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• Textbook Errata

Textbook Errata

As it turns out, there are a few errors in some CompTIA textbooks. Here are those that I have come across:

CompTIA A+ Certification All-in-One Exam Guide, Eleventh Edition (Exams 220-1101 & 220-1102) 978-1264609901

• 732 Q6
• 649 Q8
  • ps is non-interactive
• 767 Q2
  • incorrect letter answer
• 749
  • fiber is half duplex, but it does not mean you need two fibers for all connections... example: residential fiber using SC
• 1243 Q5
  • Answer should be "change documentation"

CompTIA Network+ N10-009 Exam Cram ISBN 978-0135340837

• RJ-45 diagram
• table 5.4: total distance of 100 meter
• before near table 6.1, MU MIMO
• before figure 8.2, vertical cables, UTP should be STP
• after table 8.2, snapshots are not backups, differentiate different kinds of vm snapshots
• DR and HA quiz Q5: "as 'a' network administrator"
• 3.5 cram quiz Q2 incorrect, answer says full tunnel VPNs only route specific network traffic
• 4.3 cram quiz: captive portal is not a network itself
  
• Cram sheet: DNS over https not http

CompTIA Security+ SY0-701 Exam Cram 7th Edition ISBN 978-0138225575 

• "With symmetric encryption, you can use a series of keys (public and private)": should be asymmetric as opposed to symmetric
  
• Below figure 4.1, exam alert; messages are not encrypted but signed using a private key.