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Exam 350-401 topic 1 question 900 discussion

Actual exam question from Cisco's 350-401
Question #: 900
Topic #: 1
[All 350-401 Questions]

SIMULATION
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Guidelines
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This is a lab item in which tasks will be performed on virtual devices.

• Refer to the Tasks tab to view the tasks for this lab item.
• Refer to the Topology tab to access the device console(s) and perform the tasks.
• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
• All necessary preconfigurations have been applied.
• Do not change the enable password or hostname for any device.
• Save your configurations to NVRAM before moving to the next item.
• Click Next at the bottom of the screen to submit this lab and move to the next question.
• When Next is clicked, the lab closes and cannot be reopened.


Topology
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Tasks
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OSPF is partially configured. Complete the OSPF configurations to achieve these goals:

1. Configure R3 and R20 so they do not participate in a DR/BDR election process in Area 20.
2. Configure R10 so it is always the DR for Area 10. Do not change the router ID.

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Suggested Answer:
by 80085 at Jan. 13, 2024, 8:37 p.m.

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aymanmah
Highly Voted 9 months, 1 week ago
I passed the exam today Most questions are discussed here Maybe 7-10 new questions that are still related to the discussions here Total 88 questions 4 Labs 1- #878 - VRF Configuration (exactly like the one here, with no IPSec) 2- #896 - eBGP Configuration (exactly like the one here) 3- #900 - OSPF Configuration (exactly like the one here) 4- Switching lab with 3 tasks: a) Make a switch use 32 bits for STP port cost path calculations (command: spanning-tree pathcost method long) b) Troubleshoot problem with trunk (ISL / dot1q mismatch) c} Troubleshoot problem with LACP (ports not added to port channel) I hope this helps everyone You guys are awsome
upvoted 29 times
RainHua
3 months, 1 week ago
appreciate for yr sharing!
upvoted 2 times
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kivi_bg
Highly Voted 1 year, 3 months ago
the answer is wrong for the task 1.Just tested it - If you use priority 0 on both routers the routers will stay in 2WAY/DROUTER which means they try to elect DR and BDR and the task ask you to make R20 and R3 to not participate in a election of DR and BDR this means you need to use - ip ospf network point-to-point on both routers interfaces.
upvoted 19 times
TacoGrande
5 months ago
Pg 194 of the Cisco ENCOR 2nd book states: "The non-broadcast or point-to-multipoint network types are beyond the scope of the Enterprise Core exam, but the other OSPF network types are explained in the following sections." I'm not saying the " ip ospf network point-to-point" syntax is wrong, but that Cisco might have had a misstep on this question...
upvoted 1 times
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ERGEGA
9 months, 4 weeks ago
That1s correct, On R20 and R3 area 20 if you put the priority 0 the routers will stay in 2WAY/DROUTER. Ether way on OSPF for not participating on election process there is no except the ip ospf network point-to-point.
upvoted 1 times
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Mizuchan
1 year, 3 months ago
R20 interface eth0/0 ip ospf network point-to-point R3 interface eth0/1 ip ospf network point-to-point R10 interface eth0/0 ip ospf priority 255
upvoted 15 times
Mizuchan
1 year, 3 months ago
Shouldnt we use ospf process id and area in the command? like this: R20 interface eth0/0 ip ospf <process-id> area 20 network point-to-point R3 interface eth0/1 ip ospf <process-id> area 20 network point-to-point R10 interface eth0/0 ip ospf <process-id> area 10 priority 255
upvoted 5 times
ROBZY90
1 year, 1 month ago
Depends on the router model and the testing platform you are using. Tried this using the Boson NetSim environment and it does not support 'ip ospf <process-id> area 10> commands however I agree this would be a more suitable application. Either way the neighbours form a PtP network with no election or no attempt to elect DR or BDR.
upvoted 1 times
TacoGrande
5 months ago
The "ip ospf <process-id> area 20 network point-to-point" command doesn't work on a 3600 router running 12.4 in GNS3...
upvoted 1 times
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06f9c9d
Most Recent 8 months, 2 weeks ago
