Question 1mediumdrag order
Study the full multicast explanation →Question 994 of 2,015
Quick Answer
The answer is that the remote RP sends a PIM (S,G) Join toward the source as the final step in MSDP peering for inter-domain multicast. This is correct because MSDP operates between Rendezvous Points (RPs) in different domains to share information about active sources. The process begins with the MSDP peers establishing a TCP connection, after which they exchange Source Active (SA) messages to advertise sources. When the remote RP receives an SA message, it creates (S,G) state and then forwards a PIM (S,G) Join toward the source’s domain, enabling the multicast traffic to flow across the inter-domain boundary. On the ENCOR 350-401 exam, this sequence often appears as a drag-and-drop ordering task, testing your understanding of how MSDP bridges PIM domains. A common trap is confusing the SA message exchange with the PIM Join—remember that the SA message is the *notification*, not the *request* for traffic. Memory tip: "TCP first, SA second, Join third" — think of it as "Talk, Advertise, then Ask."
CCNP IP Multicast Practice Question
This 350-401 practice question tests your understanding of ip multicast. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the steps of MSDP peering for inter-domain multicast into the correct order, from first to last.
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
MSDP peers establish TCP connection between RPs
MSDP peers first establish a TCP connection, then exchange SA messages to advertise active sources; the remote RP receives the SA, creates (S,G) state, and forwards join toward the source.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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IP Multicast — study guide chapter
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IP Multicast practice questions
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FAQ
Questions learners often ask
What does this 350-401 question test?
IP Multicast — This question tests IP Multicast — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: MSDP peers establish TCP connection between RPs — MSDP peers first establish a TCP connection, then exchange SA messages to advertise active sources; the remote RP receives the SA, creates (S,G) state, and forwards join toward the source.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways 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 the steps of MSDP peering for inter-domain multicast into the correct order, from first to last.
medium- ✓ A.RP learns of active source in its domain
- ✓ B.RP sends Source-Active (SA) to MSDP peers
- ✓ C.Peer RP receives SA and creates (S,G) state
- ✓ D.Peer RP sends PIM (S,G) Join toward source
- ✓ E.Traffic flows from source to remote domain
Why A: MSDP allows RPs in different domains to share information about active sources. When an RP learns of a new source, it sends a Source-Active (SA) message to its MSDP peers. The peer RP then creates an (S,G) state and can join the source if there are interested receivers.
Keep practising
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Last reviewed: Jun 18, 2026
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.
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