• Highest layer (layer N), hardware.

The OS provides application programmers with ….. to invoke services

the primary module has only core functions

Wait queue contains processes waiting to execute on a CPU

It asks the OS to delete it by using the …system call

in direct communication link A link is associated with … processes

in indirect communication link A link is associated with … processes

• Thread pool. works well for asynchronous (cooperating) tasks

A thread is a ... sequence of execution

We can cal global variables as an automatic variables.

Consider Car is a class, from the following line: Car mycar = new Car();

A process can’t create several new processes

if an interrupt occurs to a process and its state is 'Running', it turns into ......... state.

Difficult to implement and extend

Context switch time is a benefit because our multi-core processors need to have a rest from time to another to keep its efficiency.

The process of starting a computer by loading the kernel

Cascading termination means that if a process terminates, most of its children must be terminated as well due to memory low space

Stores state information when an interrupt occurs.

Easier to implement at the system-level

in asymmetric addressing, both sender and receiver name each other.