targate 2260

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targate 2260

Postby deepthiP » Tue Jan 29, 2013 1:03 am

question 22 i.e.

http://targate.s3.amazonaws.com/images/2260/Ques/CS-ID-2260_Q-22.gif

its not neccessary o be abelian
becoz for matrx AA^-1 = I but dat doesnt mean they are abelian??

Q 17 i.e.

http://targate.s3.amazonaws.com/images/2260/Ques/CS-ID-2260_Q-17.gif


they are cosidering 0th subnet as 1st subnets isnt so??
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Re: targate 2260

Postby moiezg123 » Tue Jan 29, 2013 2:33 am

1. (xy)^-1 =xy (inverse of xy is xy)
y^-1x^-1= xy
yx=xy ( inverse of y is y and inverse of x is x )
Therefore G is abelian.

2. All Zeros subnet is always considered as the first subnet according to the new RFC effective from the year 1995. And all ones subnet is considered as the last subnet.
So, answer is D.
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