Aadd on Group System for Filtered Social Networking
DR. BABASAHEB AMBEDKAR MARATHWADA UNIVERSITY, AURANGABAD Dept of Computer Science and IT, M.Sc CS(sem I) Class Test II, Advance Operating System Date :-5/11/2012 Paper no:-CSC 404 Total Marks:-20 M Duration : 1hour
Q1. Match the following 5M
1 2 3 4 5
Page Map table Inboard memory Auxiliary memory Principle of locality File Map table
a b c d e
Cache One per system One per address space Non volatile Register
Q2 Choose the appropriate option for the following sentences I. ---------- a fixed length block on main memory. (frame, page ,partition ,hole) II.
5M
A--------- allocation policy allows the number of page frames allocated to a process to be varied over the lifetime of the process. ( fixed ,virtual ,variable, static)
III.
Using FIFO some reference string actually generate more page fault for more page frames is known as ----------. ( reference string, Belady anomaly, queue anomaly , page trap)
IV.
----------- incremental allocation of new pages is possible in this scheme without requiring relocation of program address space. ( pure paging, virtual paging, contiguous , dynamic)
V.
-----------is a phenomenon in virtual memory scheme when the processor spends most of its time swapping page rather than executing instructions. ( thrashing , compactation ,burping , dynamic )
Q3 Why is the principle of locality crucial to use if virtual memory?
2M
Q4 Consider the following segment table Seg 0 1 Base 200 70 length 600 100
2M
What are the physical address for the following logical address a) b) 0,350 1,200
Q5 A process references five pages A,B,C,D and E in the following order A, B, C, D, A, B, E, A, B, C, D, E Assume that the page replacement is LRU and MRU.
6M
Find the number of page faults and give its success rate. The system is provided with three page frames.
Q1. Match the following 5M
1 2 3 4 5
Page Map table Inboard memory Auxiliary memory Principle of locality File Map table
a b c d e
Cache One per system One per address space Non volatile Register
Q2 Choose the appropriate option for the following sentences I. ---------- a fixed length block on main memory. (frame, page ,partition ,hole) II.
5M
A--------- allocation policy allows the number of page frames allocated to a process to be varied over the lifetime of the process. ( fixed ,virtual ,variable, static)
III.
Using FIFO some reference string actually generate more page fault for more page frames is known as ----------. ( reference string, Belady anomaly, queue anomaly , page trap)
IV.
----------- incremental allocation of new pages is possible in this scheme without requiring relocation of program address space. ( pure paging, virtual paging, contiguous , dynamic)
V.
-----------is a phenomenon in virtual memory scheme when the processor spends most of its time swapping page rather than executing instructions. ( thrashing , compactation ,burping , dynamic )
Q3 Why is the principle of locality crucial to use if virtual memory?
2M
Q4 Consider the following segment table Seg 0 1 Base 200 70 length 600 100
2M
What are the physical address for the following logical address a) b) 0,350 1,200
Q5 A process references five pages A,B,C,D and E in the following order A, B, C, D, A, B, E, A, B, C, D, E Assume that the page replacement is LRU and MRU.
6M
Find the number of page faults and give its success rate. The system is provided with three page frames.