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Exam 350-501 topic 1 question 162 discussion

Actual exam question from Cisco's 350-501
Question #: 162
Topic #: 1
[All 350-501 Questions]


Refer to the exhibit. An engineer is implementing Auto-RP and reviewing the configuration of the PE-A. Which configuration permits Auto-RP messages to be forwarded over this interface?

  • A. PE-A(config-if)#no ip pim bsr-border
  • B. PE-A(config-if)#ip igmp version 3
  • C. PE-A(config-if)#ip pim sparse-mode
  • D. PE-A(config-if)#ip pim sparse-dense-mode
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Suggested Answer: C 🗳️

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mabrinaldi
Highly Voted 3 years, 6 months ago
Sparse-Dense Mode for Auto-RP A prerequisite of Auto-RP is that all interfaces must be configured in sparse-dense mode using the ip pim sparse-dense-mode https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-2_2_e/multicast/configuration_guide/b_mc_1522e_3750x_3560x_cg/b_mc_3750x_3560x_chapter_010.html
upvoted 10 times
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AlirezaNetWorld
Most Recent 3 months, 1 week ago
Selected Answer: C
C is the most accurate answer. RP is applicable in PIM sparse mode. To activate it, we just need to make this command at the interface level.
upvoted 1 times
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ariasse
6 months, 3 weeks ago
Selected Answer: C
Tested in the Lab; it works with ip pim sparse-mode under interface mode. Also missing Auto-RP configuration here or in another PE belonging VRF. PE-A(config)# ip pim vrf Customer-A send-rp-announce GigabitEthernet0/0 scope 16 ip pim vrf Customer -A send-rp-discovery GigabitEthernet0/0 scope 16
upvoted 2 times
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cerifyme85
1 year, 8 months ago
Selected Answer: D
Auto-rp listener can be used as well, but the options do not include that so "d"
upvoted 1 times
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thejag
1 year, 10 months ago
Selected Answer: D
Sparse-Dense mode is for Auto-RP
upvoted 2 times
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Asif418
2 years ago
Selected Answer: C
The answer is C, this is the implementation of PIM-SM in a VRF
upvoted 3 times
thejag
1 year, 10 months ago
What difference does the VRF make? Please explain.
upvoted 2 times
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