本帖最后由 Airui-7 于 2022-5-16 21:46 编辑
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过Lab快9年半了，最后一次重认证了，这次有点像我2006年第一次考CCNA时的感觉，那时不知道什么是题库，840多的分数线，考了790多挂了。 挂了之后才知道有题库这么个东西。今天差点重蹈覆辙，见过的题40道左右，花了2小时，幸运的过了。 没有QQ，平时也不怎么用微信，没有国内手机号，没有支付宝，没能向论坛购入补充题库。上周末把置顶题库大体做了一遍，找出了一些错题，决定约了考试。 考试中点一个没见过，点一个没见过，稍有点绝望吧，可能是岁数大了，也不想了，安心解吧。 2小时10分钟交的卷。点完最后一道题，觉得过的可能性也就30%，其实今天算是幸运的了，抽到了好多排错题，至少能现场排，我对排错多少还是有点信心，真让抽到一堆平时用不上的YANG，SD-Access的理论新题，那就真抓瞎了。 ; i5 ]8 ]+ C2 j1 I- N
之前每次的重认证都会把题库的题大体都做一遍，这次找出的几道错题也刚好让我碰到了，真的是幸运，我估计这次再错个一两道，真就挂了。选项要认真读，尤其是排错。平时工作下班，考试实在不想搞。过几天再准备300-410。
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真的谢谢鸿鹄论坛这样平台，和发战报的考友。 只有置顶题库考友，硬考的话真的还是有难度的。确实需要补充题库。（考前没想到遇到没见过题的比重会这么大，有些大意了。）
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~~~~~~~~~~~~~5.16日更新~~~~~~~~~~~~~ 昨天晚上查了下分数，确实855是险过。 考完回来看置顶题库时忘说了，在见过的40道题中，有些选项的说明是不一样的，有一些变化，换了一种说法叙述。 这个让人很讨厌， 一定要要认真读题。 ~~~~~~~~~~~~~5.16日更新~~~~~~~~~~~~~
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考试内容： ■拖图题 3个没见过，2个见过（CEF和Cloud-有一项关于cloud说明没见过） （1）没见过netconf的拖图题和置顶题库的那个有点像，编程的语法都一样，从上到下的顺序，貌似新题，从置顶题库信息和右侧有用的选项推下来。 running.null 有个prefixes命名（name，100，还是110？记不清了） 再往下它少了route-map 的seq No. 最后再match一个刚才的Prefix。 （右边还有2，3个多余的选项） 这道题也可以证明置顶题库内类似贴图题最上面的选项应该是“target” （2）还有关于JSON的拖图题， 也是一点点推下来，先import Json 中间记得有个except，接下来选了一个open，最后一个选了close。 完全没见过这个。（不知道对错） （3）还有EEM的拖图题，那个就3个空好像。
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■选择题（只有大概40多道见过，出自论坛置顶题库，剩下的多少出自补充题库，多少是新题，本人不知道。） 因为太多，只记得自己的选项。 （1）关于DNA Center的我选的Developer Tool....其他的选项不太合理。 （2）两台PE，4个节点，PE的一个接口上选择那条接口配置下面有vrf forward的命令的选项。 （3）ERSPAN有两道，一道是置顶题库里的。另一个现场排的，给出了镜像source的命令，让在选项里选择关于destination的配置。不难，基础配置。 （4）关于YANG的问题不少 （5）NAT排错2道，10.1.1.1和10.1.1.2 静态NAT转为20x.x.x.x有图多选。 （6）关于Control-plane下Copp SSH变形题，加了Telnet，注意选项里挂sevice-policy列表是的方向in。有out的选项，差点选错，两个选项一模一样，只是一个in一个out。 （7）有个关于SD-Access问关于无线接入设备时谁来响应anycast。之前查资料，记得是edge node。就选了Fabric edge node。 （8）有个关于StackWise的master和member的题，平常工程中，Master重启后，会发生交换机角色的变化，就选了master reset的选项。（印象中，如果加电设备中加入更高优先级的设备，角色不会发生变化） & `0 e3 ~- w6 t/ Z% G' B+ ~
还有一些还有一些网络排错题，真记不清了， * w, E3 v: {7 U. `& v
下面是置顶题库中的一些修正。（有不同意见的话，欢迎讨论） # V9 V# W7 I* F% ?
QUESTION 462 第1空-应该 target 其他部分正确。
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QUESTION 436 Refer to the exhibit.POSTMAN is showing an attempt to retrieve network device information from Cisco DNA Center API. what is the issue? A. The URI string is incorrect B.The token has expired C. Authentication has failed- ~6 ?& t! R7 a% h6 R* \/ f
D. The JSON payload contains the incorrect UUID Correct Answer: D 应该为 A
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QUESTION 432 Which two operational models enable an AP to scan one or more wireless channels for rouge access points and at the same time provide wireless services to clients? (Choose two) A. Sniffer B.Rouge detector C. Local D.FlexConnect E.Monitor Correct Answer: C E 应该为 C D 关于这两个的解释。 + FlexConnect, formerly known as Hybrid Remote Edge AP (H-REAP), mode: allows data traffic to be switched locally and not go back to the controller. The FlexConnect AP can perform standalone client authentication and switch VLAN traffic locally even when it’s disconnected to the WLC (Local Switched). FlexConnect AP can also tunnel (via CAPWAP) both user wireless data and control traffic to a centralized WLC (Central Switched).
