Please explain your answer.

Q13- A thread in user mode can: crash the system .access any location in physical memory cause an access violation allocate memory in system space Q14- What is the main purpose of NTDLL? Handle thread creation and destruction Cause transition to kernel mode for system service dispatching Implement the Win32 API functionality Help managed the Windows subsystem Q15- A 64-bit process CANNOT load the following DLLs: 32-bit resource only DLLs 64-bit DLLs 32-bit DLLs 64-bit resource only DLLs