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	文章列表 - CCNP

	CCNP新考试大纲的概要
	<DIV>对于组建可扩展的思科网络(BSCI,路由)考试,<BR><BR>新考试(642-901)的内容包括:<BR><BR>实现增强内部网关路由协议(EIGRP) 操作;<BR>实现多区域开放最短路径优先(OSPF) 操作;<BR>描述以死以死IS-IS;<BR>实现思科因特网络操作系统(IOS)的路由功能;<BR>实现边界网关路由协议(BGP)对因特网服务提供商(ISP)的连接;<BR>实现组播转发;<BR>实现因特网协议第六版(IPv6).<BR><BR>而原先考试(642-801)的内容包括:<BR><BR>实现增强内部网关路由协议(EIGRP) 操作;<BR>实现多区域开放最短路径优先(OSPF) 操作;<BR>描述与实现以死以死IS-IS;<BR>实现思科因特网络操作系统(IOS)的高级路由功能;<BR>实现边界网关路由协议(BGP)对因特网服务提供商(ISP)的连接;<BR>描述与实现高级IP编址技术;<BR>描述与实现 IP路由原理.<BR><BR>--------------------------------<BR><BR>对于组建已会聚的思科多层交换网络(BCMSN,路由)考试,<BR><BR>新考试(642-812)的内容包括:<BR><BR>实现虚拟局域网(VLAN);<BR>在分层的网络中运行生成树协议(STP);<BR>实现虚拟局域网(VLAN)间的路由;<BR>实现网关冗余技术;<BR>描述和配置客户机的无限访问;<BR>描述和配置交换网络的安全性能;<BR>配置语音支持.<BR><BR>而原先考试(642-811)的内容包括:<BR><BR>描述和实现在分层的网络中的生成树协议(STP);<BR>描述和实现虚拟局域网(VLAN);<BR>描述和实现虚拟局域网(VLAN)间的路由;<BR>描述和实现一些实用性高的技术;<BR>描述和实现组播转发;<BR>描述和实现交换网络的安全性能; <BR><BR>--------------------------------------------<BR><BR>642-825 实现广域网的安全会聚 ISCW<BR><BR>实现基本的电信工作人员的服务;<BR>实现 Frame-Mode MPLS.<BR>实现站点对站点的 IPSec VPN;<BR>描述网络安全策略;<BR>实现思科设备的防辐射无线电通信(Hardening);<BR>实现Cisco IOS的防火墙;<BR>描述和配置Cisco IOS IPS.<BR><BR><BR><BR>原先考试 642-821 BCRAN  组建思科远程交换网络内容<BR><BR>描述和实现桢中继;<BR>描述和实现远程访问环境下的 PPP;<BR>描述和实现ISDN;<BR>描述和实现 queuing and compression的解决方案;<BR>描述和实现宽带网的连通性;<BR>描述和配置站点对站点的 VPN and AAA;<BR>描述和实现连通性的备份解决方案.<BR><BR>-----------------------------------------------<BR><BR>642-845 ONT 优化会聚思科网络<BR><BR>描述思科 VoIP的实现.<BR>描述 ……
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	发表于:2006-08-23 ┆ 阅读(818) ┆ 评论(0)

	CCNP-CIT for PASS4U 错题纠错
	<DIV> <TABLE style="BORDER-COLLAPSE: collapse" borderColor=#dddddd cellSpacing=0 cellPadding=0 width=360 align=center border=1> <TBODY> <TR height=60> <TD align=middle width=60><IMG alt="" src="http://control.cublog.cn/fileicon/rar.gif" border=0></TD> <TD> <TABLE style="BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width="100%" border=0> <TBODY> <TR height=20> <TD align=middle width=40>文件:</TD> <TD>CCNP-CIT for PASS4U错题纠正.rar</TD></TR> <TR height=20> <TD align=middle width=40>大小:</TD> <TD>796KB</TD></TR> <TR height=20> <TD align=middle width=40>下载:</TD> <TD><A href="http://www.cublog.cn/u/6589/upfile/060811180147.rar">下载</A></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>The last review for this one and correct all of the wrong answers which you should notice if you are preparing for the CCNP-CIT(642-831) exam.</DIV> <DIV>Tomorrow morning I'll take part in the exam.</DIV> <DIV>Just take a rest now, that's enough.</DIV> <DIV> </DIV>
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	发表于:2006-08-11 ┆ 阅读(643) ┆ 评论(0)

	CCNP-CIT-一日十题（8）
	<DIV>1,You are troubleshooting a connectivity problem on an NT host and issue the "route print"DOS command. What will be displayed after </DIV> <DIV>entering a route print command on a Windows NT system?<BR>A. Metric<BR>B. Network mask<BR>D. Gateway address<BR>E. Interface address<BR>Explanation:<BR>The route command with the route parameter prints a route or routes. It will disclose:<BR>1)the network destination 2)the subnet mask 3)the gateway 4)the metric 5)the interface</DIV> <DIV> </DIV> <DIV>2,While logged into the Router TestK router, you issue the following command:<BR>RouterTestK# show vlan<BR>What kind of specific VLAN information will you see from this command?<BR>A. VLAN ID<BR>B. VLAN name<BR>D. The router subinterface for the VLAN<BR>Explanation:<BR>VLAN ID,VLAN name,and the router subinterfaces for the VLAN are included in the output of the show vlan command</DIV> <DIV> </DIV> <DIV>3,The TestKing switched LAN is being redesigned to enhance the performance of the Spanning Tree Protocol(STP) algorithm. Which </DIV> <DIV>design considerations make the STP troubleshooting process easier?<BR>A. Do not set the maxage metric too low<BR>D. Set the network diameter to less than or equal to 7 switches</DIV> <DIV> </DIV> <DIV>4,The LAN users on a TestKing office are unable to reach the other TestKing offices. After some troubleshooting effort, you have </DIV> <DIV>determined that the problem is a default gateway problem somewhere in the network. What should you do to correct this?