[PDF] Cours DNS : introduction generale sur le systeme | Cours reseau
Texte intégral
(2) Plan. ❍. *pQpUDOLWpV. ❍. 'RPDLQ1DPH6\VWHPODWKpRULH. ❍. HWODSUDWLTXH. Nommage des Ressources Réseau ❍. /HVpTXLSHPHQWVFRPPXQLTXHQWJUkFHjOHXUDGUHVVH,3. ❍. 6HXOHVOHVDSSOLFDWLRQVXWLOLVHQWOHVQRPVGHVpTXLSHPHQWV ² SRXUFHUWDLQHVRQSHXWXWLOLVHUOHVDGUHVVHVIWSWHOQHW ² SRXUG DXWUHVOHVQRPVVRQWLQGLVSHQVDEOHVZZZ. ❍. $XQHDGUHVVH,3SHXWFRUUHVSRQGUHXQRXSOXVLHXUVQRPV DOLDV
(3). ❍. 8QQRPGRLWrWUHXQLTXHDXPRQGH. Page 2.
(4) Les Correspondances Nom - Adresse IP. ❍. ❍. ❍. )LFKLHUHWFKRVWV ILFKLHU$6&,, PLVHjMRXUPDQXHOOH JHVWLRQPDQXHOOHGHVUHVVRXUFHVQRQORFDOHV 1,6 <HOORZ3DJHV
(5) ILFKLHUQGEP FUppjSDUWLUGXILFKLHUHWFKRVWVGXPDvWUH JHVWLRQPDQXHOOHGHVUHVVRXUFHVQRQORFDOHV 'RPDLQ1DPH6\VWHP '16
(6) HQVHPEOHGHILFKLHUV$6&,, RUJDQLVDWLRQKLpUDUFKLTXHHWPRQGLDOHGHVUHVVRXUFHV PpPRULVDWLRQGHVLQIRUPDWLRQVUHFXHLOOLHV FDFKH
(7). DNS : généralités (1) ❍. 5)&HW. ❍. /HV2EMHFWLIV (VSDFHGH1RPVPRQGLDOFRKpUHQWLQGpSHQGDQWGHV SURWRFROHVHWGXV\VWqPHGHFRPPXQLFDWLRQVRXVMDFHQWV *HVWLRQGpFHQWUDOLVpHGHVLQIRUPDWLRQVGHODEDVHGHGRQQpHV JOREDOH 8VDJHJpQpUDOLQGpSHQGDQWGHVW\SHVG DSSOLFDWLRQV HWGXW\SHGHPDFKLQHVGXPLFURDXPDLQIUDPH. Page 3.
(8) DNS : généralités (2) ❍. $YDQWDJHV *HVWLRQGpFHQWUDOLVpH ² DGPLQLVWUDWLRQGHVVHXOHVUHVVRXUFHVORFDOHV ² PDLVDFFqVjWRXWHVOHVUHVVRXUFHVGHO ,QWHUQHW 6\VWqPHGHFDFKH PpPRULVHUOHVUpVROXWLRQVSUpFpGHQWHV JDLQGHWHPSV SDVGHVXUFKDUJHLQXWLOHGXUpVHDX '16V\VWqPHODUJHPHQWUpSDQGXELHQU{GpHWVWDQGDUG. DNS : généralités (3) ❍. ,QFRQYpQLHQWV 3UREOqPHGHFHUWLILFDWLRQGHO LQIRUPDWLRQ ² OHVGRQQpHVFKDQJHQWOHQWHPHQW OHVFRXSOHV QRPV#,3
(9) ² SULRULWpjO DFFqVjO LQIRUPDWLRQVXUOHVPLVHVjMRXUHWOD JDUDQWLHGHFRKpUHQFH. Page 4.
