Operating Systems Assignment 1 Session: Summer 2013 Faculty of Information Technology UCP Lahore Pakistan Operating Systems Assignment: Introduction and Overview of Operating Systems 150 MARKS Write in your own words to answer the following‚ if you use material from any book website apart from your recommended book please provide so. All work will be assumed yours otherwise. Justify your answers where needed. Explain briefly and concisely 1. You are to procure Linux
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totaled 75% percent of revenues‚ and depreciation expense was $1.5 million. All revenues were collected in cash during the year and all expenses other than depreciation were paid in cash. What were Brandywine’s 2007 net income‚ total profit margin‚ and cash flow? Net income = 12M * (1 - 75%) - 1.5M = $1.5 million Total profit margin = $1.5M/12M = 12.5% Cash flow = 1.5M + 1.5M = $3 million Suppose the company changed its depreciation calculation procedures(still within
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either by an 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
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made for a person‚ family‚ group of people‚ business‚ government or anything else that makes and speaks money. It can also help to establish a planned level of expenditures and it can help to maintain a budget for a company either on an accrual or a cash basis. Structured planning can make all the difference to the growth of the business‚ it will enable businesses to concentrate resources on improving profits‚ reducing cost and increasing returns on investment. Relationship Between Budgeting Management
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4.5.2‚ Linux does not distinguish between processes and threads. Instead‚ Linux treats both in the same way‚ allowing a task to be more akin to a process or a thread depending on the set of flags passed to the clone() system call. However‚ many operating systems—such as Windows XP and Solaris—treat processes and threads differently. Typically‚ such systems use a notation wherein the data structure for a process contains pointers to the
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EXAMPLE OF MULTI-USER OPERATING SYSTEM The common examples of multi-user operating system’ include VMS‚ UNIX‚ and mainframe operating systems which include MVS system. A single user multi-tasking operating system is an operating system is capable of allowing multiple software processors to run at the same time. EXAMPLE OF NETWORK OR DISTRIBUTED SYSTEM Short for Network operating system‚ NOS is the software that allows multiple computers to communicate‚ share files and hardware devices with one
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OPERATING M86-02 8086 BASED MICROPROCESSOR --------------------------------------After power on the system we have the following text displayed on LCD. If the text is not displayed‚ press reset button. (Note reset always brings LCD to this initial position). Press enter to see the main menu as shown The following we describe the function of each command A= ASSEMBLE This command is used to convert input assembly language into the machine language. To activate simply press ‘A’ on main menu
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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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I/We have read and understood the Lancaster University Postgraduate Regulations (http://www.lancs.ac.uk/celt/celtweb/marp) on cheating and plagiarism and state that the work I submit will be my/our own and will not contain any unacknowledged work from other sources. As the author(s) of submitted work in my/our name I/we am/are prepared to undertake a fair and reasonable oral examination of its contents. Research Ethics and Governance I/We have read and understood the Lancaster University
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Operating Systems Assignment #5 Of Chapter 4 Eighth Edition of Operating System Concepts by Avi Silberschatz Peter Baer Galvin & Greg Gagne 2009 4.1 Provide two programming examples in which multithreading does not provide better performance than a single-threaded solution Answer: (1) Any kind of sequential program is not a good candidate to be threaded. An example of this is a program that calculates an individual tax return. (2) Another example is a "shell" program such as
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