<BR>B. Check to make sure that all servers and other end systems on the LAN have a default gateway specification<BR>D. If any of these devices does not have a default gateway specified, configure a default gateway using the IP address of a router interface on the directly connected LAN</DIV> <DIV> </DIV> <DIV>5,Trunk:Sets the switch prot to trunk mode and negotiates to become a trunk<BR>  Nonegotiate:specifies that DTP packets are not sent out this interface<BR>  Access:Sets a switch to permanent nontrunking mode<BR>  Dynamic Auto:Sets the switch port to respond.but not actively send DTP frames<BR>  Dynamic desirable:Makes the interface actively attempt to convert the link into a trunk link</DIV> <DIV> </DIV> <DIV>6,What are three common causes for the Spanning Tree Protocol(STP) to fail?<BR>A. a trunk port configured with PortFast<BR>C. unidirectional link<BR>E. a duplex mismatch</DIV> <DIV> </DIV> <DIV>7,A ping command fails on a new Frame Relay connection from a local router to a remote router. What are two possible causes for </DIV> <DIV>this scenario?<BR>A. An encapsulation mismatch has occured<BR>B. No broadcast keyword is found in frame-relay map statements</DIV> <DIV> </DIV> <DIV>8,Which command can reveal detailed connectivity problems between DTE equipment and the service provider's Frame-Relay switch?<BR>C. debug frame-relay lmi</DIV> <DIV> </DIV> <DIV>9,What displays the status of FECN and BECN packets?<BR>C. show frame-relay pvc</DIV> <DIV> </DIV> <DIV>10,Which logging procedure requires the least system overhead on a Cisco router?<BR>C. logging to an internal buffer</DIV> <DIV> </DIV>
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	发表于:2006-08-05 ┆ 阅读(768) ┆ 评论(0)

	CCNP-CIT-一日十题（7）
	<DIV>1,What type of interface will be created when the command ppp multilink is added to an ISDN BRI interface?<BR>E. virtual-access 1<BR>Explanation:<BR>MPPP is a method for splitting, recombing, and sequencing datagrams across multiple logical data links. It was originally motivated </DIV> <DIV>by the desire to exploit multiple bearer channels in ISDN, but it is equally applicable to any situation in which multiple ppp </DIV> <DIV>links connect two systems, including async links<BR>Traffic routed across an MPPP link via its controlling interface will be fragmented, with the fragments being sent across the </DIV> <DIV>different physical links. At the remote end of the link, the fragments are reassembled and forwarded to the next hop toward their ultimate destination.<BR>After MPPP has been successfully negotiated during the LCP phase of PPP negotiation and Challenge Handshake Authentication </DIV> <DIV>Protocol(CHAP) or Password Authentication Protocol(PAP) have completed successfully, a Virtual Access interface will be created by the Cisco IOS Software to represent the MPPP bundle</DIV> <DIV> </DIV> <DIV>2,You're in the midst of troubleshooting a remote network connection to your ISP from router TK1. What could you eliminate as a problem source before you even contact the ISP?<BR>B. Segment between the local router and the CSU<BR>D. Segment between the local CSU and the service provider's switch<BR>Explanation:<BR>Before contacting the ISP for fault isolation, first we should successfully complete the loopback testing on your local and remote </DIV> <DIV>segments. The service provider can not help fixing the local segments between your routers and the local CSU. In this case, we </DIV> <DIV>really only have visibility on the local side. We can test connectivity between the local router and CSU using a loopback test. If that succeeds, we can then try to test the connection between the local CSU and the ISP. If that fails, then we can contact the service provider</DIV> <DIV> </DIV> <DIV>3,During your lunch break your junior administrator made a mistake on the network and is on the phone with a TAC engineer trying to </DIV> <DIV>work it out. You overhear the phone conversation and notice that the engineer assigned to his ticket asks for the "show </DIV> <DIV>interface"and "show protocol"output. Which two situations is the engineer probably investigating?