(10) DNS : la théorie (1) ❍. &RQVWLWXDQWVGX'16 / (VSDFHGHV1RPVGHGRPDLQHVHWOHVLQIRUPDWLRQV DIIpUHQWHV 5HVRXUFH5HFRUGVRX55
(11) /HV6HUYHXUVGH1RPV /HV5HVROYHUV. DNS : la théorie (2) ❍ ❍. ❍. ❍. / HVSDFHGHV1RPVHVWDUERUHVFHQW 8)6
(12) ,OHVWGLYLVpHQQLYHDX[GHGRPDLQHV 5RRW
(13) 7RS/HYHO'RPDLQ FRPPLOQHWHGXIUXNGH
(14) 6HFRQGDU\/HYHOGRPDLQ $FKDTXH1RHXGRX)HXLOOHGHO DUERUHVFHQFH HVWDVVRFLpXQHQVHPEOHGH5HVVRXUFHV HWXQ1RP FDUDFWqUHVPD[LPXP
(15) ² ([('8 -866,(8 )5 &156 /HQRPGHGRPDLQHG XQQRHXG VXLWHGHVQRPVGHGRPDLQHVHQUHPRQWDQWGXQRHXGYHUVODUDFLQH 5RRW
(16). . OHVQRPVGHGRPDLQHGHFHWWHVXLWHVRQWVpSDUpVSDUXQ ² ([HGX. -XVVLHXIU. Page 5. IU. FQUVIU.
(17) DNS : la théorie (3) ❍. ❍ ❍. ❍. /HQRPPDJHSHXWDXVVLrWUHUHODWLI FHODVXSSRVHTXHO 25,*,1(VRLWFRQQXH ([VKLYDMXVVLHX HVWXQQRPUHODWLIDXGXGRPDLQH)5 ² RQGLWTXH)5HVWO RULJLQHFRXUDQWH XQQRPGHGRPDLQH UHODWLIRXDEVROX
(18) HVWOLPLWpjFDUDFWqUHV XQGRPDLQHHVWLGHQWLILpSDUXQ1RPGHGRPDLQH F HVWODVRXVDUERUHVFHQFHTXLDSRXURULJLQHFHQRPGHGRPDLQH 8QGRPDLQHLQFOXVGDQVXQDXWUHHVWXQVRXVGRPDLQH ([SUHSDLPLWHGXHVWVRXVGRPDLQHGH ² DLPLWHGX ² PLWHGX ² HGX ² . DNS : la théorie (4) ❍. 4XHO1RPGH'RPDLQHFKRLVLU" 5)& FDUDFWqUHVPD[ FRQVHLOOpFDUDFWqUHVPD[
(19) $=D] GRLWFRPPHQFHUSDUXQHOHWWUH. ❍. OHJpUDQWGXGRPDLQHHQJOREDQWOHY{WUHGRLWDVVXUHUO XQLFLWpGHV QRPVGHGRPDLQH O 85(&SRXUXQVRXVGRPDLQHGH&156)5 OH$)1,&SRXUXQVRXVGRPDLQHGH)5 . Page 6.
(20) L’Espace des Noms "". (Root). Autres Pays. USA .com .edu. .mit. lcs. .mil .gov. .ddn. nic. .arpa .org. .net. .nordu. nic. .fr .uk .de .nl .au .jp. .edf. .urec. .der. .vjf. isis. compta. •••. .ac. soleil. DNS : administration (1) ❍. / DGPLQLVWUDWLRQGHVQRPVGHGRPDLQHHVWKLpUDUFKLVpH /H1,& 1HWZRUN,QIRUPDWLRQ&HQWHU
(21) DX[(WDWV8QLVHVW UHVSRQVDEOHGHODFFRUGLQDWLRQPRQGLDOH$8725,7(. ❍. HWGpFHQWUDOLVpH /H1,&DGRQQpGpOpJDWLRQj5,3(1&&SRXUODJHVWLRQGHV 1RPVGH'RPDLQHHQ(XURSH ² 5,3(1&&DDXWRULWpSRXUO (XURSH 5,3(1&&DGRQQpGpOpJDWLRQDO¬·$)1,&SRXUODJHVWLRQGHV QRPVGHGRPDLQHHQ)UDQFH ² OH$)1,& $VVRFLDWLRQ)UDQoDLVHSRXUOHQRPPDJH LQWHUQHWHQFRRSpUDWLRQKWWSZZZQLFIU
(22) DDXWRULWpHQ )UDQFH . Page 7.
