1-External fragmentation occurs when a. The total size of the contiguous memory spaces edequate to accomodate the process, yet because of spaces scattered throughout the memory, contiguous allocation can not be done b. Process is allocated a larger space than it actually needs c. the sizes of the tables maintained grow prohibitively large d. No contiguous memory space is available to allocate to a process 2-In the state of the art computer, at which stage a logical address is bound to physical address? a. None of the other choices b. compile time c. load time d. execution time 3-When memory manager figures out that the referenced page is not in physical memory, a. it schedules a page swap in operation while the process is waiting in CPU b. it sends a trap signal to the operating system that, in turn, swaps out the process from CPU to waiting queue so that CPU cycles are not wasted c. none of the other choices d. it sends a trap signal to the operating system that, in turn, swaps out the process from CPU to ready queue so that CPU cycles are not wasted 4-The main difference between segmentation and paging is a. all of the other choices b. page table is larger than segment table c. paging has more internal fragmentation than segmentation d. segments have variable size whereas pages have fixed page size 5-Which of the following is true? a. If "bounded waiting" is not satisfied, the a process may never get a chance to enter its critical section and consequently starvation occurs. b. If progress is not satisfied, then those processes who wish to enter their critical section may not produce an answer to "who goes next?" question. C. All of the other choices d.If "Mutual exclusion", "progress" and "bounded waiting" are satisfied, then critical section problem is solved