<BR>C. Partial loss of system function<BR>D. Lost data or performance problems</DIV> <DIV> </DIV> <DIV>4,Cisco Technical Assistance Center(TAC) has priority levels.<BR>Priority 1:Production network is down, causing critical impact to business operations if service is not restored quickly<BR>Priority 2:Production network is severely degraded, impacting significant aspects of your business operations<BR>Priority 3:Network performance is degraded.Network functionality is noticeably imparired,but more business operations continue<BR>Priority 4:Customer requires information or assistance on Cisco product capabilities, installation, or configuration</DIV> <DIV> </DIV> <DIV>5,Network modeling:NetSys<BR>  Inventory and software distribution:CRM<BR>  Network utilization:TrafficDirector<BR>  Graphically configure a device:CiscoView<BR>Netsys is an offline tool. It is a complex program that imports Cisco device configuration and then creates a model based on the </DIV> <DIV>configurations. The program is used to model changes to a network before they are actually implemented<BR>Cisco Resource Mananger(CRM) is web-based and among its components there are four essential applications:Inventory </DIV> <DIV>manager,availability manager, syslog analyzer,and software image manager<BR>TrafficDirector obtains traffic information from embedded RMON agents. With this information about different </DIV> <DIV>segments,TrafficDirector can inform you of collision, error,utilization,and broadcast rates.<BR>CiscoView provides real-time device level monitoring,fault management,and troubleshooting,with a Graphic user interface</DIV> <DIV> </DIV> <DIV>6,You've arrived at the job site and you're greeted by your junior administrator who tells you that she's just diagnosed a flapping </DIV> <DIV>link on the Frame Relay network,and asks you what two problems could lead to a flapping link?<BR>A. too much line noise<BR>B. improperly configured keepalives</DIV> <DIV> </DIV> <DIV>7,In Frame Relay, what DLCI number is associated with the ANSI LMI type?<BR>A. 0<BR>Explanation:<BR>The three LMI types and their respective DLCI number's are:<BR> a. Cisco-1023<BR> b. Ansi-0<BR> c. Q933a-0</DIV> <DIV> </DIV> <DIV>8,You have a 512 kbps Frame Relay network, and you are experiencing some network latency with some real-time data because of the time it's taking to serialize packets. What could you do to reduce the delay on this network?<BR>A. Link fragmentation and interleaving<BR>C. Low latency queuing</DIV> <DIV> </DIV> <DIV>9,Your junior administrator is troubleshooting a Windows based end system. You notice that she's just entered the command nslookup. At what OSI layer does she suspect the problem to be at?<BR>E. application<BR>This command displays the DNS name/IP host information, indicating that a problem exists while trying to connect to a web site via HTTP or an email server. Either way, the problem appears with an application not working properly</DIV> <DIV> </DIV> <DIV>10,When troubleshooting a Windows end-system, which command gathers data by identifying the path that a packet takes through the network?<BR>B. tracert<BR>Explanation:<BR>Tracert for Microsoft and tracerout for Cisco will help the network administrator to carry out troubleshooting by gathering the symptoms and identifying the path a packet takes through the network. This utility will show the router hops that the path takes, as well as the latency between each hop<BR></DIV> <DIV></DIV>
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	发表于:2006-08-05 ┆ 阅读(681) ┆ 评论(0)

	CCNP-CIT-一日十题（6）
