Operating Syste...

The working set model is used in memory management to implement the concept of:

If a logical address space of 128 pages of 1024 words each is mapped onto a physical memory of 64 frames, then the number of bits in logical space and physical address space in bits are respectively

In a computer system, the physical address space is 32 bits. The size of the pages is 4 KB. The maximum size of the page table of a process is 72 MB. Each table entry of page contains 2 permission bit,1 valid bit, 1 dirty bit along with the translation bits. What is the length of the virtual address supported by the given computer system? (answer in bits)

A two-level paging scheme uses a Translation lookaside Buffer (TLB). A TLB access takes 10 ns and the main memory access takes 100 ns. What should be the TLB hit ratio (in %), so that effective access time (EAT) is no more than 150 ns?

Consider allocation of memory to a new process. Assume that none of the existing holes in the memory will exactly fit the process’s memory requirement. Hence, a new hole of smaller size will be created if allocation is made in any of the existing holes. Which one of the following statements is TRUE?

A CPU generates 48-bit virtual addresses. The page size is 32 KB. The processor has a translation look-aside buffer (TLB) which can hold a total of 1024 page table entries and is 2-way set associative. The minimum size of the TLB tag is ________bits.

Consider a system with word-addressable memory in which a word is of 4 byte, 32-bit logical addresses memory, 1 kilobyte page size and page table entries of 8 bytes each. What is the size of the page table in the system in Mega word?