From jajko@pobox.sk Fri Dec 22 11:43:09 2000
Date: Wed, 13 Dec 2000 22:48:50 +0100
From: Karel Ruzicka <jajko@pobox.sk>
Reply-To: ktl_info@egroups.com
To: ktl_info@egroups.com
Subject: [ktl_info] KP

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[ =poznamka k presmerovanej sprave= ]

> 
>    Ethernetovy ramec musi mat datovu cast dlhu minimalne 46B lebo:
>        a) paket by bol priliš kratky na zachytenie
>        b) nebolo by mozne udrzat synchronizaciu
>        c) nemusela by byt detekovana kolizia
>        d) je to dlzka hlavicky nadradenej vrstvy
> 
>    c je spravne
> 
>  Medzi dvoma zariadeniami (Master - Slave) prebieha
>  komunikácia pomocou BSC.
>  Slave na DataBlock(1) odpovedal spravou ACK(1).
>  Ak po prijati dalsieho DataBlock-u zisti slave poskodenie ramca, tak
> odpovie:
>       a) ACK(1)
>       b) NAK(2)
>       c) NAK(0)
>       d) neodpovie
> 
>   c je spravne
> 
> 
>  Pri poskodení ramca pocas prenosu sietou Frame Relay je
>       a) ramec doruceny, kotrola chyb sa nerobi
>       b) ramec doruceny a adresat je upovedomeny o chybe
>       c) ramec zahodeny a adresat je upovedomeny o chybe
>       d) ramec bez oznamenia zahodeny
> 
>   d je spravne
> 
> 
> 

____________________________________
P. S. V. P. U.
http://www.pobox.sk/



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