: 3 /6 ( N-ISDN (B+D) B+D) (30B+D) B+D) 9 9 (9)A. A. B 6Kb Kbs B. D 6Kb Kbs C. B 64Kb Kbs D. D 64Kb Kbs (B+D) B+D)(30B+D) B+D) B 64Kb KbsD 6 664 ABD(9)C 3/6 4/6 RIP 35 35 RIP 36 36 (35) A B C. D (36) A B6 C5 D. RIP 6 5 35) B 36 36C OSPF 39 (39)A Hello Keepalive C.SPF( ) D.LSU( ) 39 39A OSI OSI (SAP) SAP) Intemet ()A MACBLLCC.IPD C 3 33 (3)A 3 3 CC 4 4 5 (33)A 5 5 CC 6 6 0 3 3A 33 33C SONET OC-3 3 Mb/s 3 3A. 50.336 B. 55.50 C. 6.080 D. 488.30 B P98 5/6 ISO OSI/RM 8 8 8A. B. C. D. B 6/66
7/6 9 8 8 (8)A. 0 0 0 0 (9) A B0 0 0 0 0 B C 0 0 0 0 0 C D 0 0 0 0 0 D 0 0 9 C 0/ 0 000 000 0 0 0000 8/6 8 A C 4 4 (4) A (MPLS) MPLS)IETF B MPLS 4 4 C (4) A. MPLS MPLS PPP D. BMPLS C R 08 7 ; (FEC) (8) D. MPLS (7)A 080 064 CC 090 D096 (8)A 080 064 CC 090 096 A D 0.8 0.8 0.80.64 C FEC LSR LSR LSR 0. 0.0.04-0.04 0.96 4 B 7 B 8 D 9/6 0/6 56 56 57 57 0 96Kb Switch con 58 58 4 4 TDM 56 56A.IP B.MACC.LLC D.PORT 57 57A. B. Telnet C. IP D. SNMP 58 58A.connect B.contrd C.configure D.confirm s TDM TDM 30 0 5 5 (4)A. 3Kb s s 64Kbs s CC 7Kbs s 96Kbs (5)A 3Kbs s 64Kbs s CC 7Kbs s 96Kbs TDM 9.6 096 TDM 0 30 0 9.6 0 30 30 0% 90% 9.6 0 30 30/90% =3 4 D (5): A /6 /6
3 000 CRC 6 GX =X 5 +X 4 +X+ 6 6A. 00 B.. 00 C. 000 D. 0000 000 300 4DPSK 6b/s. b/s. 00 00000000 6 6A300 600 CC 800 000 00 B 44 DPSK 4 300 log 4600 00 00 A B 70ms ms 000 64Kb/s Kb/s 4000bit bit 00 30 30 0000 00 NARQ 8 00 3 3 0 30 30A0.04 B0.6 C0.88 D0.3 3 3A0.46 B0.464 C0.75 D0.83 00 T 4000/(64*0 000 3 f )=6.5ms T p =70 ms 000000 30 6.5/(70*+6.5)=0.0373= 0.04 A 00 (3): W=8 0.04*8=0.83 D (3): W=8 0.04*8=0.83 D 3/6 4/6 IP 9.68.5.9 8 4 4 (4) A9.68.5.7 9.68.5.4 C9.68.5.6 9.68.5.3 9.68.5.9 88 8 4 9) 4 9 00000 4 8 4 000 7 000000 (4) A IP 76 6860 (6) (6) (6)A.55.55.55.0 B. 55.55.48.0 C55.55.5.0 55.55.0.0 (6)A 54 5 CC 0 04 4 6 55.55, 38 6 00 005 55.55.5.0 6 6C 0 04 04 0 6 6C 004 3 WLAN RADIUS 005 [ 4] 5/6 6/6 6 005 005 [ 3] [ ]? (ON-U) U) [ 4] -ABC IEEE 80? - OperatingMode? [ 5] ESSID ( )? UTP IIS5.0 SSL 005 VLAN 005 7/6 8/6
9 5 005 005 AP 4 4 AP AP 3) WNC 4Switch WebDHCP IP Web Internet SSLRADIUS 9/6 0/6 005 [ 6] EncryptionLevel WEP WEP?? 004 6 G.lite lite 4MB MB 003 /6 /6 CRC IP 3 3 3/6 4/6
