Exam 350-501 topic 1 question 310 discussion

Actual exam question from Cisco's 350-501

Question #: 310
Topic #: 1

Refer to the exhibit. A network engineer is implementing multicast services on CPE-1 and CPE-2. CPE-1 must be configured as the preferred IGMP querier for the
LAN segment. PIM-SM must be implemented on the LAN interfaces with an IGMP version that supports (*, G) joins only. Which configurations must the engineer implement on CPE-1 and CPE-2?

A. On CPE-1: interface GigabitEthernet0/1 ip address 10.0.12.129 255.255.255.128 ip pim sparse-mode ip igmp version 2 On CPE-2: interface GigabitEthernet0/1 ip address 10.0.12.130 255.255.255.128 ip pim sparse-mode ip igmp version 2
B. On CPE-1: interface GigabitEthernet0/1 ip address 10.0.12.130 255.255.255.128 ip pim sparse-mode ip igmp version 3 On CPE-2: interface GigabitEthernet0/1 ip address 10.0.12.129 255.255.255. 128 ip pim sparse-mode ip igmp version 3
C. On CPE-1: interface GigabitEthernet0/1 ip address 10.0.12.130 255.255.255.128 ip pim sparse-mode ip igmp version 2 On CPE-2: interface GigabitEthernet0/1 ip address 10.0.12.129 255.255.255.128 ip pim sparse-mode ip igmp version 2
D. On CPE-1: interface GigabitEthernet0/1 ip address 10.0.12.129 255.255.255.128 ip pim sparse-mode ip igmp version 3 On CPE-2: interface GigabitEthernet0/1 ip address 10.0.12.130 255.255.255.128 ip pim sparse-mode ip igmp version 3

Show Suggested Answer

Suggested Answer: A 🗳️

by Karoly at Feb. 4, 2023, 1:51 p.m.

Comments

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ENTJ

9 months, 3 weeks ago

Can someone please explain how answer C is different from answer A?

upvoted 1 times

RoburPace

9 months ago

The device with the lowest IP address on the subnet is elected the IGMP querier. (IGMPv2)

upvoted 3 times

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12_sdeEQ

1 year, 2 months ago

Selected Answer: A

i agree, A is Correct

upvoted 2 times

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Karoly

1 year, 4 months ago

Selected Answer: A

When an IGMPv2 device receives a general query message, the device compares the source IP address in the message with its own interface address. The device with the lowest IP address on the subnet is elected the IGMP querier. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_igmp/configuration/xe-16-9/imc-igmp-xe-16-9-book/imc-customizing-igmp.html

upvoted 4 times

thejag

1 year, 3 months ago

ip igmp version 2 - for (*, G ) joins only

upvoted 1 times

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