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1 CIU ( ) 2005 ( ) 1 2B A B C D 4 2B 2005 ( ) (88)A 4 B 5 C 6 D 7 (89)A 27 B 28 C 29 D (88) B (89) C 88 B 89 C ( ) 1 2 (1)A B C. D (2)A B C. D 16M (3) (3)A 16 B 20 C 24 D 32 (4) (5) (6) (4)A. B [email protected] 1

2 C. D (5)A. B C. D. (6)A B C. D R ; (8) (7)A 0.80 B C 0.90 D 0.96 (8)A 0.80 B 0.64 C 0.90 D (9)A B C D Internet (10)A B. C. - D (11)A RSA B RC-5 C MD5 D ECC 12 (12)A B C D (13) (13)A B C. D C 14 (14)A B C D. I/O 10 1 R1 R2 R R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 20ms/ R1 4ms (15)A 180ms B 200ms C 204ms D 220ms (16)A 40ms B 60ms C 100ms D 160ms 4K [email protected] 2

3 a 17 (17)A B 8644 C 4548 D 2500 (18) (18)A B C D (19)A B C. D. (20)A B C. D. OSI (SAP) Internet 21 (21)A MAC B LLC C. IP D OSI 22 (22)A B C. D Internet [email protected] 3

4 10 9.6Kb/s TDM 24 TDM 30% 10% 25 (24)A. 32Kb/s B 64Kb/s C 72Kb/s D 96Kb/s (25)A 32Kb/s B 64Kb/s C 72Kb/s D 96Kb/s 4 26 a 6 a 5 a 4 a 3 a 2 a l a 0 S 2 =a 2 +a 4 +a 5 +a 6 S 1 =a 1 +a 3 +a 5 +a 6 S 0 =a 0 +a 3 +a 4 +a 6 S2S1S0= (26)A 6 B 8 C. 11 D 16 (27)A a 3 B a 4 C a 5 D a 6 28 (28)A B C D N-ISDN (2B+D) (30B+D) 29 (29)A B 16Kb/s B D 16Kb/s C. B 64Kb/s D. D 64Kb/s ATM AAL5 LAN AAL5 (30) A. AAL5 B AAL5 C. AAL5 D AAL5 (31) (31)A B C. D [email protected] 4

5 (32)A 2 B 3 C 4 D 5 (33)A 2 B 5 C 6 D 10 R1 34 (34)A R1(config)# ip host R B R1(config)# ip network C R1(config)# ip host R D R1(config)# ip route RIP (35) RIP 36 (35)A B C. D (36)A 1 B 16 C 15 D. (VLSM) (Route Summarization) 37 (37)A IGRP B OSPF C VTP D RIPvl OSPF 38 (38)A B C Dijkstra [email protected] 5

6 D LSA OSPF 39 (39)A Hello B Keepalive C. SPF( ) D LSU( ) BGP4 40 (40)A. BGP4 (Peer) AS B BGP4 (hop-by-hop) C. BGP4 (Supernet) D BGP4 IP (MPLS) IETF MPLS 41 (41)A. MPLS MPLS PPP B MPLS C IP (FEC) D. MPLS /28 42 (42)A B C D (43)A B C D (44)A /18 B C /30 D Web index htm default.htm default.asp ih htm 45 (45)A index htm B. ih.htm C default.htm D default.asp Windows 46 DNS IP (46)A DNSserver B Nslookup C DNSconfig D DNSip 256M RAM Linux (swap) 47 (47)A 128M B 512M C 1024M D 4096M Linux 48 (48)A /bin B /etc C /dev D /root Linux 49 Linux (49)A #help <command> B #show <command> C #man <command> D #1s <command> (ACL) 50 (50)A. ACL B ACL C. ACL D ACL 51 Telnet /24 (51)A access-list 15deny telnet any eq 23 B access-listll5deny udp any eq telnet C. access-list 115deny tcp any eq [email protected] 6

7 D access-list 15deny udp any eq (52)A SMTP B FTP C HTTP D SNMP HTTPS HTTP (53)A IPSec B SSL C SET D SSH (54)A TCP 443 B UDP 443 C TCP 80 D UDP 80 VLAN 55 (55)A.VLAN B (Trunk) VLAN C. VLAN D VLAN Windows 2000 Kerberos PKI 56 Kerberos 57 (56)A. Kerberos PKI B. Kerberos PKI C. Kerberos PKI D. Kerberos PKI (57)A RSA B TGT C DES D LSA Windows ping -n (58) (58)A ping B ping C. D ping Windows tracert -h (59) (59)A B C. D (60) (60)A B C. D IP (61) (62) (61)A B C D (62)A 254 B 512 C 1022 D 1024 Internet (63) (63)A Telnet B RAS C FTP D SMTP TCP/IP (64) (64)A 1~255 B 1~1023 C 1~1024 D 1~65535 (65) (65)A B C. D DOM is a platform- and language- (66) API that allows programs and scripts to [email protected] 7