	<DIV>1,You've just enabled the OSPF process on your router with the command router ospf 1 but the process fails to start, what is </DIV> <DIV>probably causing the problem?<BR>C. All the IP interfaces on the router are down<BR>Explanation:<BR>All OSPF routers need to have a local router ID. For an OSPF router, the IP address assigned to the first interface that comes up is the router ID. If a loopback address is configured, then the IP adress assigned to this interface will become the router ID. If </DIV> <DIV>no IP network are up,the OSPF router will be unable to obtain a router ID, so the entire OSPF process will fail</DIV> <DIV> </DIV> <DIV>2,While troubleshooting a BGP router on the TestKing network, it comes to your attention that the IP routing table isn't being </DIV> <DIV>updated with the IBGP-learned route. What do you suspect is causing this problem?<BR>B. IBGP routes are not synchronized<BR>Explanation:<BR>If BGP synchronization is enabled, which it is by default in Cisco IOS software, there must be a match for the prefix in the IP </DIV> <DIV>routing table in order for an internal(iBGP) path to be considered a valid path. If the matching route is learned from an OSPF </DIV> <DIV>neighbor, its OSPF router ID must match the BGP router ID of the iBGP neighbor. Most users prefer to disable synchronization using </DIV> <DIV>the no synchronization BGP subcommand</DIV> <DIV> </DIV> <DIV>3,The TestKing network is using IS-IS for the interior routing protocol. Which show command could you use to list all the system </DIV> <DIV>IDs of the known IS-IS routers?<BR>C. show isis topology</DIV> <DIV> </DIV> <DIV>4,You're in the midst of troubleshooting an OSPF neighbor establishment over a Frame Relay interface on router TK1. Assuming that you've used the default OSPF network type on this interface, what additional change should you make to the frame network's </DIV> <DIV>configuration?<BR>A. Add the neighbor statements under router ospf<BR>On non-broadcast media such as Frame Relay,X.25, ATM, and Switched Multimegabit Data Service(SMDS), OSPF can run in two modes:<BR> a. NBMA:simulates a broadcast model by electing a desinated router(DR) and a backup designated router(BDR). There are two ways to </DIV> <DIV>simulate a broadcast model on an NBMA network: define the network type as broadcast with the ip ospf network broadcast interface </DIV> <DIV>sub-command or configure the neighbor statements using the router ospf command<BR> b. Point-to-multipoint:treats non-broadcast network as a collecton of point-to-point links by configuring the ip ospf network </DIV> <DIV>point-to-multipoint command</DIV> <DIV> </DIV> <DIV>5,OSPF is configured throughout the TestKing network. What is true about OSPF?<BR>B. OSPF uses an IP address on the router as its router ID<BR>D. To configure the OSPF protocol on a roter,you need at least one active interface configured with an IP address</DIV> <DIV> </DIV> <DIV>6,You want to increase the security of the OSPF process used in the TestKing network. Which authentication types can you configure </DIV> <DIV>on an OSPF interface?<BR>B. Message digest key<BR>C. Plain text authentication<BR>Explanation:<BR>OSPF supports both plain text password and MD5 neighbor authentication</DIV> <DIV> </DIV> <DIV>7,One of the TestKing routers contains a CxBus. What is the speed of this Cisco Extended Bus in Mbps?<BR>B.533<BR>Explanation:<BR>CxBus shorts for Cisco Extended Bus. It is the 533-megabit-per-second(Mbps) data bus in the Cisco 7000 series routers used for </DIV> <DIV>interface processors. It is the high speed backplane used by Cisco 7000 routers</DIV> <DIV> </DIV> <DIV>8,You work as a network administrator at TestKing.com. During initial testking, a new Frame Relay link shows no connectivity </DIV> <DIV>between a local router and a remote router. The show interface command issued on the local router shows that the serial line is up </DIV> <DIV>and the line protocol is down.<BR>Which condition could be causing this problem?<BR>D. LMI type mismatch</DIV> <DIV> </DIV> <DIV>9,You need to troubleshoot some problems with the physical cabling at one of the TestKing remote office branches. Which of the </DIV> <DIV>following tools are effective for checking the physical connection of a cateory 5 UTP network cable?