From: Shanky (shankyz@gmail.com)
Date: Tue Jul 11 2006 - 05:47:21 ART
Hi,
According to the logic in the link below, for XOR Function with 3 inputs,
output will be 1 if one or all inputs are 1, so it will be 0 in case of even
no of 1s and in case all are 0 ?
http://www.dst-corp.com/James/LogicPrimer/Gates.html#Xor3
so XOR of 1,1,0 is 0 ...?
I thought XOR output will be 0, if all inputs are equal and 1 if any input
is different ..
so XOR output = 0, for 000,111 and 1 in all other cases.
Any comments?
On 7/11/06, Prem Anand (hprem) <hprem@cisco.com> wrote:
>
>
> (A & B & C) will have a bit set to 1 only when all 3 numbers have that
> bit set to 1
> (A | B | C) will have a bit set to 0 only when all 3 numbers have that
> bit set to 0
>
> So the XOR of the 3 numbers shud be (A & B & C) XOR (A | B | C)
>
> Any comments?
>
> Regards
> Prem
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Shanky
> Sent: Tuesday, July 11, 2006 12:14 PM
> To: Leo Leung
> Cc: ccielab@groupstudy.com
> Subject: Re: IE Lab 20 11.2 Telnet Filtering
>
> Hi,
>
> Was wondering if anyone knows a way to use the windows calculator for
> AND
> , XOR functions for multiple entries ? I know it works for 2 entries
> but
> can we use it for more than 2
>
> Appreciate if anyone could help.
>
> Thanks
>
> Shanky
>
>
> On 7/11/06, Leo Leung <leoleung_yh@yahoo.com> wrote:
> >
> > Group,
> >
> > The question asks to have one line access-list for these 3 IP
> > addresses.
> >
> > Decimal Binary
> >
> > 45.194.169.115 00101101 11000010 10101001 01110011
> > 61.202.173.243 00111101 11001010 10101101 11110011
> > 41.234.41.250 00101001 11101010 00101001 11111010
> >
> > IP 41 194 41 114
> > Mask 20 40 132 137
> >
> > I came out with the following:
> >
> > ip access-list 1 permit 41.194.41.114 20.40.132.137
> >
> > but solution guide shows the access-list with 3 differences
> >
> > ip access-list 1 permit 41.194.41.112 20.60.134.137
> >
> > I am wondering if its typo or I miscalculated.
> >
> > Leo
> >
> >
> >
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