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Exam 350-501 topic 1 question 329 discussion

Actual exam question from Cisco's 350-501
Question #: 329
Topic #: 1
[All 350-501 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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Configure and verify the OSPF neighbor adjacency between R1 and R2 in OSPF area 0 according to the topology to achieve these goals:

1. Establish R1 and R2 OSPF adjacency. All interfaces must be advertised in OSPF by using the OSPF interface command method. Use Loopback0 as the OSPF ID.
2. There must be no DR/BDR elections in OSPF Area 0 when establishing the neighbor relationship between R1 and R2. OSPF must not generate the host entries /32 for the adjacent interfaces.
3. Enable OSPF MD5 Authentication between both routers at the interface level with password C1sc0!.

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mr_warrior
Highly Voted 2 years, 2 months ago
missing ip ospf authentication message-digest
upvoted 5 times
sharon90
6 months, 1 week ago
can we use tab key and question mark during the lab?
upvoted 1 times
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Mubdir
Most Recent 1 year, 5 months ago
R1: Conf t Router OSPF 10 Router-id 10.1.1.1 exit ! interface e0/0 ip ospf 10 area 0 ip ospf network point-to-point ip ospf message-digest-key 1 md5 C1sc0! ip ospf authentication message-digest exit ! interface loopback0 ip ospf 10 area 0 end ! copy running-config startup-config R2: Conf t Router OSPF 10 Router-id 10.2.2.2 exit ! interface e0/0 ip ospf 10 area 0 ip ospf network point-to-point ip ospf message-digest-key 1 md5 C1sc0! ip ospf authentication message-digest exit ! interface loopback0 ip ospf 10 area 0 end ! copy running-config startup-config
upvoted 1 times
Bandito
1 year ago
Instead of "Router-id 10.2.2.2", I would make it "Router-id int lo0" to be more in line of what is asked in the task.
upvoted 1 times
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cerifyme85
1 year, 8 months ago
Missing Int lo0: to be poit-point ip ospf authentication message-digest
upvoted 1 times
cerifyme85
1 year, 7 months ago
Correction "for the adjacent interfaces".. so only applies to transit links. we dont int lo0 to be p2p
upvoted 1 times
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Seele
1 year, 10 months ago
Pretty sure the "." is not included in the password.
upvoted 1 times
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Benxi
2 years, 1 month ago
and remember to save the configuration :
upvoted 2 times
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mr_warrior
2 years, 2 months ago
and don't think that . is part of the password
upvoted 1 times
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Mo_El
2 years, 2 months ago
any one know what do they mean by "OSPF must not generate the host entries /32 for the adjacent interfaces."? is that mean to filter /32s in the ospf advertisement?
upvoted 2 times
DUsoo
2 years, 2 months ago
Hi, I think this is related to network types. =====" There must be no DR/BDR elections in OSPF Area 0 when establishing the neighbor relationship between R1 and R2."======= --> it means you can use Point-to-point, Point-to-multipoint NB and Point-to-multipoint all those have a No DR and BDR election! ==="OSPF must not generate the host entries /32 for the adjacent interfaces."======== --> Point-to-multipoint NB and Point-to-multipoint both of them generate by default /32 host routes. So it means you can use only Point-to-Point network type!
upvoted 1 times
12_sdeEQ
2 years, 1 month ago
it means should not enable ospf in loopback interface (even with passive-interface)on both routers which is /32 address, in this way /32 IPs are not annonced to ospf neighbor
upvoted 2 times
thejag
1 year, 11 months ago
The loopback interfaces need to be in OSPF and will be /32 but it asks "OSPF must not generate the host entries /32 for the ADJACENT interfaces" which is the E0/0. If the network is point-to-multipoint it generates a /32 so changing to point-to-point will resolve that. https://community.cisco.com/t5/routing/the-32-entry-in-rib-when-running-ospf-on-point-to-multipoint/td-p/4301264
upvoted 3 times
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Worgen44
1 year, 11 months ago
This is incorrect and DUsoo's comment is correct. you can read more about this at: https://community.cisco.com/t5/switching/host-route-being-generated-by-ospf-why/td-p/1420850
upvoted 1 times
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DUsoo
2 years, 2 months ago
. . . ip ospf message-digest-key 1 md5 C1sc0!. ip ospf authentication message-digest
upvoted 3 times
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