(23) DNS : administration (2) ❍. /¬·$)1,&HQUHJLVWUHWRXVOHVQRPVGHVRXVGRPDLQHGXGRPDLQH )5 DYHFXQJpUDQWSRXUFKDTXHGRPDLQH GpOpJDWLRQG DXWRULWp
(24) ² HGIIUHVWJpUpSDUOD'LUHFWLRQGHO (') ² XUHFIUHWFQUVIUVRQWJpUpVSDUO 85(& ² . ❍. /HJpUDQWGXGRPDLQH;IUHVWUHVSRQVDEOH GHODGpOpJDWLRQGHVQRPVGHGRPDLQHVGHODIRUPH<;IU GHODGpVLJQDWLRQG XQDGPLQLVWUDWHXUGXGRPDLQH<;IU. DNS : administration (3) ❍. ,OIDXWFRQWDFWHUO¬·$)1,& KWWSZZZQLFIU
(25) 3RXUIDLUHHQUHJLVWUHUXQQRPGHGRPDLQHVRXVIU 3RXUIDLUHRXYULUOD]RQHFRUUHVSRQGDQWH. ❍. &RQWDFWHUOH*,35HQDWHU GQVVYS#UHQDWHUIURXZZZUHQDWHUIU
(26) SRXUOHVHQWLWpVUHOHYDQWGHODFRPPXQDXWp(QVHLJQHPHQW 5HFKHUFKH. ❍. ,OIDXWFRQWDFWHUO 85(& GQVPDVWHU#XUHFFQUVIURX ZZZXUHFFQUVIU
(27) 3RXUIDLUHHQUHJLVWUHUXQQRPGHGRPDLQHVRXVFQUVIU 3RXUIDLUHRXYULUOD]RQH;FQUVIU. Page 8.
(28) DNS : la théorie (6) ❍. ,OQ \DSDVGHFRUUHVSRQGDQFHV\VWpPDWLTXHHQWUHXQQRPGH GRPDLQHHWXQHDGUHVVHGHUpVHDX,3 /HQRPHVWXQHQRWLRQDGPLQLVWUDWLYH /HGRPDLQHFQUVGLUIUUHJURXSHVLWHVj3DULVHWVLWHj 7RXORXVH. ❍ ❍. ,O\DXQHKLpUDUFKLHGHVQRPVGHGRPDLQHV FRQWUDLUHPHQWDX[DGUHVVHVGHUpVHDX[. DNS : la théorie (7) / HVSDFHGHV1RPVHWOHVUHTXrWHVLQYHUVHV ❍. UpDOLVHUODFRUUHVSRQGDQFH#,3!QRP QRPGHPDFKLQHRXGHUpVHDX
(29). ❍. OHSVHXGRGRPDLQHLQDGGUDUSDHWGHVSRLQWHXUV UHSUpVHQWDWLRQGHO HVSDFHGHVDGUHVVHVVRXVIRUPHGH GRPDLQHV H[HW. Page 9.
(30) Le pseudo domaine in-addr.arpa. $USD. )U. ,QDGGU . -XVVLHX. 8UHF. 6KLYD. 7HWK\V. . PTR. . DNS : la théorie (8) /HV5HVRXUFH5HFRUGV 55V
(31) ❍. 8QQRPGH'RPDLQHLGHQWLILHXQQRHXGGHO DUEUHGHV1RPV. ❍. QRHXG !XQHQVHPEOHG LQIRUPDWLRQV 5HVVRXUFHV
(32). ❍. &HWHQVHPEOHHVWGpFULWSDUGHV55V. ❍. ,OSHXW\DYRLUSOXVLHXUV55V OHXURUGUHHVWLQGLIIpUHQW. Page 10.
