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Question:
a) Each process is represented in the operating system by a process control block (PCB). The PCB contains many pieces of information associated with a specific process. List and describe four pieces of information that can be found in a PCB.
b) Differentiate between an independent process and a cooperating process.
c) List the advantages of process cooperation.
d) i. Briefly describe the producer-consumer problem within the concept of cooperating processes.
ii. To allow producer and consumer processes to run concurrently, there must be a buffer for holding items. The buffer can be filled by the producer and emptied by the consumer, and there are two types of buffer available for this purpose. Describe these two types of buffer.
The different paging techniques are 1. Multilevel paging or hierarchical paging method: In definite cases the page table may consist up to 1 million entries. This would be
What are the three main activities of an operating system in regard to secondary-storage management? a) Free-space management. b) Storage allocation. c) Disk scheduling.
problems of procedure
Present your own fully documented and tested programming example illustrating the prevention of a data race in a parallelised program. This is an example where total number of p
In fixed portioning scheme, what are the advantages of using unequal- size partitions? With unequal-size partitions there are two probable ways to assign process to partitions.
p0A B C D A B C D A B C D 2 0 12 2012 1000 1354 0632 0014
What does the last four digits '0010' of the above dump represent? What action will the Destination node takes when it receives this packet? The last four digits '0010' denotes
In which page replacement policy Balady’s anomaly occurs? FIFO (First in First Out)
What criteria are important in choosing a file organisation?
Define race condition. When various process access and manipulate similar data concurrently, then the outcome of the execution depends on certain order in which the access take
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