[&] Router-A (1.1.1.2), Router-B (1.1.1.3) and Router-C (1.1.1.4) are all connected to the same LAN and configured for PIM Sparse-Mode. Router-B was the first router to transmit a PIM-Hello onto this LAN. Which of these routers will be elected as the PIM Designated Forwarder?
- Router-C
- All of these routers will be PIM Designated Forwarders
- Router-B
- Router-A -- Correct

[&] Which PIM message type is transmitted when a router sees that a multicast message it has transmitted onto a LAN has been duplicated/sent by another router connected to that same LAN?
- PIM-Coup
- PIM-Join
- PIM-Grab
- PIM-Assert -- Correct

[&] When three routers are connected to the same subnet, and all three receive an IGMP Membership Report for a GDA, which router will generate the PIM (*,G) Join and forward it up the Shared Tree?
- The PIM Designated Router -- Correct
- All three routers will do this
- The PIM Designated Forwarder
- The router which serves as the Receiver's Default Gateway

[&] When three routers are connected to the same LAN, and all three have been configured for PIM on their interfaces facing that LAN, how is the PIM Designated Router elected by default if the ONLY command you've configured is "ip pim sparse-mode"?
- Whichever router has the lowest IP address
- Whichever router has the highest PIM priority
- Whichever router transmitted the first PIM Hello packet
- Whichever router has the highest IP address -- Correct