Multicast Addressing and Traffic Flow JN0-664 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is the primary role of routers in multicast traffic flow?

   • ARouters convert multicast packets into unicast packets for each receiver.
   • BRouters only forward multicast traffic if the source and receivers are on the same subnet.
   • CRouters generate multicast traffic when a receiver requests it.
   • DRouters replicate and forward multicast packets along a distribution tree to reach all interested receivers.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A network administrator is troubleshooting a multicast issue where a host is receiving traffic for a group it did not join. The administrator suspects a multicast MAC address overlap. Which multicast IP address would share the same multicast MAC address as 239.1.1.1?

   • A239.1.2.1
   • B239.2.1.1
   • C239.1.1.2
   • D239.1.1.129
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A service provider is deploying a new multicast service. The source is a single server, and receivers are spread across multiple sites. The network uses PIM-SM. Initially, receivers join the group and traffic flows via the RP. After a short time, the last-hop router switches to a source tree. What is the primary reason for this switch?

   • ATo allow the use of SSM addressing
   • BTo reduce the latency and optimize the path from source to receivers
   • CTo reduce the number of multicast forwarding entries on routers
   • DTo reduce the load on the source server
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A network administrator is troubleshooting a multicast issue. The router has an (S,G) entry for a group, but the incoming interface is incorrect. What is the most likely cause?

   • AThe router is configured for SSM
   • BThe router is not running PIM
   • CThe router is using a shared tree
   • DThe RPF check is failing
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   Which statement correctly describes the purpose of IPv4 multicast addresses?

   • AThey identify a group of destinations, allowing a single packet to be delivered to all members of that group.
   • BThey are used for broadcast delivery to all hosts on a network segment, regardless of group membership.
   • CThey are used for anycast delivery, where a packet is delivered to the nearest member of a group.
   • DThey identify a single interface on a device, allowing unicast delivery to that specific host.
   Reveal Solution Discussion Select an answer first