6 m- w. o% `( X1 s: i, S+ Monitor mode: does not handle data traffic between clients and the infrastructure. It acts like a sensor for location-based services (LBS), rogue AP detection, and IDS
这个题今天也出现了。选了CD % x( W+ f0 d1 e j3 K
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QUESTION 496 A network engineer configures a new GRE tunnel and enters the show run command. What does the output verify? A. The tunnel keepalive is configured incorrectly because they must match on both sites B.The tunnel destination will be known via the tunnel interface C.The tunnel will be established and work as expected D.The default MTU of the tunnel interface is 1500 byte. Correct Answer: C 应该是 B 解释： turned on OSPF on all active interfaces (with the “network 0.0.0.0 255.255.255.255 area 0” command). So on SiteB the tunnel interface (192.168.100.2) is also running OSPF. When SiteA receives the OSPF advertisement from SiteB, it realizes it can reach the other side of the tunnel via OSPF (and it would not use the default route any more). In other words, it reaches the tunnel destination through the tunnel itself -> This causes “recursive routing” error. （今天考到）
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QUESTION 537 A customer wants to provide wireless access to contractors using a guest portal on Cisco ISE. The portal is also used by employees. A solution is implemented, but contractors receive a certificate error when they attempt to access the portal. Employees can access the portal without any errors. Which change must be implemented to allow the contractors and employees to access the portal? A.Install a trusted third-party certificate on the Cisco ISE B.Install an internal CA signed certificate on the Cisco ISE. C.Install a trusted third-party certificate on the contractor devices. D.Install an internal CA signed certificate on the contractor devices. Correct Answer: B 应该是 A % `: { W9 g9 T1 U3 @) \
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QUESTION 384 Which action completes the configuration to achieve a dynamic continuous mapped NAT for all users? A. Increase the NAT pool size to support 254 usable addresses B. Reconfigure the pool to use the 192.168.1.0 address range C. Configure a match-host type NAT pool
( E5 U! T" _* O; ?# m1 g: wD. Configure a one-to-one type NAT pool Correct Answer: C 应该是 A 地址池不够用，就算结尾加关键字match-host也无意义。 ( k3 F6 }. |8 o( Z M) R1 t7 c
8 C* V- u2 R, h) r kQUESTION 376 A customer has a pair of Cisco 5520 WLCs set up in an SSO cluster to manage all APs. Guest traffic is anchored to a Cisco 3504 WLC located in a DMZ. Which action is needed to ensure that the EolP tunnel remains in an UP state in the event of failover on the SSO cluster? A. Enable default gateway reachability check B. Use the same mobility domain on all WLCs C. Use the mobility MAC when the mobility peer is configured D. Configure back-to-back connectivity on the RP ports. Correct Answer: B 应该是 C Explanation: In order to keep the mobility network stable without any manual intervention and in the event of failure or switchover, the back-and-forth concept of Mobility MAC has been introduced. 参考: https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-5/High_Availability_DG.html
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- S/ S c1 ?2 p8 v3 x7 x" lQUESTION 415 What is a characteristic of para-virtualization? A. Para-virtualization guest servers are unaware of one another B. Para-virtualization allows direct access between the guest OS and the hypervisor C. Para-virtualization allows the host hardware to be directly accessed D. Para-virtualization lacks support for containers Correct Answer: C 应该是 B
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QUESTION 267 In a wireless Cisco SD-Access deployment, which roaming method is used when a user moves from one access point to another on a different access switch using a single WLC? A. Layer 3 B. inter-xTR C. auto anchor D. fast roam 4 P' s. n1 r. q
Correct Answer: D 应该是 B 当WLAN上的客户端从一个接入点漫游到另一个接入交换机上的另一个接入点时，它就叫Inter-xTR，map server更新了客户端位置（RLOC）信息。还有就是，本地客户端数据库也是更新了新关联的接入点的信息。 （这个题今天考试出现了，我选了B）
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# b* f8 Y* S. C2 x- q: i; rQUESTION 271 Cisco DNA Center has obtained the username of the client and the multiple devices that the client is using on the network. How is Cisco DNA Center getting these context details? A. Those details are provided to Cisco DNA Center by the Identity Services Engine B. The administrator had to assign the username to the IP address manually in the user database tool on Cisco DNA Center C. User entered those details in the Assurance app available on iOS and Android devices D. Cisco DNA Center pulled those details directly from the edge node where the user connected # i7 n$ ^, T2 _% \
Correct Answer: D 应该是 A ++++You can create a network hierarchy that represents your network’s geographical locations. Your network hierarchy can contain sites, which in turn contain buildings and areas. You can create site and building IDs to easily identify where to apply design settings or configurations later.
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虽然现在考试置顶题库占的比例变少了，但有错题的话大家还是注意些， 要是没有做题的习惯，估计这次我应该会挂掉。 * Y! y" w m- w: d- l3 B0 ]
最后祝大家都顺利通过！ # b# E9 z8 P. i/ z+ ?
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发表于 2022-5-15 18:48:25
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