PrepAway - Latest Free Exam Questions & Answers

Which architecture does the graphic that follows represent?

There are several different types of important architectures within backup technologies. Which architecture does the graphic that follows represent?

PrepAway - Latest Free Exam Questions & Answers

A.
Clustering

B.
Grid computing

C.
Backup tier security

D.
Hierarchical Storage Management

Explanation:
D: Hierarchical Storage Management provides continuous online backup functionality. It combines hard disk technology with the cheaper and slower optical or
tape jukeboxes. The HSM system dynamically manages the storage and recovery of files, which are copied to storage media devices that vary in speed and cost.
The faster media hold the data that is accessed more often, and the seldom-used files are stored on the slower devices, or near-line devices.
+ A is incorrect because clustering is a fault-tolerant server technology that is similar to redundant servers, except each server takes part in processing services
that are requested. A server cluster is a group of servers that are viewed logically as one server to users and can be managed as a single logical system.
Clustering provides for availability and scalability. It groups physically different systems and combines them logically, which provides immunity to faults and
improves performance.
+ B is incorrect because grid computing is load-balanced parallel means of massive computation, similar to clusters, but implemented with loosely coupled
systems that may join and leave the grid randomly. Most computers have extra CPU processing power that is not being used many times throughout the day. Just
like the power grid provides electricity to entities on an as-needed basis, computers can volunteer to allow their extra processing power to be available to different
groups for different projects. The first project to use grid computing was SETI (Search for Extra-Terrestrial Intelligence), where people allowed their systems to
participate in scanning the universe looking for aliens who are trying to talk to us.
+ C is incorrect because backup tier security is not a formal technology and is a distracter answer.

One Comment on “Which architecture does the graphic that follows represent?


Leave a Reply