About the difference between NSR and NSF, which is correct?

Compared with the OSPFv2 packet header, which fields are added in the OSPFv3 packet header?

Network administrator A wants to use ACL to match specific routing entries. Which of the following routing entries will be matched by the ACL rules in the figure? (Multiple choice) acl number 2000 rule 10 permit source 10.0.0.0 0.0.6.0

When troubleshooting a network, if you need to confirm the business traffic path, which of the following tasks may be required? (Multiple choice)

Traditional BGP4 can only manage IPv4 unicast routing information. In order to provide support for multiple network layer protocols, MP-BGP extends BGP-4.
MP-BGP uses address families to distinguish different network layer protocols. Which of the following address families are currently supported? (Multiple choice)