CLF-C02 Storage Services 5

Question 1

Which S3 storage class stores data in only one Availability Zone, providing lower cost but reduced durability?

Accepted Answer

S3 One Zone-IA

Answer

S3 One Zone-IA stores data in a single AZ at 20% lower cost than Standard-IA, but data is lost if the AZ is destroyed.

Question 2

A company needs to maintain copies of S3 objects in a different AWS Region for disaster recovery. Which feature supports this?

Accepted Answer

S3 Cross-Region Replication

Answer

S3 Cross-Region Replication (CRR) automatically copies objects from a source bucket to a destination bucket in a different AWS Region.

Question 3

Which AWS service allows on-premises backup software to store data in AWS using an iSCSI block storage interface?

Accepted Answer

Volume Gateway

Answer

Volume Gateway presents iSCSI block storage volumes to on-premises applications, backed by Amazon S3 with optional EBS snapshots.

Question 4

What durability does Amazon S3 Standard guarantee for stored objects?

Accepted Answer

99.999999999% (eleven nines)

Answer

Amazon S3 is designed for 99.999999999% (11 nines) durability by redundantly storing data across multiple AZs within a Region.

Question 5

Which EBS volume type is best suited for a big data analytics workload requiring high sequential throughput rather than high IOPS?

Accepted Answer

st1 (Throughput Optimized HDD)

Answer

st1 (Throughput Optimized HDD) is designed for large, sequential workloads like big data, data warehouses, and log processing at low cost.

(CLF-C02) AWS Certified Cloud Practitioner Practice Test