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有很多问题啊!<br><br>OSPF routing uses the concept of areas.What are the **acteristics of OSPF areas? (Choose three)<br>A. Each OSPF area requires a loopback interface to be configured Answer: B, C, E<br>B. Areas may be assigned any number from 0 to 65535<br>C. Area 0 is called the backbone area D. Hierarchical OSPF networks do not require multiple areas<br>E. Multiple OSPF areas must connect to area 0 F. Single area OSPF networks must be configured in area 1<br>Three sites, TestKing1, TestKing2, and TestKing3 are connected via a WAN. At each site a router provides serial connectivity to the Wan and an Ethernet connection to a LAN. All three routers are configured, and the network is functional. Configure and apply an access list will prevent telnet access to<br>the TestKing1 router while allowing all other traffic to pass. The access list should not contain more than three (3) statements and should be applied to the TestKing3 router. The routers have been previously configured with the following specifications:The routers are named TestKing1, TestKing2, and TestKing3.<br>RIP is the routing protocol.The clocking signal is provided on the serial 0 interfaces.All passwords on all routers are "testking".The subnet mask on all the interfaces is the default mask.IP addresses are listed in the **t below.<br>TestKing1 TestKing2 Secret password: testking<br>E0 192.168.1.1 E0 192.168.121.1<br>S0 192.168.118.1 S0 192.168.5.1<br>Secret password: testking S1 192.168.118.2<br>TestKing3<br>E0 192.168.134.1<br>S1 192.168.5.2<br> <br>RtrB#show interface serial0/0<br>Serial0/0 is up, line protocol is up<br>Encapsulation PPP, loopback not set<br>Keepalive set (10 sec)<br>LCP Open<br>Closed: IPXCP<br>Listen: CCP<br>Open: IPCP, CDPCP<br>After reviewing the command output, which of the following are operational on the serial link? (Choose two)<br>A. IPX B. IP C. Compression D. CDP E. Multilink<br>Answer: C, E（应该是B，D）<br>The NCP information 'Open: IPCP, CDPCP' shows the IP and CDP protocols are operational.<br>Incorrect:C---No information related to D---Closed.、<br>E---The serial interface is a P2P interface. F---No information related to<br>48.Which three statements about common elements of the TCP/IP protocol stack are true? (Choose three) BCD<br> A. IP provides connection less service and routing capabilities. <br> B. ARP enables devices to locate the IP address of local devices. <br> C. UDP provides simple connection less service without windowing or acknowledgements. <br> D. ICMP provides connection oriented management data to routers and layer three switches. <br> E. TCP enables devices to send large quantities of data using switching in a connection-oriented manner.<br>43.In which three situations is a hold-down timer reset? (Choose three.) A E F<br> A. When the hold-down timer expires. <br> B. When infinity is finally defined as some maximum number. <br> C. When the router exchanges ** summaries at area borders. <br> D. When the router detect faulty LSPs propagating through the internetwork. <br> E. When another ** is received indicating a new route with a better metric. <br> F. When another ** is received indicating the original route to the network has been restored. <br> G. When the router receives a processing task proportional to the number of links in the internetwork. <br> <br>应该选择A，D<br>OSPF routing makes use of areas. What are the **acteristics of these areas? (Choose all that apply.)<br>A. Hierarchical OSPF networks do not need multiple areas Answer: B, C, E<br>B. Multiple OSPF areas must connect to area 0 C. Single area OSPF networks must be configured in area 1<br>D. Areas can be assigned any number from 0 to 63535 E. Area 0 is called the backbone area<br>F. Each OSPF area need to be configures with a loopback interface<br>In multiple area OSPF networks, all areas must connect to th backbone area which is disgnated Area 0. In<br>Single area OSPF networks, there is no backbone,. There fore the Area is designated Area 1、<br> <br>The ISP assigned Network 207.134.6.0 to TestKing. You are the network administrator at TestKing and<br>would like to configure one router with the commands to access the Internet.<br>Which of the following commands will you use to configure the Gateway Router to allow Internet access<br>to the entire network? (** two options.) Answer: A, E（D？？）<br>A. Gateway(config)# ip route 0.0.0.0 0.0.0.0 207.134.6.1. B. Gateway(config)# router rip Gateway(config-router)# network 207.134.6.0 default<br>C. Gateway(config)# ip route 207.134.6.0 255.255.255.0 Serial0/0<br>D. Gateway(config)# router rip Gateway(config-router)# network 207.134.6.0<br>E. Gateway(config)# ip default-network 207.134.6.0<br>London#show vtp status<br>VTP Version: 2 Configuration Revision: 0 Maximum VLANs supported locally: 64 Number of existing VLANs: 5<br>VTP Operating Mode: Client VTP Domain Name: London VTP Pruning Mode: Disabled<br>VTP V2 Mode: Disabled VTP Traps Generation: Disabled<br>Above is an illustration of the output of the London switch. What is the function of this switch? Answer: C<br>A. Learn and saved VTP configuration in the running configuration.