Which two methods will help avoid Split Brain when running HA in Active/Active mode? (Choose two.)

A customer is adopting Microsoft Office 365 but is concerned about the potential security exposure that such a move could mean. The security analyst suggests using Aperture and the Palo Alto Network firewall together to provide data and network security.
What are the two reasons this solution has been suggested? (Choose two.)

Which four actions can be configured in an Anti-Spyware profile to address command-and-control traffic from compromised hosts? (Choose four.)