(33) Sructure d’un RR. 3URSULpWDLUH. 77/. &/$66(. 1RPGH'RPDLQH LPSOLFLWH
(34). 1EHQWLHU VHFRQGHV
(35). ,1 &+. GXUpHGHYLH GDQVOHFDFKH. 7<3(. 5'$7$ I 7<3(&/$66(
(36). $ 375 62$ 16 0; &1$0( +,1)2 :.6 . #,3 ELWV
(37) 1RPB'RP 1RPBKRVW 1RPBKRVW 1RPBKRVW 7H[WH 6HUYLFHV. DNS : la théorie (10) ❍. ([HPSOHVGH5HVRXUFH5HFRUGV 3URSULpWDLUH. &ODVVH 7\SH. ,6,('8. ,1. 0;. . $ $. 9(1(5$,6,('8. Page 11. 5'$7$ . 9(1(5$,6,('8 .
(38) Alias et noms canoniques. 3URSULpWDLUH. &ODVVH7\SH. 5'$7$. /DIRULDLESIU,1 $ .OHLRLESIU &1$0(. /DIRULDLESIU. WHWK\VXUHFIU QVXUHFIU IWSXUHFIU. WHWK\VXUHFIU WHWK\VXUHFIU. . $ &1$0( &1$0(. DNS : la théorie (12) $OLDVHWQRPVFDQRQLTXHV ❍. 8QQRPGH'RPDLQHQHGRLWMDPDLVSRLQWHUVXUXQDOLDVPDLVVXUXQ 1RPFDQRQLTXH. ❍. ([ LQDGGUDUSD,1375. Page 12. /DIRULDLESIU.
(39) DNS : la théorie (13) ❍. 3DUDPqWUHVGX62$ 5)&
(40) ¬ ■ Serial ■ Refresh ■ Retry ■ Expire ■ Minimum. ❍. No de version Intervalle entre 2 polling des serveurs 2daires Intervalle si polling infructueux Durée de l'autorité sur la zone Durée de vie (TTL) des RR dans un cache. ([HPSOH . 9HUVLRQ. . . 5HIUHVK K
(41). . . 5HWU\ K
(42). . . ([SLUH M
(43). . . 0LQLPXP M
(44). DNS : Les ZONES (1). ❍. (VSDFHGHV1RPVGH'RPDLQHHVWGpFRXSpHQ=21(6 DGPLQLVWUDWLYHV. ❍. 8QH=RQHHVWVRXVO DXWRULWpG XQ1DPH6HUYHU 16
(45). ❍. 8Q1DPH6HUYHUSHXWDYRLUDXWRULWpVXUSOXVLHXUV=RQHV. Page 13.
(46) DNS : les ZONES (2) 'pILQLWLRQV ❍ XQH=21(HVWGpOLPLWpHSDUOHVSDUWLHVFRQWLJHVGHO DUEUHGHV QRPVGHGRPDLQHVXUOHVTXHOOHVXQ16SRVVqGHXQHLQIRUPDWLRQ FRPSOqWH ❍. F HVWOHVRXVDUEUHJpUpSDUXQHHQWLWpDGPLQLVWUDWLYHSDUWLFXOLqUH / DXWRULWpVXUFHVRXVDUEUH FHWWH=RQH
(47) OXLDpWpGpOpJXpH. ❍. ODGpOpJDWLRQHVWWRWDOH SHXWFKDQJHUO RUJDQLVDWLRQGXVRXVDUEUHGRQWLODODFKDUJH VDQVSUpDYLV SHXWGpOpJXHUXQHSDUWLHGHOD=RQHjXQHDXWUHHQWLWpVRXV ]RQH. DNS : les ZONES (3). ❍. /HQRPGHOD=RQH 1RPGXQRHXGVRPPLWDO QRHXGVRPPLWDO QRHXGOHSOXVpOHYpGHODVRXVDUERUHVFHQFH. ❍. FRXSXUH HQWUH]RQHV
(48) Q LPSRUWHRHQWUHQRHXGVDGMDFHQWVGHO DUEUH WRXVOHVQRHXGVG XQH]RQHGRLYHQWrWUHUHOLpVHQWUHHX[ !IUDJPHQWDWLRQGHODEDVHGHGRQQpHJpQpUDOH !SOXVJUDQGHIDFLOLWpG DGPLQLVWUDWLRQ !PDLV. Page 14.