<BR>A. TDR<BR>E. Digital multimeter<BR>Explanation:<BR>At the top end of cable testing equipment are those devices that provide time domain reflectometer(TDR), wire-map, and traffic </DIV> <DIV>monitoring functionality. The more expensive equipment of this kind surpasses the phusical layer and reports on Media Access </DIV> <DIV>Control(MAC) layer information such as frame, error, and utilization statistics.<BR>A digital multimeter can be used to troubleshoot a physical-layer problem in UTP cabling</DIV> <DIV> </DIV> <DIV>10,On one of the TestKing routers, you notice a large number of clocking problems on the serial interface. Which of the following conditions are capable of causing clocking problems?<BR>A. Poor patch panel connections<BR>B. Cables out of specification<BR>C. Incorrect DSU/CSU configuration<BR>D. Several cables connected too far away</DIV> <DIV> </DIV>
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	发表于:2006-08-04 ┆ 阅读(704) ┆ 评论(0)

	CCNP-CIT-一日十题（5）
	<DIV>1,From a TestKing router, you issue an extended ping to a remote host. Which of the following are options that can be specified </DIV> <DIV>when using the extended ping command?<BR>B. The number of successive pings<BR>When a normal ping command is sent from a router, the source address of the ping is the IP address of the interface that the packet </DIV> <DIV>uses to exit the router. If an extended ping command is used, the source IP address can be changed to any IP address on the router. </DIV> <DIV>The extended ping is used to perform a more advanced check of host reachability and network connectivity. The extended ping command </DIV> <DIV>works only at the privileged EXEC command line. The normal ping works both in the user EXEC mode and the privileged EXEC mode. To </DIV> <DIV>use this feature, enter ping at the command line and press 'Return'. You are prompted for the following fields as given in the next section</DIV> <DIV> </DIV> <DIV>2,When troubleshooting an MTU problem, what options in the extended ping utility should you use?<BR>C. Sweep range of sizes<BR>E. Set DF bit in IP header<BR>The Sweep range of sizes option allows you to vary the size of the packets. This can be useful when troubleshooting a MUT problem<BR>The Set DF bit in IP header option specifies whether or not the Don't Fragment(DF) bit is set on the ping packet. This is useful </DIV> <DIV>for checking the MUT along the path to a destination</DIV> <DIV> </DIV> <DIV>3,Which show command can be used to determine if a DTE or DCE cable has been attached to a serial interface?<BR>C. show controller serial</DIV> <DIV> </DIV> <DIV>4,Which Cisco IOS feature allows a network administrator to manipulate the BGP AS path attibute?<BR>D. a route map</DIV> <DIV> </DIV> <DIV>5,The TestKing network is being configured for IS-IS as the routing protocol and you wish to verify the configuration. Which show </DIV> <DIV>command will display IS-IS neighbors,neighbor level, and type, as well as SNPAs?<BR>C. Show clns neighbors</DIV> <DIV> </DIV> <DIV>6,Similar to access lists, policy maps must be mapped to an interface. Although the policy map portion of the configuratioin for prioritizing traffic is complete, the router needs to be informed which interface this policy needs to be applied to.To do this, Use the service-policy interface configuration command to attach a traffic policy to an interface and to specify the direction in which the policy should be applied</DIV> <DIV> </DIV> <DIV>7,At one of the TestKing remote locations, Catalyst 2950 series switch has been attached to a Cisco 2600 series router that will </DIV> <DIV>perform inter-vlan routing devices connected to the switch. Reports indicate that the routing between VLANs is not taking place. </DIV> <DIV>What may be a possible cause for this?<BR>C. Trunking using IEEE 802.1q has not been enabled on the Cisco 2600<BR>In case of 2950/2940 series switches, none of the trunk configuration commands are used. Cisco 2940/2950 series switches only support 802.1q encapsulation which is configured automatically, when trunking is enabled on the interface by using switchport mode trunk command.