4 policies Measure 1(M1), Meausre 2(M2), Measure 3(M3) and Measure 4(M4) with 3 defined network zones : Secure, Public and Restricted
From what we are given,
M1 -> Secure
If M2 -> Public, then M3 -> Public
M4 cannot be in any zone that has M1
If M3 -> Restricted, then M1 -> Restricted
Each policy is applied to atleast one zone
Each zone has atleast one and at most 2 policies.
From the given options
For must be true, among the options
If Measure 3 is applied to restricted zone, Measure 4 must be applied to public zone -> Should be true
Since,
If M3 -> Restricted, => M1 -> Restricted
M1 -> Restricted => M4 cannot be in Restricted
We know M1 is in Secure => M4 cannot be in Secure
=> M4 is in Public
For cannot be true,
Measure 2 and Measure 4 are both applied to the public zone -> Cannot be true
Lets say if this were to be true to check,
Then M2 -> Public and M4 -> Public
But we know that,
If M2 -> Public then M3 Public
But it is also given that, each zone has atmost 3 policies but here we see 3
=> This statement cannot be true
X (Must be true) : If Measure 3 is applied to the restricted zone, measure 4 must be applied to the public zoneY (Cannot be True) : Measure 2 and Measure 4 are both applied to the public zone