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You're reading from  CompTIA Security+: SY0-601 Certification Guide - Second Edition

Product typeBook
Published inDec 2020
PublisherPackt
ISBN-139781800564244
Edition2nd Edition
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Kali Linux
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Cybersecurity
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Ian Neil
Ian Neil
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Ian Neil

Ian Neil is one of the world's top trainers of Security+. He is able to break down information into manageable chunks so that people with no background knowledge can gain the skills required to become certified. He has recently worked for the US Army in Europe and designed a Security+ course that catered to people from all backgrounds (not just IT professionals), with an extremely successful pass rate. He is an MCT, MCSE, A+, Network+, Security+, CASP, and RESILIA practitioner that has worked with high-end training providers over the past 23 years and was one of the first technical trainers to train Microsoft internal staff when they opened their Bucharest Office in 2006.
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Implementing Cybersecurity Resilience

It is important that companies have redundancy or fault tolerance built in so that they are protected from cyber attacks.

Redundancy

Redundancy is the process of when one part of a system fails but we have the ability to keep the system running. It could also be referred to as fault tolerance. Let’s begin by looking at the different types of redundancy that companies could deploy. We will start with disks and then move on to geographical dispersal.

Disk

There is a need for the disk setup on servers to provide redundancy, sometimes known as fault tolerance. In simple terms, this means that if one or more disks fail, the data is still available. There are different Redundant Array of Independent Disks (RAID) levels, so let’s look at each of these in turn, starting with RAID 0:

  • RAID 0: RAID 0 uses a minimum of two disks with a maximum of 32 disks; see Figure 12.4:

Figure 12.4 – RAID...

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CompTIA Security+: SY0-601 Certification Guide - Second Edition
Published in: Dec 2020Publisher: PacktISBN-13: 9781800564244
© 2020 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Ian Neil

Ian Neil is one of the world's top trainers of Security+. He is able to break down information into manageable chunks so that people with no background knowledge can gain the skills required to become certified. He has recently worked for the US Army in Europe and designed a Security+ course that catered to people from all backgrounds (not just IT professionals), with an extremely successful pass rate. He is an MCT, MCSE, A+, Network+, Security+, CASP, and RESILIA practitioner that has worked with high-end training providers over the past 23 years and was one of the first technical trainers to train Microsoft internal staff when they opened their Bucharest Office in 2006.
Read more about Ian Neil

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