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Copyright © the University of Tokyo

3

Copyright © the University of Tokyo< 1 >

3.1

(3.1.1) :㈻

(3.1.2):

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B

L

L L

LA AB B

(a) (b)

L'

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?

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┘ モ

:

モさ

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3 4 1

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( )

1:

2:

3:

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(A)

(B+C)

(A) = (B) (C)

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:log2( / )

: (bit)

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Copyright © the University of Tokyo< 10 >

: ┘ モ ( )

?

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: -log2( )

: (bit)

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3.2

(3.2.2) (a)

┞ ッ (3.2.3) (a)

ッ ッ

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(protocol)

:

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:

: ┈( )

:

:

:

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3.3

(3.3.1)

: ㊪

:

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3.4

(3.4.1)

(3.4.2)

IP (3.4.3)

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:

:

:

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( )

よ:

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(WWW, …):1 1 TCP

:( LAN, …)

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TCP/IP

TCP

HTTP (WWW) SMTP ( )

UDP

IP

LAN

1 1

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IP

IP :

( : 々 )

Copyright © the University of Tokyo

(advanced topics)

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