Which two Juniper devices are used as a CSO CPE devices(Choose two.)

Which statement about contrail is true?

AppFormix has been deployed in your data center using the Juniper Telemetry Interface(JTI) native sensors. However, the underlay devices have not yet been set up to work with the JTI native sensors.
Which action is required for the JTI native sensors to work properly?

What is a primary difference between NFV and VNF?

Juniper Networks supports which two alternatives to layer 2 loop prevention protocols, such as STP, in an underlay network? (Choose two)