<br>B. Create and change VLANs. C. Passes information about VTP configuration.<br>D. VTP is disabled on this device. E. VTP is not saved to NVRAM.<br>With regard to ISDN, which of the following are true? (Choose all that apply.)<br>A. Legacy DDR can use port information to define interesting traffic.<br>B. Legacy DDR can configure multiple dialer configurations on the same interface.<br>C. Legacy DDR can use ACLs to define interesting traffic.<br>D. HDLC or PPP can be used to encapsulate ISDN D channel information.<br>E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong to multiple dialer pools.<br>F. Dialer profiles cannot use ACLs to define interesting traffic.<br>Answer: C, E, F<br>You are a network technician at TestKing. Due to rapid expansion, TestKing is leaning towards scalable<br>WAN technology. Immediate plans for the company include an additional 7 regional offices with all sites<br>requiring continuous connectivity, but the current head office has no free ports available.<br>Which of the following WAN technologies will meet the requirements? Answer: D<br>A. Frame Relay B. Broadband cable C. ISDN-BRI D. ADSL E. Dedicated PPP/HDLC links F. ISDN <br>ADSL work by using a modem and is always on. The question tells you that the HQ router has no free ports, so by using an ADSL modem, it will be the best choice for this question. The cable modem would also be a good choice, but without much security, the ADSL is the better answer.<br>The ADSL may be a good solution but actually the CCNA course does not include ADSL technology. Because the network requires continuous connectivity while the head office lack of ports, a subinteface solution with Frame-Relay may be the best choice. A.<br>You are a technician at TestKing. Your newly appointed TestKing trainee wants to know what the **acteristics of named access list are.What would your reply be? (Choose all that apply.)<br>A. You can delete individual statements in a named access list. Answer: C, D, E（应该选择A，C，D）<br>B. Named access lists require a numbered range from 1000 to 1099.<br>C. Named access lists must be specified as standard or extended.<br>D. You can use the ip access-list command to create named access lists.<br>E. You cannot delete individual statements in a named access list.<br>F. You can use the ip name-group command to apply named access lists.<br>D: SNMP uses UDP port 161 F: TFTP uses UDP port 69 C: SMTP uses TCP port 25<br>A: TACACS uses TCP port 49 B: Telnet uses TCP port 23 E: HTTP uses TCP port 80<br>You are a technician at TestKing. Your newly appointed TestKing trainee wants to know which services use TCP. What would your reply be? (Choose all that apply.) Answer: B, C, E<br>A. NTP B. NNTP C. SMTP D. SNMP E. HTTPS F. TFTP<br>B: NNTP uses TCP port 119 C: SMTP uses TCP port 25 E: HTTPS uses TCP port 443<br>Incorrect Answers:A: NTP uses UDP port 123 D: SNMP uses UDP port 161 F: TFTP uses UDP port 69<br>Construct the correct parameter sequence used to configure dial-on-demand routing (DDR) on an ISDN<br>BRI interface.<br> <br> <br>At Global configuration mode: dialer-list [listnum] protocol [protocol-type] permit/deny<br>At BRI Interface:dialer-group n ( Enables dialer list on this interface)<br>dialer string string<br>dialer map protocol next-hop-address [broadcast] dial-string<br>First define types of traffic considered interesting. Like IP At interface level define dialer group dial string which is used when dialing only oneSite. Dialer map to be defined when dialing more than one site. Broadcast ensures that copies of broadcasts go to this next-hop address<br> <br>You are the network administrator on TestKing. It has become necessary to prevent accounting<br>department users on the TestKing1 router from accessing the human resources server attached to<br>interface E0 of the TestKing2 router. The following access control list has been created:<br>access-list 19 deny 192.168.16.128 0.0.0.31<br>access-list 19 permit any<br>On which interface and in which direction should this access list be placed to prevent accounting users<br>from accessing the network attached to the E0 interface of the TestKing2 router? Access to other<br>networks should be unaffected.<br>A. TestKing1 S0, out<br>B. TestKing1 E1, in<br>C. TestKing1 E1, out<br>D. TestKing2 S1, in<br>E. TestKing2 E0, out<br>Answer: E<br><br> |
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发表于 2004-4-9 13:50:29
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