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Exam JN0-648 topic 1 question 38 discussion

Actual exam question from Juniper's JN0-648
Question #: 38
Topic #: 1
[All JN0-648 Questions]

You are deploying PIM source-specific multicast (SSM) for a new multicast messaging service. You have configured the multicast source to use 235.44.123.100 as the multicast address. You are not able to join the PIM SSM multicast feed.
Which two solutions would resolve this problem? (Choose two.)

  • A. Reconfigure the multicast source to use an address in the range of 224.0.0.0 through 224.255.255.255.
  • B. Reconfigure the multicast source to use an address in the range of 232.0.0.0 through 232.255.255.255.
  • C. Add the multicast address to the [edit routing-options multicast ssm-map] stanza.
  • D. Add the multicast address to the [edit routing-options multicast ssm-groups] stanza.
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Suggested Answer: BD 🗳️
by ShrutiNathbuwa at Oct. 14, 2020, 2:36 p.m.

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certman20
Highly Voted 4 years, 4 months ago
BD is correct. ssm-map is not used to "add multicast address", rather it's configured with a policy map including the multicast sources. It is used where IGMPv3 is not supported.
upvoted 6 times
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Kn3rsus
Most Recent 4 years, 1 month ago
certman20 is correct. BD is correct.
upvoted 3 times
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Plinkity_Plonk
4 years, 2 months ago
Certman20 is right. Just look up the command: https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/ssm-groups-edit-routing-options.html
upvoted 4 times
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mixeren
4 years, 3 months ago
BC edit routing-options multicast ? Possible completions: > scope Multicast address scope > ssm-map SSM map definitions > stream-protection Multicast only Fast Re-Route
upvoted 1 times
willyjuliano
4 years, 3 months ago
redadmin@EX-2300-Soporte# set routing-options multicast ? Possible completions: + apply-groups Groups from which to inherit configuration data + apply-groups-except Don't inherit configuration data from these groups asm-override-ssm Allow ASM state for SSM group ranges > backup-pe-group Backup PE group definitions > flow-map Multicast flow map configuration > forwarding-cache Multicast forwarding cache > interface Multicast interface options local-address Local address for PIM and MVPN sessions omit-wildcard-address Omit wildcard source/group fields in SPMSI AD NLRI > pim-to-igmp-proxy PIM-to-IGMP proxy > pim-to-mld-proxy PIM-to-MLD proxy + rpf-check-policy Disable RPF check for a source group pair > scope Multicast address scope + scope-policy Scoping policy + ssm-groups Source-specific multicast group ranges > ssm-map SSM map definitions > stream-protection Multicast only Fast Re-Route > traceoptions Global multicast trace options
upvoted 2 times
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manis0804
4 years, 6 months ago
Yes.. I think Its BC
upvoted 3 times
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SB13
4 years, 6 months ago
Think it is BC
upvoted 3 times
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ShrutiNathbuwa
4 years, 6 months ago
shldn't the answer be BC ?
upvoted 3 times
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