<BR>Since the encapsulation methods must match on each end of the trunk, the Cisco 2600 must also be configured using 802.1Q trunking</DIV> <DIV> </DIV> <DIV>8,On an Ethernet segment, users are experiencing sporadic connectivity. You issue the following command :show interface ethernet<BR>The command reveals that the interface is up.<BR>What are two other issues to address? Select two<BR>B. Verify that the number of collisions in respect to the number of output packets is less than .1%<BR>C. Use a TDR to check for a jabbering transceiver</DIV> <DIV> </DIV> <DIV>9,What are three possible causes of slow performance on a VLAN in a switched network?<BR>C. Malfunctioning network adapter in a device<BR>D. Duplex mismatch with devices on switch ports<BR>E. Incorrect cable between a device and the switch port</DIV> <DIV> </DIV> <DIV>10,You need to ensure that NTP traffic can pass through access list 101, which is configured on router TK1. Which of the following </DIV> <DIV>choices will allow NTP traffic?<BR>C. access-list 101 permit udp 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255</DIV>
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	发表于:2006-08-04 ┆ 阅读(745) ┆ 评论(0)

	CCNP-CIT-一日十题（4）
	<DIV> </DIV> <DIV>1,You wish to increase the level of availability to the TestKing end users on the network. What is the fundamental </DIV> <DIV>principle behind increasing a network's level of availability?<BR>C. decrease MTTR(mean time to repair) and increase MTBF(mean time between failure)</DIV> <DIV> </DIV> <DIV>2,Router TK1 is configured as a DHCP server on the TestKing network. Which command line would you use to report </DIV> <DIV>duplicate address assignments on TK1?<BR>A. debug ip dhcp server events</DIV> <DIV> </DIV> <DIV>3,The telnet command is helpful tool in troubleshooting network connectivity. You telnet to router TK1 from a </DIV> <DIV>remote host on the network. What can you conclude from this successful telnet connection?<BR>C. it shows that the TCP/IP protocol stack is available and functioning at the destination<BR>explanation:firstly, if you can telnet then you communicated via an application layer hence you do not have an </DIV> <DIV>application layer issue. Since the telnet program proves that there are no problems all the way to the application </DIV> <DIV>layer, the TCP/IP stack must also be functioning since the application relies on these lower layer in order to </DIV> <DIV>work</DIV> <DIV> </DIV> <DIV>4,Which of the following Interet protocols can you use to discover all of the locally attached router addresses?<BR>A. IRDP(ICMP router discovery protocol)</DIV> <DIV> </DIV> <DIV>5,What can you expect to achieve from debugging a serial line?<BR>B. Provide diagnostic information relating to protocol status<BR>D. Provide diagnostic information relating to network activity<BR>Debugging a serial line will ultimately tell you whether a protocol is up or down, and it will give you information of what kind of traffic is going through the line.</DIV> <DIV> </DIV> <DIV>6,While pinging a Cisco 7513's loopback interface, you notice intermittent drops. What commands should you use to troubleshoot?<BR>A. show diag<BR>B. show buffers<BR>A loopback interface is an internal interface that is always up. The only explanation for the pings only working intermittently would be a problem with the router's hardware or will buffer overflow or leak problems.</DIV> <DIV> </DIV> <DIV>7,You enter the following command onto your Cisco Catalyst 5000 switch:<BR>showspan<BR>What are you going to see as a result of it?<BR>D. The switch port being used by a packet analyzer<BR>Show span command is used to display information about the current SPAN(Switched Port Analyzer) configuration. The information includes SPAN source port and SPAN destination port</DIV> <DIV> </DIV> <DIV>8,Which command could you use to see the operations of a trunk port on a switch?<BR>B. show trunk</DIV> <DIV> </DIV> <DIV>9,While performing a traceroute to a host on the internet, you see a series of "P" replies. In a trace output, what does the letter P signify?<BR>D. the protocol is unreachable</DIV> <DIV> </DIV> <DIV>10,You've just finished modifying your routers configuration and want to make the changes permanent. What command would you use to write your new configuration to NVRAM?<BR>B. Write memory</DIV> <DIV><BR> </DIV>
