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18 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 2

Topics

e!ision o" #lass"$l and #lassless %&

addressing

e!ision o" '(SM and bene"its)se o" Classless %nterdomain o$ting *C%+,

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18 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 -

Classful addressing

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18 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 /

Classful networks

2/.2091/2192 to 229Class C

6//-.16-.8128 to 191Class

1621.128 *less 0and 12,0 to 12Class A

3osts per

net4or5

N$mber o"

net4or5s

irst o#tet

range

Address

#lass

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18 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 6

Some Class A owners

)7 Ministry o" +e"en#e

)7 So#ial Se#$rity +ept

A :lobal Net4or5

3allib$rton Company

Eli (ily and Company

ell;Northern esear#h

&r$dential Se#$rities %n#