5/6 3 VLAN 4 VPN 5 6 ADSL 7 8 NAT CISCO IP VLAN Trunk STP CISCO PIX http://www.cc http://www.cc-ie.com/ 6/6 6 Tenenbaum VLAN 7/6 8/6 N ( X xxxxxxx: : n - 0 : 0 n n - 0 -n n 0000000 n n - 0,000000 0, n -n 0,,0000000 -n 9/6 m ( n ( X xxx x xxxxxxx: 0 0 m - * ( - n ), 0 0000000 m - *( ) 0 0 -, 0 000000 m - * ( - n ) - m * -n 0 0 0000000 -, m - *( ) - n * * -m 30/6
3/6 4K A4000H CBFFFH _()_ ()A.80K B.96K C.60K D.9K a 7 7 6 K K0000000000 0 0 00 00 FF (7) A330 C4548 8644 500 CBFFF A3FFF K CB CB0bit-A30bit= = 800 0000000060( 60( K 8644 4K 8644 40964K 45 4096 8 45 330 3/6 7 A 3000Hz Hz Nyquist 6 6 QPSK 7 7 30dB db Nyquist 8 8 (6) A 3000 B 6000 C 000 D 4000 C=B =W bb s L C=Bog L=Wog s) L (b Shannon Shannon CWog (+S/N) (b s) B: W S N (7) A 6Kb/s B Kb/s C 8Kb/s D 4Kb/s (8) A 0Kb/s B 0Kb/s C 30Kb/s D 40Kb/s 6 6B 7 7B 8 8C 33/6 34/6 7 7QPSK / / 44 M4 4 log 4 6000 000 QAM QAM M=6 P 8 8db=0log(S/N) 30=0log S/N S/N 0 3 000 CBog (+S/N) 3000log +000 +000 3000log 0 =30K (CRC) CRC) Gx) x) r r0 Gx) x) r CRC Gx=x 4 +x+ 00 CRC CRC 4 000000 0000/00=00 35/6 36/6 6
37/6 r r r 000000 0000 0000 r - 3 3 k r r r -k+r r=4 4 5 d <=d d d 7-4 k=4,r=3) I 4 I 3 I I r r r 0 r 4 r r 0 0 I 4 I 3 I r I r r 0 38/6 7I 4 4 6I 3 4+ 5I 4 3I + I 4 r r r0 I3 r r I r r0 I r r0 r I4I3I r I4I3I r0 I4II s=r+i4 I3I s=r+i4 I3I s0=r0+i4 II sss0=000 sss0=000 sss0 39/6 Tf / Tp / /3 ETf /(Tf + Tp ) Go Back N W W Tf Tf + Tp E W Tf /(Tf + Tp ) 40/6 0-5 0K P N/(-P) ETf / N(Tf + Tp ) -ptf / (Tf( + Tp ) 9 9 5 0., 0 Mbps 000bit bit 50ms ms ARQ (9) A -( (-00 )0K B (-0 0-5 )0K Wt 7 Wb C 0-5 0K D (-0 0-5 )0K Tf 000/ 000/0000 =(ms) tp=50ms E=7*/(+50* (0) A.4 B.33 C.54 D.69 9 9C 0 0D 0 0/(-0.) =.69 4/6 4/6
43/6 80.3 d v 65% 65% 77% 77% R 0BaseT UTP 00m 00m =a< t 0 t 0 t 0 +a t 0 + t 0 + t 0 ++a = =+a =/(+a) (a) =a> T = = = t 0 +a t 0 ++a = =+a =/(+a) (b) L = L t p + t f d / v+ L / R 0BaseF MMF km km 00BaseT UTPSTP 00m 00m 00BaseF MMF km 4m 000BaseLX MMF 550m 330m SMF 5km 330m 000BaseSX MMF6.5m 300m 000BaseCX 000BaseT MMF50m 550m 330m STP 5m 5m UTP 00m 00m 44/6 MAC MAC MAC CSMA CD CD CSMA CDCSMA CA MAC PCF IEEE 80. MAC DFWMAC( MAC) IEEE 80. DCF 45/6 (DCF) DCF DCF (PCF) PCF MAC PCF DCF DCF 80.a a 54M 5GHz OFDM 80.b M.4GHz 80.i WEP WPA Wi-Fi Protected Access WAPI 46/6 6 IEEE80. 4 4 IEEE80. 4 4B 4 4C 43 43A 44 44C 45 45D DSSS FHSS 43 43CSMA/CA (Collision Avoidance) 80. 