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	发表于:2006-08-03 ┆ 阅读(673) ┆ 评论(0)

	CCNP-CIT-一日十题（3）
	<DIV>1,In the encapsulated data flow process; how many total stages are there?<BR>B. 4<BR>The stages of the encapsulated data flow process are:<BR> a. Encapsulation<BR> b. Transmission<BR> c. Forwarding/Filtering<BR> d. Decapsulation</DIV> <DIV> </DIV> <DIV>2,Which of the following protocols are connectionless?<BR>A.IP<BR>D.UDP<BR>E.Novell IPX<BR>IPX,UDP,IP are connectionless, unreliable transport. Traffic sent using these protocols are delivered on a best effort basis, and they rely on higher layer protocols or the application itself to inform the sender if any data needs to be retransmitted.</DIV> <DIV> </DIV> <DIV>3,During the establishment of a TCP connection; how do hosts choose their initial sequence?<BR>D. Both hosts start at a randomly chosen sequence number</DIV> <DIV> </DIV> <DIV>4,You are a junior network administrator, and your CTO has given you a proper trouble shooting plan to fix a network bug. Sadly, your efforts were unsuccessful.What should you do next?<BR>C. undo all changes, returning the device to their known initial state</DIV> <DIV> </DIV> <DIV>5,What is a primary goal when constructing end-system network configuration documentation?<BR>D. Documentation maintenance</DIV> <DIV> </DIV> <DIV>6,You have been tasked with creating a network baseline for the TestKing network. What is the rational behind building a network baseline model?<BR>B. It is to find and resolve current network issues</DIV> <DIV> </DIV> <DIV>7,What is the concept behind a 'self-healing network'?<BR>B. Preventing interruption to applications and end users after failures occur in the network</DIV> <DIV> </DIV> <DIV>8,Which of the following devices/actions/tools can you use to gather facts before taking an action when managing and troubleshooting a network?<BR>A. cable tester/protocol analyzer<BR>B. network management system<BR>C. documented diagnostics commands</DIV> <DIV> </DIV> <DIV>9,You have been tasked with generating a solution template for the TestKing network. When would it be wise to create a solution template?<BR>C. for high risk solutions that will be deployed more than once</DIV> <DIV> </DIV> <DIV>10,While logged into router TK1, you wish to limit the amount of debug information that you see. What command could you use to filter debugging information on a particular interface?<BR>answer:debug list</DIV>
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	发表于:2006-08-03 ┆ 阅读(707) ┆ 评论(0)

	CCNP-CIT-一日十题（2）
	<DIV>1,In order to be more proactive in the management of the TestKing network, an action plan was created. What step </DIV> <DIV>should an administrator take while in the process of implementing an action plan?<BR>D. Restore your network to a known previous state if the action item does not solve the problem</DIV> <DIV> </DIV> <DIV>2,Which one of the following is the leading cause of lost network availability?<BR>D. Network device outage at single points of failure in the topology</DIV> <DIV> </DIV> <DIV>3,Which of the following components should you include in an End-System Topology Diagram?<BR>A. device illustration<BR>B. operating system<BR>D. connection to the network<BR>E. device name</DIV> <DIV> </DIV> <DIV>4,Which of the following pieces of information are relevant to an end-system network configuration table?<BR>B. dns server address<BR>C. default gateway address<BR>E. operating system and version<BR>F. IP address and subnet mask</DIV> <DIV> </DIV> <DIV>5,Which IOS command could you use to keep track of the exact time and date that a debug output occured at or the </DIV> <DIV>duration of events?