This set of Interview Questions & Answers focuses on “Amazon S3 – Simple Storage Services”.
1. Which of the following is a method for bidding on unused EC2 capacity based on the current spot price?
a) On-Demand Instance
b) Reserved Instances
c) Spot Instance
d) All of the mentioned
View Answer
Explanation: This feature offers a significantly lower price, but it varies over time or may not be available when there is no excess capacity.
2. Point out the wrong statement.
a) The standard instances are not suitable for standard server applications
b) High memory instances are useful for large data throughput applications such as SQL Server databases and data caching and retrieval
c) FPS is exposed as an API that sorts transactions into packages called Quick Starts that makes it easy to implement
d) None of the mentioned
View Answer
Explanation: The standard instances are deemed to be suitable for standard server applications.
3. Which of the following instance has an hourly rate with no long-term commitment?
a) On-Demand Instance
b) Reserved Instances
c) Spot Instance
d) All of the mentioned
View Answer
Explanation: Pricing varies by zone, instance, and pricing model.
4. Which of the following is a batch processing application?
a) IBM sMash
b) IBM WebSphere Application Server
c) Condor
d) Windows Media Server
View Answer
Explanation: Condor is a powerful, distributed batch-processing system that lets you use otherwise idle CPU cycles in a cluster of workstations.
5. Point out the correct statement.
a) Security can be set through passwords, Kerberos tickets, or certificates
b) Secure access to your EC2 AMIs is controlled by passwords, Kerberos, and 509 Certificates
c) Most of the system image templates that Amazon AWS offers are based on Red Hat Linux
d) All of the mentioned
View Answer
Explanation: Hundreds of free and paid AMIs can be found on AWS.
6. How many EC2 service zones or regions exist?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: There are four different EC2 service zones or regions.
7. Amazon ______ cloud-based storage system allows you to store data objects ranging in size from 1 byte up to 5GB.
a) S1
b) S2
c) S3
d) S4
View Answer
Explanation: In S3, storage containers are referred to as buckets.
8. Which of the following can be done with S3 buckets through the SOAP and REST APIs?
a) Upload new objects to a bucket and download them
b) Create, edit, or delete existing buckets
c) Specify where a bucket should be stored
d) All of the mentioned
View Answer
Explanation: The REST API is preferred to the SOAP API because it is easier to work with large binary objects with REST.
9. Which of the following operation retrieves the newest version of the object?
a) PUT
b) GET
c) POST
d) COPY
View Answer
Explanation: Versioning also can be used for preserving data and for archiving purposes.
10. Which of the following statement is wrong about Amazon S3?
a) Amazon S3 is highly reliable
b) Amazon S3 provides large quantities of reliable storage that is highly protected
c) Amazon S3 is highly available
d) None of the mentioned
View Answer
Explanation: S3 excels in applications where storage is archival in nature.
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