(49) DNS : les ZONES (4) =RQH5RRW. =RQH)5 )5 =RQH,15,$. =RQH,%3. ,15,$. &RUWRQ/D\RQ. =RQH85(& ,%3. (FROH'RF0$6,/DIRULD. 85(&. 7HWK\V 3KRHEH. -XSLWHU +HUPHV.OHLR. DNS : les ZONES (5) &UpDWLRQG XQHQRXYHOOH=RQH 5)&
(50) ❍. REWHQLUODGpOpJDWLRQGHFHWWHQRXYHOOH]RQH DXSUqVGXJpUDQWGHOD]RQHPqUH ]RQHPqUH]RQHTXLLQFOXWODQRXYHOOH]RQH HUQLYHDX
(51). ❍. 2IIULUXQVHUYLFHGHQRPVUHGRQGDQW EDFNXSpORLJQp. ❍. $MRXWHUOHVLQIRUPDWLRQVDGKRFGDQVOD]RQHPqUH JOXHGDWD. Page 15.
(52) DNS : Les Serveurs de Noms (1) ❍. 1DPH6HUYHUV 16
(53). ❍. 2ULJLQH%,1' %HUNOH\,QWHUQHW1DPH'DHPRQ
(54). ❍. %DVpVXUOHPRGHFOLHQWVHUYHXU 8WLOLVHXQHFRQQH[LRQ7&3 SRUWSRXUOHVHUYHXU
(55) 8QL[LQ1DPHG:LQGRZV1706QDPHVHUYHU ² UpSRQGDX[UHTXrWHVGHVFOLHQWV ² UpVRXGOHVFRUUHVSRQGDQFHV 1RP!#,3 #,3!1RP. DNS : Les Serveurs de Noms (2) ❍. )RQFWLRQV 5pSRQGUHDX[UHTXrWHVUHoXHVFRQFHUQDQWGHVUHVVRXUFHVGH VD VHV
(56) ]RQH V
(57) (YHQWXHOOHPHQWUpSRQGUHjGHVUHTXrWHVFRQFHUQDQWG DXWUHV ]RQHV FDFKHGGDWD
(58). ❍. ,OFRQQDLW OHV#,3HWOHVQRPVGHVUHVVRXUFHVGHVD]RQH OHV#,3GHV16GHV]RQHVLQFOXVHV VRXV]RQHV
(59) OHV#,3GHV16GHOD]RQH5RRW TXLFRQQDLVVHQWO #,3GHV16GHVVRXV]RQHVDGMDFHQWHV ('81(7&20)58.1/. Page 16.
