Practice Multicast Questions Now
Start a timed practice session focusing on IP Multicast topics from the ENCOR question bank.
Start ENCOR Practice Quiz →ENCOR Multicast Question Bank (3 Questions)
Browse all 3 practice questions covering IP Multicast for the ENCOR certification exam. Each question includes the full answer and a detailed explanation to help you understand the concepts.
- Question 1Virtualization
Which protocol is used for multicast distribution tree building in PIM Sparse Mode?
Show Answer & Explanation
Correct Answer: BExplanation:PIM-SM builds shared trees via the RP (Rendezvous Point) and can switch to shortest-path trees. IGMP manages group membership on the LAN segment.
- Question 2Infrastructure
What is the purpose of PIM (Protocol Independent Multicast) Sparse Mode?
Show Answer & Explanation
Correct Answer: BExplanation:PIM-SM (Sparse Mode): uses explicit join model — routers only receive multicast if they request it. Initial traffic flows via shared tree (*,G) through the Rendezvous Point (RP). Can switch to shortest-path tree (S,G) for optimal delivery. Uses IGMP (host-to-router) and PIM (router-to-router).
- Question 3Infrastructure
Which IGMP version supports source-specific multicast (SSM)?
Show Answer & Explanation
Correct Answer: CExplanation:IGMPv3 supports source-specific multicast by allowing hosts to specify which sources they want to receive traffic from (INCLUDE/EXCLUDE modes).
Key Multicast Concepts for ENCOR
ENCOR Multicast Exam Tips
IP Multicast questions in ENCOR are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: multicast, igmp, pim, rendezvous point, rp, sparse mode.
What ENCOR Expects
- Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
- Multicast scenarios for ENCOR are frequently mapped to Domain 3 (30%), so read the objective carefully before picking controls or architecture.
- Expect multi-service scenarios where Multicast interacts with IAM, networking, storage, or observability patterns rather than appearing as an isolated service question.
- When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and managed-service best practices.
High-Value Multicast Concepts
- Know the core Multicast building blocks cold: multicast, igmp, pim, rendezvous point.
- Review the edge-case features and limits for rp, sparse mode; these details are commonly used to differentiate answer choices.
- Practice service-integration reasoning: how Multicast pairs with Infrastructure, OSPF Advanced, Network Assurance in real deployment patterns.
- For ENCOR, explain why the chosen Multicast design meets reliability, security, and cost expectations better than the alternatives.
Common ENCOR Traps
- Watch for answers that partially solve the requirement but miss operational constraints.
- Questions in Infrastructure often include distractors that look correct for Multicast but violate least-privilege, durability, or availability requirements.
- Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
- If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.
Fast Review Checklist
- Can you compare at least two Multicast implementation paths and justify which one best fits the scenario?
- Can you map the chosen answer back to Infrastructure (30%) outcomes for ENCOR?
- Can you explain security and access boundaries for Multicast without relying on default-open assumptions?
- Can you describe how Multicast integrates with Infrastructure and OSPF Advanced during failure, scaling, and monitoring events?