1 Reply Latest reply on Jan 31, 2017 10:56 AM by Tom with Wiley

    Inconsistent information between 2 editions of CCNA books

    Titi Wangsa Damhore

      Hello.

      Book 1:

      CCNA Routing and Switching Study Guide: Exams 100-101, 200-101, and 200-120

      by Todd Lammle

      ISBN: 9781118749616

       

      Book 2:

      CCENT ICND1 Study Guide, 3rd Edition

      by Todd Lammle

      ISBN: 9781119288787

       

      Chapter 4 review questions

      Question #4

       

      Both books have the same question:

      And same multiple choice answers, in the same order.

      The network address of 172.16.0.0/19 provides how many subnets and hosts?

       

      Same explanation, but different answers:

       

      ISBN: 9781118749616

      F. 8 subnets, 8,190 hosts each

      F. A CIDR address of /19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.

       

      ISBN: 9781119288787

      C. 7 subnets, 8,190 hosts each

      C. A CIDR address of /19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.

       

      The errata page:Wiley: CCENT ICND1 Study Guide: Exam 100-105, 3rd Edition - Todd Lammle

      Does not mention this inconsistency.

       

      If the answer is indeed F, please update the errata page to reflect this.

      If the answer is C, the new edition fixes this, please update the explanation (the explanation says 8 subnets).

      I am currently viewing these books using my safaribooksonline.com account.

      It is possible that safaribooksonline.com made the error, if so, please let me know, so I can update them.

       

      Thanks.