stopping an Amazon EBS-backed instance Terminating an instance
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/InstanceStorage.html
Q25. Fill in the blanks: _ let you categorize your EC2 resources in different ways, for example, by purpose, owner, or environment.
A. wildcards
B. pointers
C. Tags
D. special filters
Answer: C
Q26. What is the maximum write throughput I can provision for a single Dynamic DB table?
A. 1,000 write capacity units
B. 100,000 write capacity units
C. Dynamic DB is designed to scale without limits, but if you go beyond 10,000 you have to contact AWS first.
D. 10,000 write capacity units
Answer: C
Q27. What does specifying the mapping /dev/sdc=none when launching an instance do'?
A. Prevents /dev/sdc from creating the instance.
B. Prevents /dev/sdc from deleting the instance.
C. Set the value of /dev/sdc to 'zero'.
D. Prevents /dev/sdc from attaching to the instance.
Answer: D
Q28. You have recently joined a startup company building sensors to measure street noise and air quality in urban areas. The company has been running a pilot deployment of around 100 sensors for 3 months each sensor uploads 1KB of sensor data every minute to a backend hosted on AWS.
During the pilot, you measured a peak or 10 IOPS on the database, and you stored an average of 3GB of sensor data per month in the database.
The current deployment consists of a load-balanced auto scaled Ingestion layer using EC2 instances and a PostgreSQL RDS database with 500GB standard storage.
The pilot is considered a success and your CEO has managed to get the attention or some potential investors. The business plan requires a deployment of at least IOOK sensors which needs to be supported by the backend. You also need to store sensor data for at least two years to be able to compare year over year Improvements.
To secure funding, you have to make sure that the platform meets these requirements and leaves room for further scaling. Which setup win meet the requirements?
A. Add an SQS queue to the ingestion layer to buffer writes to the RDS instance
B. Ingest data into a DynamoDB table and move old data to a Redshift cluster
C. Replace the RDS instance with a 6 node Redshift cluster with 96TB of storage
D. Keep the current architecture but upgrade RDS storage to 3TB and IOK provisioned IOPS
Answer: C
Q29. When you view the block device mapping for your instance, you can see only the EBS volumes, not the instance store volumes.
A. Depends on the instance type
B. FALSE
C. Depends on whether you use API call
D. TRUE
Answer: D
Q30. Provisioned IOPS Costs: you are charged for the IOPS and storage whether or not you use them in a given month.
A. FALSE
B. TRUE
Answer: B