Practice Test 2 | AWS Certified Cloud Practitioner | CLF-C01 | Dumps | Mock Test

Answer: B

• Option A is incorrect. RDS provides both automatic backup and user-initiated Point-In-Time snapshots for maintaining reliability. Automatic backups are performed during the backup window of the DB instance as defined during database creation. A storage volume snapshot of the DB instance is created that backs up the entire DB instance and not just the individual databases. RDS database backups are stored in S3 & are priced at $0.095 per GB month.
• Option B is CORRECT. AWS works hard for driving down costs allowing customers to reap its benefits. There are no Inbound data transfer charges across all services in all regions. This means that customers can upload petabytes of data to storage destinations like S3 without paying inbound data transfer fees. Data transfers from On-premise to AWS cloud will also not incur Transfer charges.
• Option C is incorrect. EBS snapshots are stored in S3 that will incur storage costs depending on their size & retention policy of S3. EBS snapshots incur $0.05 per GB-Month of data stored.
• Option D is incorrect. Outbound data transfers from AWS services are subject to costs depending on different parameters, like Data transfers from services within AZ’s in a region, Data transfers from services across regions, and Data transfers from services to the Internet. Outbound Data transfer prices also vary based on the Region. Data transfers can be costly for Re-hosted applications on AWS that may not be configured or aligned with AWS optimized features. For example, data transfer through a VPC endpoint can be secure & cheaper compared to routing it through the internet. Hybrid cloud architectures need to specifically account for data transfers between the On-Premise & Cloud resources that may become spiky on the billing front.

References:

• https://aws.amazon.com/backup/pricing/
• https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithAutomatedBackups.html
• https://www.cloudmanagementinsider.com/data-transfer-costs-everything-you-need-to-know/
• https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html
• https://aws.amazon.com/ebs/pricing/