Which of the following commands is used to monitor cluster members?

'cphaprob state' queries the ClusterXL high-availability process and displays each cluster member's current operational state - Active, Standby, Down, or Ready - along with member IP addresses and interface details, making it the definitive command for real-time cluster health and role monitoring.

'cphaprob status' is not a recognized subcommand of the cphaprob utility; valid subcommands include 'state', 'list', 'stat', and 'if', so this command will fail.

Running 'cphaprob' without any subcommand does not output cluster member state information - a valid subcommand such as 'state' must be appended for meaningful output.

'cluster state' is not a valid Check Point command; ClusterXL monitoring is performed using the 'cphaprob' utility, not a generic 'cluster' command.