(60) DNS : Les Serveurs de Noms (3) 5pVROXWLRQVGHVUHTXrWHV ❍. PRGHLWpUDWLI PLQLPDOHWREOLJDWRLUH
(61) !5pSRQVH ^'DWD_(UUHXU_3RLQWHXU`. ❍. PRGHUpFXUVLI IDFXOWDWLISUpFLVpSDUOHIODJ5$5'
(62) !5pSRQVH ^'DWD_(UUHXU`. DNS : Les Serveurs de Noms (4) ❍. /RUVTX XQVHUYHXUUHoRLWXQHUHTXrWH LOUpSRQGDXFOLHQWVL ² LODO LQIRUPDWLRQGDQVVHVWDEOHV ² RXGDQVVRQFDFKH VLQRQLOFRQVWUXLWXQH GHV
(63) UHTXrWHVSRXUOHV16VXFFHVVLIV HQ FRPPHQFDQWSDUFHX[GHOD]RQH5RRW
(64) HW ² VRLWWUDQVPHWODUpSRQVHjO DXWHXUGHODUHTXrWH PRGH UpFXUVLI
(65) ² VRLWWUDQVPHWO #,3GX16jLQWHUURJHU ² O DXWHXUGHODUHTXrWHGHYUDLQWHUURJHUFHQRXYHDXVHUYHXU PRGHLWpUDWLI
(66). ❍. 6XUFKDTXHPDFKLQHXQFDFKHPpPRULVHWRXWHVOHVUpVROXWLRQV SUpFpGHQWHV. Page 17.
(67) DNS : les serveurs de noms (5) ❍. 5HGRQGDQFHGHVVHUYHXUV 8QVHUYHXUDSSHOpSULPDLUH ² %DVHG LQIRUPDWLRQVG XQGRPDLQH ² &HWWHEDVHHVWPLVHjMRXUPDQXHOOHPHQW ² VHXOHDXWRULWpVXUOHVLQIRUPDWLRQVGXGRPDLQH 'HVVHUYHXUVVHFRQGDLUHV ² FRSLHDYHFPLVHjMRXUDXWRPDWLTXHGHODEDVH G LQIRUPDWLRQVGXVHUYHXUSULPDLUH ² VROOLFLWDWLRQjLQWHUYDOOHUpJXOLHUGXVHUYHXUSULPDLUH ² VWRFNHQWGDQVOHXUFDFKH. DNS : les serveurs de noms (6) ❍. 5HPDUTXHV ² ,OIDXWELHQFKRLVLUVRQVHUYHXUSULPDLUHHWVHVVHUYHXUV VHFRQGDLUHV ² 3HQVHUDXHQILQGHVQRPVTXLGpVLJQHQWXQGRPDLQH DEVROX ² $WWHQWLRQjPRGLILHUOHQXPpURGHYHUVLRQGDQVOHVWDEOHVj FKDTXHPLVHjMRXU. Page 18.
(68) Les Requêtes et les réponses (1) ❍. OHVIRUPDWVVRQWVWDQGDUGLVpV 8'3 3RUW
(69) RFWHWVPD[LPXP (17(7(. 6. 6. 6. 6. RFWHWV (QWrWH !2SFRGHW\SHGHUHTXrWH 64QDPH4W\SH4FODVV 655VUpSRQGDQWjODUHTXrWHUHoXH 655VSRLQWDQWYHUVG DXWUHV16 655VHQSULPH. DNS : Les Requêtes (2) ([HPSOH 5HTXrWH ,%3)50;" ❍. 6 4QDPH ,%3)5 4W\SH 0; 4FODVV ,1. ❍. 66HW6 YLGHV. Page 19. 4QDPH 1RPFDQRQLTXH 4W\SH $3750;62$ 4FODVV ,1&+.
(70) DNS : Les Requêtes (3) 5pSRQVH ❍ 6 GUHTXrWH ❍. 6 ,%3)5. 0;. ❍. 6 YLGH. ❍. 6 3DVFDOLESIU. . 3DVFDOLESIU. $. . DNS : Les Requêtes (4) 5HPDUTXH 3RXUODUpVROXWLRQ#,3!1RPGH0DFKLQHRQQ XWLOLVHSDVXQ IRUPDWGHUHTXrWHLQYHUVH PDLVOHSVHXGRGRPDLQH,1$''5$53$ 5)&
(71). Page 20.
