Which two are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12c when it is enabled? (Choose two.)

Replacing multiple heavyweight OS processes with lightweight threads reduces context-switching overhead and lowers CPU cycles spent on OS-level process scheduling and management.

Physical I/O is determined by workload patterns and buffer cache effectiveness, not by whether the database uses a multiprocess or multithreaded OS architecture.

The multithreaded architecture improves OS-level resource efficiency but has no effect on serial query execution performance, which depends on execution plan selection and optimizer behavior.

Logical I/O is governed by SQL workload characteristics and buffer cache sizing, not by the threading model used for background database processes.

Threads within a single process share the same virtual address space, eliminating the per-process virtual memory overhead that exists when each background process maintains its own separate address space.