Which of the following are mandatory when deploying a Connect Secure cluster? (Choose two.)

Which of the following are mandatory when deploying a Connect Secure cluster? (Choose two.)
A . Cluster members must run the same software version.
B . Cluster members must use the same hardware or virtual hardware platform.
C . Cluster members must have their external ports reachable over the internet.
D . Cluster members must always have both their internal and external ports configured.

Answer: A,B

Explanation:

Reference: https://docs.pulsesecure.net/WebHelp/PPS/9.1R8/AG/Topics/PPS_Clustering.htm