(Solved) : Multiple Choices Following Questions Select Correct Choices Given Ones Remember Possibly M Q37241405 . . .
Multiple Choices – For each of the followingquestions, select all the correct choices from the given ones.Remember there are possibly MULTIPLE correct choices to eachquestion.
(a) In a system with a single-level paging scheme formemory management, given that the page table is in the main memory,the following is true .
i. It can take two memory cycles for one memory reference.
ii. It always takes one memory cycle for each memoryreference.
iii. It takes fewer cycles to get an instruction than a variablein the memory in the worst case.
iv. Associative registers (also called translation look-asidebuffer) can be used to improve the performance.
(b) In a UNIX system, where the UNIX hybrid method isused for its file storage allocation. The block size is 8K bytesand each disk block address requires 8 bytes
i. To access a data block in a file, the maximum number of indexblocks to be accessed is 3.
ii. To access a data block in a file, the minimum number ofindex blocks to be accessed is 1.
iii. A file in the system can be larger than 2 32 bytes.
iv. The system is efficient for a wide range of file sizes.
(c) In a system where demand paging is used
i. A user can run a program larger than the total physicalmemory.
ii. The Operating System needs to handle page fault interruptsfor user processes.
iii. When a dirty bit for a page in memory is OFF, it must bewritten back to the swapping disk when it is replaced.
iv. A page that is NOT referenced during the process executioncan be in main memory.
(d) Suppose that an operating system usestree-structured directories, the following statements aretrue
i. Both absolute and relative path names can be used.
ii. A directory can be implemented as a file.
iii. Symbolic links to directories should NOT be allowed inorder to enforce the tree structured directories.
iv. A recursive procedure can be used to traverse the filesystem.
(e) In a system with reusable resources only, in orderfor a deadlock to occur, the following conditions musthold
i. There must exist a process that is holding at least oneresource and is waiting to acquire additional resources that arecurrently being held by other processes.
ii. Resources can be preempted.
iii. At least one resource is non-sharable.
iv. There must be a cycle in its resource allocation graph.
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Answer to Multiple Choices – For each of the following questions, select all the correct choices from the given ones. Remember the…
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