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reyaL ISO
)noitcennocretnI metsyS nepO(
.
. .
) noitazinagrO sdradnatS lanoitanretnI )OSI (
PI/PCT ANS tneCED
) (
) noitcennocretnI metsyS nepO(
4891
.
. .
)reyaL ISO(
OSI :
ecruos(( ataD
)reyal 7( noitanitseD((
*
ledom ISO
noitacilppA .7
noitatneserP .6
noisseS .5
tropsnarT .4
krowteN .3
kniL ataD .2
lacisyhP .1
:
noitaluspacnE
ISO
noitaluspacnE-eD
:)noitacilppA( : 7 *
)noitacilppA(
:
tfosorciM sliamE : PTMS
kooltuO
sliamE : 3POP
resworB : PTTH
: PMNS
)daolnwoD( : PTF
. ISO
.
.
, PCHD , PMNS , SND, PTTH, tenleT
3POP , PTMS , PTTH , PTF
: )noitatneserP( : 6 *
:
: gnidoC ataD
edoC iicsA
gnidoceD ataD
stiB : noisserpmoC ataD
ytiruceS : noitpyrcnE ataD
.
.
: 6
warDkciuQ TCIP *
. CAM
. ) ( FFIT *
) (GEPJ *
.
6
:
. : ) IDIM *)
: ) (GEPM *
. DC
emiTkciuQ *
. CAM
: )noisseS( : 5 *
lortnoC golaiD
:
: xelpuD flaH
: xelpuD lluF
.
.
:
. wodniw-x *
. )PSA( klaTelppA *
.)PCS AND( *
.SFN )metsyS eliF krowteN( *
:)tropsnarT( 4 *
:
detneirO noitcennoC
sselnoitcennoC
PCT detneirO noitcennoC
))locotorP noitacinummoC noissimsnarT
PCT
)noitceted rorre( ) lortnoc wolf (
PDU )noitcerroc rorre(
PCT PDU
tiB02 redaeH PCT
tiB8 redaeH PDU
PCT
)tnemgeS ataD( *
ataD
secruoseR
ataD
.
)egdelwonkcA &srebmun ecneuqes( *
ecruoS
ataD noitanitseD
ataD redaeH
noitanitseD
: srebmun ecneuqeS
.
01 kcA : rebmuN egdelwonkcA
.01 KCA 9kcA
)rebmuN troP( *
: troP
: trop ecruoS
: troP noitanitseD
:-
)3201 ot 0( :troP nwonK lleW
PTTH
.08 troP
)53556 ot 4201(:
.
PCT
: 3
noitanitseD ecruoS :
ecruoS tnemhsilbatse noitcennoC
( gniwodniW noitanitseD
)
ekahsdnaH yaW-eerhT :
. PCT
elbaileR
PDU PCT .
:
.
.
sretemaraP
:
troP ecruoS :TROPS
troP noitanitseD :TROPD
rebmuN ecneuqeS :QES
.
.
egdelwonkcA :KCA
.
: yaw-eerht
)ezinorhcnyS( NYS A
.B
KCA-NYS B
.A )egdelwonkcA ezinorhcnyS (
B KCA A
.ETATS DEHSILBATSE
:
.)dehsiniF ( NIF NYS
ekahsdnah yaw-eerht
etats
. sretemarap
(
.)PTF ( )PTTH
ekahsdnah yaw-eerht
.
.
* Connectionless UDP ( (User Datagram Protocol
UDP
Sequence Number ACK window ))
.
* 3 (Network):
Packets
Network Layer :
Addressing : Source IP & Destination IP
Encapsulation : Data Segment Packets
Header IP Source IP Destination
Routing : Source Destination
Data
Decapsulation : Destination
:
IPv4 & IPv6 & IPX & Apple Talk & DECent
Header Network Layer: Time to live (TTL) &
Source IP & Destination IP & Type of Service (TOS) & Protocols
Time to live (TTL) Packet S Des
Type of Service (TOS) Purity Data S D
Protocols TCP or UDP
:)kniL-ataD( 2 *
sserddA CAM emarF stekcaP
SCF noitanitseD ecruoS
CRC
noitanitsed kcehC ycnadnudeR cilcyC ((
. emarF
emarF
emarF
emarF tenrehtE NAL
emarF CLDH PPP NAW
: reyaL kniL ataD
)CLL( lortnoC knil lacigoL
emarF stekcaP
klaTelppA ro XPI ro 6v-4vPI stekcaP
)CAM( lortnoC sseccA aideM
ecruoS
noitanitseD
emarF
:)lacisyhP( 1 *
.
: -
. #
. #
. #
. #
) egatloV(
.
: . # . # : # # #
reyaL ISO