Guys I passed exam today, I have 7-10 new questions, 88q with 4 labs. 1- #878 - VRF configuration (exactly the same as here, without IPSec) 2- #896 - eBGP configuration (exactly the same as here) 3- #900 - OSPF configuration (First task: R2 to be always DR in AREA 10, Second task: Summarize routes into area 10 on R2) 4- # this lab we don't have on ExamTopics, but first task was to troubleshoot trunk link, second something to create interface e0/0 aggressively i don't remember exactly sorry and third task was to troubleshoot LACP etherchannel ( set the dot1q first, trunk and channel mode to active, after that you will need to go to configuration for portchannel 10 and remove VLAN 1) Thanks everyone and good luck!
upvoted 6 times
zbeugene7
6 months, 2 weeks ago
thank you man
upvoted 1 times
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Amfa
9 months ago
Hi all! I passed the exam yesterday. I got88 questions which still valid in here, maybe couple of them were new. 4 Labs: - 878 (exactly same ) -896 (exactly same ) -900 ( Configure R3 and R20 so they do not participate in a DR/BDR election process, don't use command point-to-point - in this case you have to change OSPF priority to 0 on both interfaces. Second task same. -Troubleshooting L2: a) Make a switch use 32 bits for STP port cost path calculations (command: spanning- tree pathcost method long) b) Troubleshoot problem with trunk (ISL / dot1q mismatch and add vlan 200 to trunk) c} Troubleshoot problem with LACP (use mode active on port channel) I hope this will be useful for you guys! Thanks to everyone for helping solve the questions here. I wish you all the best!
upvoted 5 times
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wengzaii96
9 months ago
Passed today, a total of 88 questions including 4 labs. There are 10-15 new questions during the exam from exam topics. Lab: 878(Excatlu Same), 896(Exactly Same), and 900 need to consolidate the IP range on R2 that goes to R10. 4 Lab is resolving Trunk allowed VLAN, LACP on one of the SW, and spanning port fast. Good Luck Guys
upvoted 3 times
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Swiz005
9 months, 3 weeks ago
I had this LAP in my test. task 1 was DR and task 2 to summarise in AREA 10
upvoted 2 times
Kev7
9 months, 3 weeks ago
And it works in the lab? I had the exam today, I used the ip ospf priority 255 in the interface, but it doesn't work, R10 continues with the DR, I saw that was because R10 had a better loopback interface number, but the lab said you cannot modify the router-id.
upvoted 1 times
Amfa
9 months, 3 weeks ago
To refresh DR/BDR you have to use command "clear ip ospf processes'
upvoted 4 times
Kev7
9 months, 3 weeks ago
I used but it doesn't work too, any other option?
upvoted 1 times
Amfa
9 months, 2 weeks ago
Just tested in eve ng. I had to clear ip ospf process on both routers and after that DR changed to higher priority router (higher priority always win). When I tried to clear ospf process only on one side it didn't work. Kev7 what Labs you had on exam and are those dumbs still valid? or maybe there are new questions? Did you passed?
upvoted 1 times
abrielirus123
2 months, 3 weeks ago
For me, after configuring the OSPF priority to 255 on R10, it was enough to clear the OSPF process on the DR router (R2) only. R2#sh ip ospf nei eth0/1 Neighbor ID Pri State Dead Time Address Interface 10.0.0.0 255 FULL/BDR 00:00:34 10.1.102.2 Ethernet0/1 R2#clear ip ospf 1 process Reset OSPF process 1? [no]: y R2#sh ip ospf nei eth0/1 Neighbor ID Pri State Dead Time Address Interface 10.0.0.0 255 FULL/DR 00:00:38 10.1.102.2 Ethernet0/1
upvoted 1 times
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Dalik
10 months, 1 week ago
900. - the lab was slightly different then the one described here - it had two tasks: 1. R2 should be DR for area 10 - so you must configure e0/1 of R2 with the best priority (I put 255, but I think the priority of R10 e0/0 was default 1 so it is not necessary to use 255) 2. R2 should summarize routes into area 10 - I let the task be - no time to find solution
upvoted 4 times
TacoGrande
5 months ago
My first question was to configure OSPF without using the network command (do it at the interface). My second question was to summarize, /18, the routes shared with R10 from R2.
upvoted 1 times
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wengzaii96
9 months, 1 week ago