8 dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification). The document can be further processed and the results of that processing can be incorporated back into the presented (67). DOM is a (68) -based AP1 to documents, which requires the whole document to be represented in (69) while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large 70 documents that do not fit into the memory available for processing. (66) A. specific B. neutral C. contained D. related (67) A. text B. image C. page D. graphic (68) A. table B. tree C. control D. event (69)A. document B. processor C. disc D. memory (70) A. XML B. HTML C. script D. Web Melissa and Love Letter made use of the trust that exists between friends or colleagues. Imagine receiving an (71 ) from a friend who asks you to open it. This is what happens with Melissa and several other similar (72). Upon running, such worms usually proceed to send themselves out to addresses from the victim's address book, previous s, web pages (73) As administrators seek to block dangerous attachments through the recognition of well-known (74), virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to.bat and.cmd plus a whole list of other extensions and will still run and successfully infect target users. Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (75) access to your network. (71) A. attachment B. packet C. datagram D. message (72) A. virtual B. virus C. worms D. bacteria (73) A. memory B. caches C. ports D. registers (74) A. names B. cookies C. software D. extensions (75) A. cracker B. user C. customer D. client ( ) 2005 ( ) [email protected] 8

9 ( ) ( ) (15 ) 1 6 [ ] [email protected] 9

10 1-2 [ 1l(3 )? [ 2](2 ) 1-1 Internet? [ 3](2 ) 1-2? [ 4](3 )IEEE ? 1-2 Operating Mode? [ 5](2 ) ESSID ( ID)? [ 6](3 ) 1-2 Encryption Level WEP WEP?? (15 ) 1 4 [ ] FTTx+LAN 2-1 [ 1] (2 ) [email protected] 10

11 FTTx+LAN? [ 2](3 ) (ONU) 2-1 A B C [ 3](3 ) (1) (3) [ 4](7 ) DHCP DHCP IP IP ( ) ID IP DHCPREQUEST DHCPDISCOVER DHCPACK DHCPOFFER _ IP DHCP _ ARP DHCPDECLINE 1 (2 ) 2 (4) (8) (5 ) (15 ) 1 5 [ ] SSL(Secure Socket Layer) TCP SSL SSL HTTPS Web IIS5.0Web HTTPS [email protected] 11

12 [ 1](3 ) SSL IIS5.0 Web Web Web SSL ITU-T [ 2](3 ) Web http https Web 3-2? [ 3](3 ) Web Web https IE Web ? [ 4](3 ) Web Web 3-2? [ 5](3 ) Web 3-2? (15 ) 1 7 [ ] 4-1 VLAN VLAN VLAN VLAN [email protected] 12

13 [ 1](2 ) VLAN? [ 2](2 ) VLAN VLAN l?? [ 3](3 ) v2 Switch# (1) ( VLAN ) Switch(vlan)# (2) ( v2 ) Switch(vlan)# (3) ( ) [ 4](2 ) Switch l VLAN Switch l (config)#interfacegigabit0 1( 6 ) Switch l (config-if)#switchport (4) Switch l (config-if)#switchport (5) [ 5](2 ) Switchl Switch2 4-1 VLAN Trunk?? [ 6](2 ) Switch l 1216 v2 Switch l (config)#interface fastethernet0/6 ( 6 ) Switch l (config-if)#switchport (6) Switch l (config-if)#switchport (7) [ 7](2 ) VLAN? (15 ) 1 5 [ ] [email protected] 13

14 [ 1] (6 ) R1 / R1 Router>en Router>confterm Router(config)#hostname Rl (1) R1(config-if)#ip address R1(config-if)#no shutdown R1(config-if)#int s0 R1(config-if)#ip address (2) R1(config-if)#no shutdown R1(config-if)#clock rate R1(config-if)#exit R1(config)#ip routing R1(config)#ip route (3) R1(config)#ip classless R1(config)#exit R1#copy run start [ 2] (3 ) R2 R2 Router>en Router#conf term Router(config)#hostname R2 R2(config)#int e0 R2(config-if)#ip address R2(config-i0#no shutdown R2(config-if)#int s0 R2(config-if)#ipaddress R2(config-if)#no shutdown R2(config-if)# (4) R2(config)#ip roudng [ 3] (2 ) ip routing? [ 4] (2 ) ip classless? [ 5] (2 ) copy run start? [email protected] 14

网工新答案

网工新答案 2005 年 5 月 29 日软考 2005 年上半年网络工程师上午试题 ( 参考答案 ) ( 特别声明, 此答案只作参考 ) 本文是经过三审后的 CIU 网工上午参考答案 ( 正确率在 92%-95% 之间, 因为种种原因, 不能与标准答案完全相同, 请大家理解 ) 如