How can an administrator prevent users with *SECADM and *ALLOBJ authority from changing the
security related system values?

A.
Using SST set the “Allow system value security changes” parameter to 2 (NO).

B.
Register a custom program which blocks the CHGSYSVAL command to the QIBM_QS
V_SECURITY Exit Point.

C.
Change the default for the SYSSECVAL parameter of the Change System Value
(CHGSYSVAL) command to *REVOKE.

D.
Run Change Security Attributes (CHGSECA) command with the System value security (SYS
VALSEC) parameter set to *NO.