A+ Topic: RAID

RAID, the acronym variously explained as “redundant array of inexpensive disks” or “independent disks,” is critical on the A+, Network+, Security+ and Linux+ CompTIA exams (at the least).

Here’s some great LinuxMagazine articles that walk you through the variants:

“Introduction to RAID” at http://www.linux-mag.com/id/7924/

“Intro to Nested-RAID: RAID-01 and RAID-10” at http://www.linux-mag.com/id/7928

“Nested-RAID: RAID-5 and RAID-6 Based Configurations” at http://www.linux-mag.com/id/7931?hq_e=el&hq_m=1154685&hq_l=4&hq_v=55610542ec

The Madness of the USBs (and Thunderbolts and alternate modes…)

I see rough issues coming for A+ students in terms of identifying the sudden proliferation of USB versions and ports, Thunderbolt versions, “alternate modes” and “multiplex modes.” Consumers are going to face lots of compatibility problems, because there are so many modes: some cables do one thing, while other cables that look identical do different things. And how about Thunderbolt over USB? Nightmare is a legitimate description.

http://blog.fosketts.net/2016/10/29/total-nightmare-usb-c-thunderbolt-3/

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Excellent TechRepublic Article: “10 mistakes to avoid when troubleshooting IT problems”

Don’t you hate those clickbait “10 Great Pictures of …” or “10 Mistakes Men Make,” etc. etc.?

I say, as always, consider the source. For instance, TechRepublic is a pretty darn reliable, high-quality site for the hard-core geek (and you are one if you’re here reading this).

Whether trying to diagnose a single device or dealing with the urgency of a company-wide outage, there are solid best practices on what NOT to do. With that in mind, here are 10 things to avoid doing, so you can limit the pain and keep things running as smoothly as possible….

Yes! Exactly! Please show me your painful mistakes so I can wince and try to avoid them forever (at least try). Check out the list and see what you think:

http://www.techrepublic.com/article/10-mistakes-to-avoid-when-troubleshooting-it-problems/

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Hacker Highschool: Download Uncut Lessons

Here are the lessons I produced as a contributor and Project Manager of Hacker Highschool, 2012-2016, complete and uncut, with the names of all contributors intact.

These lessons are distributed under the Creative Commons 3.0 License. Parts of these lessons are Copyright 2016 Glenn Norman. For updated project information visit http://hackerhighschool.org.

HHS_en1_Being_a_Hacker.v2_GN_2015-09-28.pdf

HHS_en2_Commands.v2.GN_2015-01-06.pdf

HHS_en3_Beneath_the_Internet.v2.GN_2013-08-06a.pdf

HHS_en4_Playing_With_Daemons.v2_GN_2013-12-09.pdf

HHS_en5_System_Identification.v2.GN_2015-06-23.pdf

HHS_en6_Malware.v2_GN_2014-12-10.pdf

HHS_en7_Attack_Analysis.v2_GN_2014-12-22.pdf

HHS_en8_Forensics.v2.GN_2015-01-07.pdf

HHS_en9_Hacking_Email_GN_2014-12-24.pdf

HHS_en10_Web_Security_and_Privacy.v2.GN_2015-08-13.pdf

HHS_en11_Hacking_Passwords.v2_GN_2015-08-21.pdf

HHS_en12_Legalities-and-Ethics.v2_GN_2013-10-17.pdf

HHS_en13_Cloud_Computing.v2_GN_2013-10-25.pdf

HHS_en14_Databases.v2.GN_2012-08-22.pdf

HHS_en15_Doxing.v2_GN_2012-09-23.pdf

HHS_en16_Exploits_and_Vulnerabilities.v2.GN_2013-06-29.pdf

HHS_en17_Mobile_Devices.v2_GN_2015-05-12.pdf

HHS_en18_Physical_Security.v2_GN_2012-10-02.pdf

HHS_en19_Wireless_GN_2013-07-01.pdf

HHS_en20_Social_Engineering.v2.GN_2013-07-01.pdf

HHS_en21_Hacktivism.v2.GN_2013-11-02.pdf

HHS_en22_Cyberbullying.v2.GN_2013-01-24.pdf