(72) DNS : Les "Resolvers" (1) ❍. ❍. )RQFWLRQV &RUUHVSRQGDQFH1RP!#,3 !55VGHW\SH$ &RUUHVSRQGDQFH#,3!1RP !55VGHW\SH375 #,3 [\]W !UHTXrWHW]\[,1$''5$53$ 5HFKHUFKHGHWRXWHLQIRUPDWLRQGDQVODEDVHGHGRQQpHV GHO HVSDFHGHV1RPV ² XWLOLVDWLRQGXFDFKH 2EMHFWLIV UpGXLUHOHVGpODLVHWODFKDUJHGXUpVHDX UpGXLUHOHWUDYDLOGHV16. DNS : Les "Resolvers" (2) ❍. /H5HVROYHUHVWXQHLQWHUIDFH. 16. $SSOLFDWLRQV. 5(62/9(5. 3DUWLH/2&$/(. 16 3DUWLH',67$17(. Page 21.
(73) DNS : Mise en Oeuvre (1) /HVW\SHVGH6HUYHXUVGH1RPV ❍. ❍. ❍. ❍. ❍. 3DVGHVHUYHXUGXWRXWPDLVXQ5HVROYHU SDVGHUpVROXWLRQGHVQRPVGHVUHVVRXUFHVORFDOHV UpVROXWLRQGHVQRPVGHVUHVVRXUFHVGLVWDQWHV 6HUYHXUVHFRQGDLUH O DGPLQLVWUDWLRQGHVUHVVRXUFHVORFDOHVHVWDVVXUpHSDUXQWLHUV 6HUYHXUSULPDLUH DGPLQLVWUDWLRQGHVUHVVRXUFHVORFDOHV DXWRULWpVXUFHVLQIRUPDWLRQV 6HUYHXUFDFKH PpPRULVHOHVUHTXrWHVSUpFpGHQWHV DXFXQHWDEOHORFDOH 6HUYHXUIRUZDUGLQJ HQULFKLOHFDFKHG XQ RXSOXVLHXUV
(74) DXWUH V
(75) 16. DNS : Mise en Oeuvre (2) /HV)LFKLHUVjFRQILJXUHU. ❍. HWFQDPHGERRW YHUVLRQELQG
(76) RXHWFQDPHGFRQI YHUVLRQ%LQG!
(77). ❍. HWFUHVROYFRQI. ❍. 5pSHUWRLUHURRWQV 5pSHUWRLUHUHVRXUFHV ❍ 5pSHUWRLUHUHYHUVH ❍ 5pSHUWRLUHORFDOKRVW ❍ ❍. Page 22. 5pSHUWRLUHGpILQL GDQVHWFQDPHGERRW.
(78) DNS : Mise en Oeuvre (3) 3RXUWHVWHUXQ16 QVORRNXS ² QVORRNXSUHVVRXUFH ² QVORRNXS !" ² QVORRNXSW\SH P[UHVVRXUFH KRVWV. Page 23.
(79)
Documents relatifs
3) Saut de l’avant dernier bond (PHP, Penultimate Hop Pop) : L’étiquette acheminée est sautée. La vérification d’oTTL devrait être effectuée sans considération de si la oTTL
Disposer d’une supervision directe est bien évidemment un atout majeur, cependant cela pose des questions sur la difficulté de la tâche de prédiction : en effet, contrairement à
[r]
Nous avons cherché à comprendre les logiques dont ils font preuve, en menant des observations et des entretiens filmés in situ, fondant une démarche méthodo- logique à la
La transition des revues sur abonnement vers le modèle de l'open access donne lieu à de nouveaux modes de financement : le Réseau Canadien
This section illustrates first the frequency tracking of a musical signal composed of two piano tones, then the synthesis method of section
While the dominant frequency results from the interaction between the strong shock wave and the boundary layer separation, the secondary oblique shock wave also
Le