I think question 2 shoud be somethings like this, Lo 1 & 2 act as the segment of R1. R2 router ospf 1 area 0 range 10.0.0.0 255.255.0.0 interface Loopback1 ip address 10.0.2.1 255.255.255.0 ip ospf 1 area 0 ! interface Loopback2 ip address 10.0.3.1 255.255.255.0 ip ospf 1 area 0 ! r10 result 10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks O IA 10.0.0.0/16 [110/11] via 10.1.102.1, 00:00:02, Ethernet0/0 O IA 10.2.203.0/24 [110/30] via 10.1.102.1, 00:05:28, Ethernet0/0
upvoted 2 times
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Dalik
10 months, 1 week ago
896. - exactly the same case as described here
upvoted 1 times
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Dalik
10 months, 1 week ago
878. This lab is exactly described here on examtopics. tunnel0 interfaces are already created without tunnel source <interface> configuration and protection solution: - remember ip addresses of tunnel - add the interface tunnel into vrf CORP - assign the remembered IP addresses - configure tunnel source - configure predefine protection ipsec profile - create static routes on both routes in vrf CORP I tried to put interfaces (of both tunnel routers) connecting ISP router into the vrf CORP but I was not able to do it so I return interfaces back to origin state - I am not sure where I did mistake. By the way: the interface to ISP is ospf point-to-point and assigned into area 0 (ip ospf 100 area 0.0.0.0). When I checked routing table (show ip route vrf CORP) I saw the opposite network in the routing table of both routers behind tunnel0 interface so I run on next question.
upvoted 1 times
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Dalik
10 months, 1 week ago
801. this lab had three tasks: 1. PC1 connected over e0/4 should be immediately ready to work when port is UP e0/4 is access port solution: spanning-tree portfast edge (not sure if is OK) 2. problem on trunk link between one of distribution switches (DISTRO-SW) and ACCESS-SW missing VLAN 100 on e0/0 solution: switchport trunk allowed vlan add 100 3. problem with LACP ports e0/2 and 0/3 are not assigned into Portchannel solution: interface range e0/2 - 3 channel-group 1 mode active
upvoted 3 times
zbeugene7
6 months, 2 weeks ago
Thank you
upvoted 1 times
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wengzaii96
9 months, 2 weeks ago
Thak you
upvoted 1 times
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DarekD
10 months, 3 weeks ago
Hi I took the exam today 14.06.2024 I had 89 questions and 5 labs: 900 (the schema was identical but two tasks were completely different: on R3 you had to set LSA filtering and on R2 you had to fit LSA type 3 and type 5 as far as I remember. Another lab had the first task of configuring ospf without using the "network" command the second task I don't remember the schematic of this lab I didn't see on examtopic. Very similar lab to 801, identical to 878, identical to 896. Of these 89 questions I think >15 were completely new not appearing on examtopic.
upvoted 1 times
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MSoares
11 months, 1 week ago
Hello colleagues, I just finished the exam few minutes ago. So, there were like 10-15 new questions that I did not find here. I had 5 labs with slightly changes: - OSPF DR BDR 2 - VRF - LACP - PVST+ - eGBP - ACL & Copp
upvoted 1 times
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yasmiine
11 months, 1 week ago
I don't speak english but i want try to give you some feedback on my CCNP exam if that helps. I passed the exam a few days ago, there are 89 questions and 5 labs : labs BGP (Q896), IPsec Q878, this lab OSPF (Q900) but questions about this lab are a bit different: (if i remember) configure R10 so it will not participate in a DR/BDR election without using the "command network point-to-point". The 2nd question is to make configuration so that R20 will be "BDR". The two others labs are about toubleshooting port channel, create one vlan, trunk in order to make ping between PCs ( this lab is not difficult).
upvoted 3 times
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RasoulZayer
12 months ago
this lab was in the exam today
upvoted 1 times
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JasonPhi
1 year ago
passed the exam today. I got 5 labs: eBGP, VRF tunnel, static IP route VRF, troubleshooting port channel, trunk and spanning tree, and OSPF filter-list
upvoted 3 times
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IgorLVG
1 year, 1 month ago
keep in mind both way, using p-to-p solution and using oncly op ospf priority... i have read in some labs that we requierd not using the first way.
upvoted 1 times
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Mizuchan
1 year, 3 months ago
It looks correct.
upvoted 1 times
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