Suppose there are N workers concurrently running the following worker function with arbitrary op_code parameters. As we can see, there are two different semaphores r0 and r1 declared in the following code.  They are respectively initialized with value R0 and R1. N, R0, and R1 are all positive integers. do_task_A() and do_task_B() functions won’t get stuck.    1 sem_t r0;   // Initialized with value R02 sem_t r1;   // Initialized with value R134 void *worker(void *op_code) {5 switch (*(int *)op_code) {6 case 0:7 sem_wait(&r0);8 sem_wait(&r1);910 do_task_A();1112 sem_post(&r1);13 sem_post(&r0);14 case 1:15 sem_wait​(&r1);16 sem_wait​(&r0);1718 do_task_B();1920 sem_post​(&r0);21 sem_post(&r1);22 }23 }

What is the maximum number of threads that could be executing at the same time?

A semaphore should be initialized to 0 to use it as a mutex lock.

If a thread releases the resources it is holding because it cannot acquire the remaining resources it needs then deadlock cannot occur.

If the initial values for the semaphore is S = 0, A = 0, B = 0, how many times “1” will be printed?

Reactions between CO2 and H2 in mid-ocean ridge hydrothermal systems produce (choose all that apply):

The deposition of Banded Iron Formation (BIF) as early as 3.0 Ga can only be explained by the existence of early oxygenic photosynthesis.

Match the geological location/source on the left with the evidence for life on the right. Note: one of the choices on the right should be used TWICE.

A cladogram is reconstructed from the distribution of primitive characters which are used to identify branching events.

Mineral surfaces in the vicinity of hydrothermal vents are thought to have impeded the development of the first self-replicating biological polymers.