Blog

Which topic from this course surprised you the most or changed the way you think about how computers work internally? Explain briefly.

Which process state indicates the process is waiting for some external event?

Busy waiting is inefficient mainly because:

Priority Scheduling with Round Robin Consider the following set of processes: Process Burst Time Priority P1 5 2 P2 3 1 P3 6 2 P4 4 3 P5 2 1 Assume the time quantum = 2. Which of the following is the correct execution sequence (Gantt order)?

Consider the following processes scheduled using Shortest-Remaining-Time-First (SRTF) scheduling: Process Arrival Time Burst Time P1 0 7 P2 2 4 P3 4 1 P4 5 4 Which of the following is the CORRECT execution sequence (Gantt Chart)?

A distributed system is best described as:

Considering the code:  #include #include #include #include sem_t empty; sem_t full; int item = 0; void* producer(void* arg) { sem_wait(&empty); item = 100; printf(“Producer produced item\n”); sem_post(&full); return NULL; } void* consumer(void* arg) { sem_wait(&full); printf(“Consumer consumed item = %d\n”, item); sem_post(&empty); return NULL; } int main() { pthread_t p, c; sem_init(&empty, 0, 1); sem_init(&full, 0, 0); pthread_create(&c, NULL, consumer, NULL); sleep(1); pthread_create(&p, NULL, producer, NULL); pthread_join(p, NULL); pthread_join(c, NULL); return 0; } Which statement is CORRECT?

Which sequence correctly protects a critical section using a mutex lock?

Which statement BEST describes a spinlock?

Consider a system where no process is inside the critical section, but processes waiting to enter are never selected. Which requirement of solution to critical-section problem fails?