1. Briefly‚ what is an operating system? An operating system serves as a hardware/software interface‚ acts as a repository for common‚ shared routines and defines a platform for constructing and executing application software. 2. An operating system presents an application programmer with a relatively "friendly" hardware/software interface. What does this mean? Why is it important? The user interface‚ sometimes called the shell‚ provides a mechanism for the user and application programs to communicate
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error or by a specific request from a user program that an OS service be performed .Dual-mode Operation allows OS to protect itself and other system components whereas Multimode Operation increasingly CPUs support multi-mode operations. System call provides the means for a user program to ask OS to perform OS tasks on the user program’s behalf. When a system callis executed‚ it is treated by H/W as a S/W interrupt. Timer protects CPU resource from getting stuck by a user program. To ensure OS maintains
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Chapter no | Topic | 1 | Introduction‚ Types ‚ Computer System Overview | 2 | Operating System Structure‚ Components and Functions‚ Virtual Machine | 3 | Process Concept‚ Operation‚ Process scheduling‚ symmetric multi -processing‚ Cooperating Processes | 4 | Thread Concept‚ Thread Vs Process‚ IPC ‚kernel ‚microkernel | 5 | Scheduling‚ Types‚ Scheduling in batch‚ interactive and real-time systems (SJN‚ SJF‚ FIFO‚ LJN‚ round-robin‚ priority scheduling‚ and hybrid schemes). | 6 | Deadlock:
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Practical – 1 Chalk out the storyboard and design of Diary Food Limited. As the name reflects your site Dairy Products and aims at opening on online store. Your storyboard should cover all the features that you plan to have on the site. Design of online dairy products Online shopping Welcome to Online Store List of dairy Products Products Rates Milk 20Rs./Kg Curd 20Rs./Kg
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CS 2203: Operating Systems Centre for Advance Studies in Engineering (CASE) Hand-out 8: Lab 08 Instructions March 2014 Computer Science Department Instructor: Shehreyar Rashid Lab 8: Introduction to Java and Sockets Objectives Write‚ compile‚ and execute Java programs in Linux using command line. Use an IDE to write‚ compile‚ and execute Java programs in Linux. Learn to write client-server application using Sockets. Credits: This lab uses material from Silberschatz‚ Galvin
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separate set of register values and a separate stack. 4.4) Output at LINE C is 5. Output at LINE P is 0. 4.6) What are the two differences between user-level and kernel-level threads? Under what circumstances is one type is better than other? Answer: 1- User-level threads are unknown by the kernel‚ whereas the kernel is aware of kernel threads. 2- On systems using either M: 1 or M: N mapping‚ user threads are scheduled by the thread library and the kernel schedules kernel threads. 3-
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formatted the same in two inventory files‚ you decided to combine their contents into one file. Now you want to determine if there are duplicate entries on consecutive lines in the new file. Which of the following commands enables you to find the duplicate entries? Answer: c. uniq 6. Your friend is using the command comm entryfile‚ but is getting an error message. What is the problem? (Choose all that apply.) Answer: d. It is necessary to specify two files when you use the
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Definition of Operating System: An Operating system is a program that controls the execution of application programs and acts as an interface between the user of a computer and the computer hardware. Need of an operating system: When a program written in a high level language is executed by a computer‚ the following steps are followed… The compiler to translate the program is loaded in the memory. The source program is read and loaded in the memory. The source program is compiled into object program
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These two symphonies can be really easy to recognize by any person‚ since it is so popular‚ and played in many places. The two symphonies are masterpieces and unique in its own way‚ but still there are some similarities between them. Both symphonies have their ups and down‚ it goes from loud to soft‚ slow to swift. Both of them return to course after different verse and you can tell that both of them have similar inspiration or been inspired by each other; came from the same era and the same culture
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Efrain Rincon Jr Professor Yuhas English - 6 6 May‚ 2013 ‘An Occurrence at Owl Creek Bridge’ and ‘The Red Convertible’ ‘An Occurrence at Owl Creek Bridge’ by Ambrose Bierce and ‘The Red Convertible’ by Louise Erdrich both recount sorrowful tales of men during times of war. The stories differ in that ‘An Occurrence at Owl Creek Bridge’ is a story written in reverse‚ where the readers do not truly know the plot until the end- whereas ‘The Red Convertible’ is just a man recounting the story of his
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