Every operating system needs a file system to save and retrieve data. Most file systems have various strengths and weakness associated with flexibility, reliability, performance, scalability, security, and fault tolerance. Various types of file systems exist, each with its inherent strengths and limitations.
Both Windows and Linux have hierarchical file systems. While such hierarchical file systems have certain unique strengths over other types of file systems, they have their weaknesses too. As a computing professional, you need to understand such strengths and weaknesses. Such understanding will help you ensure the reliability of the system, that the critical data remains secure, and that it is easily accessible by those that need to see it. You also need to be able to compare hierarchical file systems with other types of file systems used by different operating systems.
For this Discussion, read Chapter 8 of Linux Pro, the “Disk and File System Management” resource, and Chapter 9, “Network File System (NFS),” of the Red Hat Linux 4: Red Hat Linux Reference Guide. These three resources can be located in this week’s Learning Resources.

Write an explanation of one strength and one weakness of a tree-structured directory. Describe another type of file system different from the hierarchical file system. Explain which file system you would prefer and why

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Venezuelan guppies Guppies are small fish found in streams in Venezuela. Male guppies are brightly colored. with black, red, blue and iridescent (reflective) spots. Males cannot be too brightly colored or they will be seen and consumed by predators, but if they are too plain, females will choose other males. Natural selection and sexual selection push in opposite directions. When a guppy population lives in a stream in the absence of predators, the proportion of males that are bright and flashy increases in the population. If a few aggressive predators are added to the same stream, the proportion of bright colored males decreases within about five months (3-4 generations). The effects of predators on guppy coloration have been studied in artificial ponds with mild, aggressive, and no predators, and by similar manipulations of natural stream environments (Ender, 1980).
Choose the one answer that best reflects how an evolutionary biologist would answer. 9. A typical natural population of guppies consists of hundreds of guppies. Which statement best describes the guppies of a single species in an isolated population? a. The guppies share all of the same characteristics and are identical to each other. b. The guppies share all of the essential characteristics of the species; the minor variations they display don’t affect survival. c. The guppies are all identical on the inside, but have many differences in appearance. d. The guppies share many essential characteristics, but also vary in many features.

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