Which command is used to enable BIDIR-PIM under global configuration mode for Cisco IOS XE Sofware?

Which two conditions must be met before separate ISPs can provide interdomain multicast routing? (Choose two.)

Refer to the exhibit. A network engineer applied configuration on R1 to summarize all ISIS routes, but R2 Is still receiving specific routes from R1. The engineer has confirmed that both routers are configured with the correct summarization configuration, but R1 is not sending the correct summary routes. Which configuration must be applied to router R1 to summarize routes within Level 1?

Refer to the exhibit. Which LSA type is indicated by this router output?

Refer to the exhibit. A service provider technician is working on a multicast issue for a customer.
While checking the multicast table, the technician notices that no flags are present for the (1.1.1.1, 239.1.1.1) entry, yet flags are present for the (1.1.1.1, 232.1.1.1) entry.
Which factor might explain this issue?