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Problem:
(a) Discuss Distributed File System Caching.
(Your discussion should include the goal and architecture of distributed file system caching and the various possible caching locations together with their corresponding advantages and disadvantages).
(b) (i) In relation to Lamport's logical clock discuss:
? Happened Before Relation. ? Concurrent event.
(ii) Discuss how the Happen Before Relation is implemented using timestamps.
(c) (i) Briefly describe Christian's and Berkeley's physical clock synchronisation algorithms.
(ii) Are externally synchronised clocks also internally synchronised? What about the converse? Explain your answers
Grouping Threads That Execute Similar Functions Thread Groups are generally used to group threads that execute similar functions of the application program. For instance, if
Enhanced Second chance algorithm In this a modify bit is as well used. Now if the ordered pair of reference and modify is (0,0) neither recently used nor modified - the best
For the first assignment you are required to construct a logic circuit onto a copper clad circuit board (vero board). This construction will require the use of planning the positio
Operations that are to be performed on a directory are Search for a file: We are able to find all files whose names match a exact pattern. Create a file: New files requi
Extend task 1 so that the requests are issued by the clients instead of the server. The server now do not use the "all_requests.dat" file. Instead every client thread reads from
Problem 1: (a) The grouping of organisational activities (usually into ‘departments' or larger ‘divisions') can be done in different ways. Outline 7 criteria which can be used
time-stamping It is a method proposed by Lamport, used to sequencing events in a distributed machine without the use of clocks. This process is intended to order events consis
Define a layer that is not of an IO management module MCS that is Management Control System is not of an IO management module
Most process abstractions support processes being destroyed when the program terminates, or in response to a specific kill directive. There are two common implementations, one a "p
Explain FIFO page replacement A FIFO replacement algorithm associates with every page the time when that page was brought into memory. When a page must be changed, the oldest p
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