Does anyone else play Monster Hunter World: Iceborne?

What operating system is a smartphone most likely to use? 1.bsd 2.mac os x 3.symbian 4.linux

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?

17. implement the jvm dload instruction for the mic-2. it has a 1-byte index and pushes the local variable at this position onto the stack. then it pushes the next higher word onto the stack as well