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Question: Introduction to Operating Systems
a) Define the term ‘Operating System' and identify main functions of an operating system.
b) What are the characteristics of a good operating system?
c) What do you understand by the ‘kernel of an operating system'?
d) Define a ‘system call' and‘interrupt'. Give examples of each.
e) Identify main storage structures and give a small description of each.
f) What do you meant by the term multitasking?
Write a short note about schedulers. Processes migrate between the various scheduling queues throughout its life time. The operating system should select for scheduling purpose
summary of what operating system do
Define Instance. An instance is an administrative unit in which components of R/3 systems giving one or more services are grouped together. The services offered by a case are
properies of Batch oriented and interactive operating system.
Write a note about Directory structure with examples. The FreeBSD directory hierarchy is basic to obtaining an overall understanding of the system. The most significan
What are Tree-structured directories We can generalize the directory structure to a tree of arbitrary height. This permits the user to create their own sub directories and to c
As mentioned above, page tables, are lookup tables mapping a process' virtual pages to physical pages in RAM. How would one implement these page tables? The most straightforward
A hard-disk drive reads “120 GB HDD 7200 rpm 3 GB/sec transfer rate”. If the drive has a sector size of 512 bytes, what is the average rotational latency and transfer time to read
Inverted page table In page table the page table has one entry for every page that the process is using. The operating system must translate this reference into a physical memo
Define seek time and latency time. The time taken by the head to move to the appropriate cylinder or track is known as seek time. Once the head is at right track, it must wait
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