<BR>B. service timestamps<BR>R(config)# service timestamps log datatime localtime<BR>R(config)# service timestamps debug datatime localtime</DIV> <DIV> </DIV> <DIV>6,Which of the following protocol can you use with the trace(aka traceroute) command?<BR>A. IP<BR>B. AppleTalk<BR>C. VINES<BR>D. CLNS2</DIV> <DIV> </DIV> <DIV>7,locate cable faults:TDR(time-domain reflectors)<BR>  profile LAN traffic:Network Monitor<BR>  examine DTE to DCE:BERT<BR>  analyze network design:modeling software<BR>  capture and decode packets:protocol analyser<BR>  locate cross talk:cable tester</DIV> <DIV> </DIV> <DIV>8,While performing your battery of routing network tests on the TestKing networks, you come across a remote router </DIV> <DIV>that is NOT routing packets to the central router by way of its point-to-point link. To begin troubleshooting, you </DIV> <DIV>enter the command "show ip interface brief"and to your surprise you see that the interface state is UP/UP. Taking </DIV> <DIV>this information in consideration, which TCP/IP model layer should you begin your troubleshooting efforts?<BR>A. application<BR>B. internet<BR>C. network interface<BR>D. transport<BR>E. network</DIV> <DIV> </DIV> <DIV>9,Which layer of connectivity is tested with the ping command?<BR>E. layer 1-3</DIV> <DIV> </DIV> <DIV>10,For troubleshooting a connection-orientated protocol such as TCP, what things should you focus on?<BR>C. verify sequence numbers<BR>D. verify acknowledgment numbers</DIV> <DIV> </DIV> <DIV> </DIV> <DIV> </DIV>
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	发表于:2006-08-02 ┆ 阅读(687) ┆ 评论(0)

	CCNP-CIT-一日十题（1）
	<DIV>1,Is the following statement true or false?<BR>The Cisco troubleshooting model is based on a rigid framework<BR>answer:False, it should instead to be flexible</DIV> <DIV> </DIV> <DIV>2,Is the following statement true or false?<BR>Systematic approaches are very effective when troubleshooting networks<BR>answer:True</DIV> <DIV> </DIV> <DIV>3,login in:<BR>log in to an undocumented neighboring device<BR>  interface discovery:<BR>discovery relevant information about the device<BR>  document:<BR>use information to build the network configuration table<BR>  diagram:<BR>transfer any information from the network configuration table<BR>  device discovery:<BR>determine if any neighboring devices are undocumented</DIV> <DIV> </DIV> <DIV>4,Documenting the network is important for any network administrator. In which three ways is documentation </DIV> <DIV>beneficial?<BR>B. Managed access<BR>D. Guaranteed accuracy<BR>E. Distribution efficiency</DIV> <DIV> </DIV> <DIV>5,Having a library of standardized symbols and templates contributes to which network documentation guideline?<BR>D. Document consistency</DIV> <DIV> </DIV> <DIV>6,In order to create a network baseline, what three steps should you take in creating this initial baseline?<BR>B. Determine the scope of the domain responsibility<BR>D. Determine the network performance goals<BR>F. Identify the devices and ports of interest</DIV> <DIV> </DIV> <DIV>7,While a network performs at an acceptable level, what should you do in order to create a snapshot of a network </DIV> <DIV>configuration?<BR>A. Establish a baseline<BR>Snapshotrouting is normally used on DDR situations such as ISDN in order to keep dial costs down but it will not </DIV> <DIV>help in this scenario</DIV> <DIV> </DIV> <DIV>8,Which two types of documentation use network information captured from a baseline?<BR>B. network configuration tables<BR>C. topology diagrams</DIV> <DIV> </DIV> <DIV>9,Which step of the troubleshooting model may require that affected users be contacted and that network baselines </DIV> <DIV>be checked?<BR>A. gather symptoms</DIV> <DIV> </DIV> <DIV>10,When a network baseline is first being established, which router CLI command will display information about the </DIV> <DIV>operational status, IP addresses, media type, and interface name for all interfaces?<BR>C. show ip interface brief</DIV>
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	发表于:2006-08-02 ┆ 阅读(679) ┆ 评论(0)