Answer Happy

Why might a lock dance be required? O Lock breaking is being used to avoid deadlock. O The system is trying to avoid thrashing. Interrupts have been disabled. O Lock ordering is being used to avoid deadlock O Semaphores are used to implement the locks. Question 22 Which of the following kinds of memory systems is likely to require compaction? Swap space A variable sized partition management system for RAM A paged virtual memory system A log structured file system on a flash drive The FAT file system 0
What is the purpose of a present bit in an operating system? It indicates if a particular page of a process' address space present in RAM has been written It indicates if a particular page address of a process' address space is in the TLB It indicates if a particular page address issued by a process is in one of the process' segments It indicates if a particular page of a process' address space is in RAM It indicates if a particular page of a process' address space present in RAM contains the most recent version of the page data
What is a compulsory miss? An attempt to access an address outside of the process' allocated address space A cache miss occurring during recovery of a partial transaction in a log structured file system. An attempt to access a page that is on disk, but not in RAM A page fault occurring on one of the first few addresses issued by a new process An attempt to access a non-existent item in a special purpose cache