Question from Sybex book

bearfanbearfan Member Posts: 70 ■■□□□□□□□□
in CCNA & CCENT
I'm re-reading some chapters and re-doing the chapter tests from the Sybex book to prep for my Intro test Monday morning.

I missed 2 of 20 questions on the Sybex book Chapter 3 end of chapter test

I don't fully understand the explanation on Question #11 - which I missed. Can someone please explain?

Q: Which of the following IP addresses fall into the CIDR block of 110.68.4.0/18? (choose 3)

A. 110.68.8.32
B. 110.68.7.64
C. 110.67.6.255
D. 110.66.3.254
E. 110.65.5.128
F. 110.64.12.128

I think I will be ready Monday morning. I took the practice test on this site and got 97% missing one question. I hadn't taken it for 2 weeks (when I got 77%) so I don't think it was memorized.

I get 94% on Transcenders. But I'm still nervous.
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Comments

  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    well it looks like that block will range from 110.68.0.1 - 110.68.63.254 64 being the next subnet.

    But I don't see 3 that fall into that range.
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • bearfanbearfan Member Posts: 70 ■■□□□□□□□□
    The next subnet would be 110.68.64.1 - 110.68.126.255? And only 2 of the answers fall into that range..

    BTW..the book answers are B,C, and E.
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  • mikearamamikearama Member Posts: 749
    This question was dealt with a month ago... it's in the errata for the Sybex book.

    Check out this link:

    http://www.techexams.net/forums/viewtopic.php?t=25086

    Mike
    There are only 10 kinds of people... those who understand binary, and those that don't.

    CCIE Studies: Written passed: Jan 21/12 Lab Prep: Hours reading: 385. Hours labbing: 110

    Taking a time-out to add the CCVP. Capitalizing on a current IPT pilot project.
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  • bearfanbearfan Member Posts: 70 ■■□□□□□□□□
    Thank you Mike - I won't spend anymore study time trying to figure this one out!!
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  • wait2dominatewait2dominate Member Posts: 74 ■■□□□□□□□□
    bearfan wrote:
    The next subnet would be 110.68.64.1 - 110.68.126.255? And only 2 of the answers fall into that range..

    BTW..the book answers are B,C, and E.

    From what I can tell, in order for that question to be correct, with the answers they have listed, the SM should be a /22 mask, which allows for blocks of 4.....

    Network Address : 110.68.4.0
    Hosts : 110.68.4.1-110.68.7.254
    Broadcast Address : 110.68.7.255



    Edit: Link posted while typing that up
    Brake lights are a sign your car doesn't handle well enough.

    CCNP or MCSE is next to come.
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  • georgemcgeorgemc Member Posts: 429
    Have you checked the errata for the book? The question seems to be pretty jacked up.
    It's not a CIDR block since they appear to be subnetting a class A network. If they really meant CIDR then it's probable 210 vice 110. Just a WAG...

    George
    WGU BS: Business - Information Technology Management
    Start Date: 01 October 2012
    QFT1,PFIT in progress.
    TRANSFERRED/COMPLETED: AGC1,BBC1,LAE1,QBT1,LUT1,QLC1,QMC1,QLT1,IWC1,INC1,INT1,BVC1,CLC1,MGC1, CWV1 BNC1, LIT1,LWC1,QAT1,WFV1,EST1,EGC1,EGT1,IWT1,MKC1,MKT1,RWT1,FNT1,FNC1, BDC1,TPV1 REQUIRED:
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