The easiest thing in the world to do is just memorize the subnet table. If
you do this, then just write out the table when you sit down to take the
test (before you start the test). This way, you're not wasting time figuring
it out. It's right in front of you.
The table is very easy to memorize and will come in handy for the rest of
your career, not just in testing.
here's the link:
http://www.gdd.net/cisco/
Then just click on "Subnet Cheat Sheet"
But I agree, the questions are a bit misleading sometimes.
Happy testing!
----- Original Message -----
From: Brian Lodwick <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, October 14, 2000 11:31 AM
Subject: Re: Subnet mask question..
> Brian,
> I hate the way these tests word their questions sometimes. Why don't
they
> just state the mask as it should be -contiguous bits left to right(except
> for wildcard masks ofcourse). If they are going to state the subnet
portion
> is stealing 11 bits from the host portion of the address why don't they
just
> state that.
>
> You are exactly right though a /11 subnet mask is 255.224.0.0
>
> Don't let these silly tests screw you up. I think sometimes they try to
> impress a point and screw things up. I don't think Cisco is in the
business
> to have you memorize wrong information. (If you know subnetting in the
real
> world, you will pass their test questions regarding these issues ~~I would
> read Cisco's ACRC book and practice their examples, there is also a great
> section on 3com's website on subnetting I highly reccomend).
>
> There are 3 portions of the address (network,subnet,and host)and the
subnet
> portion is using 11 host bits to subdivide this class b network.
>
> The subnet mask would be /27 or 255.255.255.224 not /11.
>
> >>>Brian
>
> >
> >At 08:47 AM 10/14/2000 +0000, you wrote:
> >>Default netmask for class B is 255.255.0.0 with 11 subnet mask you will
> >>have /27
> >>ie 255.255.255.224
> >>
> >>it's bit confusing though..
> >>
> >>Nobody
> >>Keith Woodworth <[EMAIL PROTECTED]> wrote in article
> >><[EMAIL PROTECTED]>...
> >> >
> >> > Ive been at this for quite a while and the odd subnet question still
> >>gets
> >> > me.
> >> >
> >> > Boson question:
> >> >
> >> > IP address 172.16.3.57 w/ and 11-bit subnet mask. What are valid
hosts?
> >> >
> >> > I think ok class B, but I look at 11 bits as 255.224.0.0
> >> > (11111111.11100000.0.0) which does not go with the choices of answers
I
> >> > had.
> >> >
> >> > I got it wrong as the answer says an 11-bit mask is 255.255.255.224
> >>when
> >> > using a class b address. Is the mask there not 27 bits? What am I
> >>missing
> >> > there? How do they get the above mask w/11 bits?
> >> >
> >> > The valid hosts were:
> >> >
> >> > 172.16.3.33-172.16.3.62, which I think is valid for a 27 bit mask
> >> >
> >>
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