4 4 ISM EEE80.MAC 43 43 44 44PCF 44 44 45 45IEEE80.a 6,9, 8436, 48 IEEE80.a IEEE80.a 45 45 03 56Mb/s 4 4A A Roaming B Ad hoc C Infrastructure D DiffuseIR 4 4A A 600MHz B 800MHz C.4GHz D 9.GHz 43 43A A CSMA/CA B CSMA/CB C CSMA/CD D CSMA/CF 44 44A A BCF B DCF C PCF D QCF 45 45A A Mb/s B Mb/s C 5.5Mb/s D 54Mb/s 47/6 48/6
49/6 Dotted Decimal Maximum Binary Example Decimal Example Binary Network IP 3 bits Host 55 55 55 55 8 9 6 7 4 5 3 8 64 3 6 84 8 64 3 6 84 8 64 3 6 84 8 64 3 6 84 7 6 04 0000 0000000 000 0000 7 6 0 0 6 5 4 3 0 9 0000 0000000 00000000 00000000 00000000 0000000 00000000 000000... 8 76 5 43... 0 0 N - = 6 - = 65534 N 3 65534 65535 65536-65534... 50/6 IP VLAN IP 76 6860 (6) (6) (6) (6)A.55.55.55.0 B. 55.55.48.0 VLAN C55.55.5.0 55.55.0.0 (6)A 54 5 CC 0 04 VLAN VLAN PVC 4 6 55.55, 38 6 00 5 55.55.5.0 MAC MAC 6 6C 0 04 04 0 VLAN MAC VLAN 6 6C MAC IP IP VLAN 5/6 5/6 VTP (VLAN Trunking Protocol ) VLAN VLAN VTP (, FDDI, ATM) VTP ICND 3. vlan. vlan 53/6 / NVRAM VTP vlan vlan vlan / NVRAM vlan vlan vlan NVRAM 54/6
55/6 VTP VTP VTP VTP VTP VTP 5 VTP VTP 5. VLAN. 3 --> 4 3 3 4. 3 --> 4 5. VLAN 4. 3 --> 4 5. VLAN 56/6 6 VLAN VLAN VLAN Catalyst 900 64VLAN VLAN VLAN VLAN VLAN VTP VTP ( ) VLAN VLAN 57/6 58/6 Switch(config)# VTP vtp [server transparent] [domain domain-name] [trap {enable disable}] [password password] [pruning {enable disable} Switch #conf terminal Enter configuration commands, one per line. End with CNTL/Z Switch(config)#vtp transparent Switch(config)#vtp domain switchlab 59/6 VLAN STP ( 8 STP Switch#config terminal config# # interface f0/3 config-if# # spanning-tree vlan port-priority priority 0 config-if# # spanning-tree vlan3 port-priority priority 0 config-if# # exit config# # interface f0/4 config-if# # spanning-tree vlan4 port-priority priority 0 config-if# # spanning-tree vlan5 port-priority priority 0 config-if# # end Switch# Switch#config terminal config# # interface f0/3 config-if# # spanning-tree vlan4 cost 30 config-if# # spanning-tree vlan5 cost 30 config-if# # exit config# # interface f0/4 config-if# # spanning-tree vlan cost 30 config-if# # spanning-tree vlan3 cost 30 config-if# # end Switch# 60/6 6
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