UGC-NET/GATE Multiple Choice Questions for Operating System.
Operating system which doesn't support networking between computers is
I/O of computer system is an abbreviation of
both A and B
Consider a system with a two-level paging scheme in which a regular memory access takes 150 nanoseconds, and servicing a page fault takes 8 milliseconds. An average instruction takes 100 nanoseconds of CPU time, and two memory accesses. The TLB hit ratio is 90%, and the page fault rate is one in every 10,000 instructions. What is the effective average instruction execution time?
Rate monotonic scheduling assumes that the :
processing time of a periodic process is same for each CPU burst
processing time of a periodic process is different for each CPU burst
periods of all processes is the same
none of the mentioned
The working set theory of programming behaviour of processes running within an operating system involves
the collection of pages that a process accesses
disk scheduling mechanisms
coalescing holes in memory
assigning the CPU to processes
There are 5 questions to complete.