Correct answer & explanation
✓IGMPv1: No leave message; querier elected by lowest IP address on subnet
IGMPv1 has no leave message and uses a querier election based on IP address; IGMPv2 adds explicit leave and querier election using lowest IP; IGMPv3 adds source filtering (include/exclude) and supports SSM.
About these practice questions
This 350-401 question is part of Courseiva's 1,175-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
How Courseiva writes practice questions · Editorial policy
Same concept, more angles
1 more way this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop each IGMP version on the left to its matching feature on the right.
medium- ✓ P1.IGMPv1: Uses a query/response model with no leave group message
- ✓ P2.IGMPv2: Adds leave group messages and querier election
- ✓ P3.IGMPv3: Adds source filtering (include/exclude lists)
- ✓ P4.IGMPv2: Supports fast leave by sending a leave group message
- ✓ P5.IGMPv3: Allows hosts to specify which sources to receive or block
Why P1: IGMPv1 uses a query/response model; IGMPv2 adds leave group messages and querier election; IGMPv3 adds source filtering (include/exclude).