A Full Connectivity Upgrade of a cluster:
A.
Treats each individual cluster member as an individual gateway.
B.
Requires breaking the cluster and upgrading members independently.
C.
Is only supported in minor version upgrades (R70 to R71, R71 to R77).
D.
Upgrades all cluster members except one at the same time.
Isn’t R70 to R71 a major upgrade?
Love, Brad
right, it is according to the Check Point Software Support Timeline
https://www.checkpoint.com/services/lifecycle/support-periods.html
https://sc1.checkpoint.com/documents/R76/CP_R76_Installation_and_Upgrade_Guide-webAdmin/16454.htm#o16514
Understanding a Full Connectivity Upgrade
The Full Connectivity Upgrade (FCU) method assures that synchronization is possible from old to new cluster members without losing connectivity. A full connectivity upgrade is only supported from R76 to a future minor version that specifically supports FCU.
Connections that have been opened on the old cluster member will continue to “live” on the new cluster member.
according to this, R70–>71 would not be supported in FCU anyways
C. Full Connectivity Upgrade was discontinued after R75..so you can still use it to go from R70 to R71
sk107042
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk107042
Full Connectivity Upgrade (FCU):
This upgrade method is considered obsolete and not supported since R75 GA.
C. Is only supported in minor version upgrades (R70 to R71, R71 to R77).
I agree with florentjustin.