What are the differences between an interrupt and a trap? What are their importance? According to Stallings (2012) an interrupt is “a suspension of a process‚ such as the execution of a computer program‚ caused by an event external to that process and performed in such a way that the process can be resumed” (p. 716). Stallings (2012) goes on to say that “interrupts are provided primarily as a way to improve processor utilization. For example‚ most I/O devices are much slower than the processor”
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TECHNOLOGY CHANNASANDRA‚ BANGALORE - 61 UNIX SYSTEM PROGRAMMING NOTES FOR 6TH SEMESTER INFORMATION SCIENCE SUBJECT CODE: 06CS62 PREPARED BY RAJKUMAR Assistant Professor Department of Information Science DIVYA K 1RN09IS016 6th Semester Information Science and Engineering 1rn09is016@gmail.com Text Books: 1 Terrence Chan: Unix System Programming Using C++‚ Prentice Hall India‚ 1999. 2 W. Richard Stevens‚ Stephen A. Rago: Advanced Programming in the UNIX Environment‚ 2nd Edition‚ Pearson Education
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Chapter 2 – Operating System Overview TRUE/FALSE QUESTIONS: 1) An OS should be constructed in such a way as to permit the effective development‚ testing‚ and introduction of new system functions without interfering with service. (True) 2) The OS masks the details of the hardware from the programmer and provides the programmer with a convenient interface for using the system. (True) 3) The ABI gives a program access to the hardware resources and services available in a system through the user
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LINUX vs. WINDOWS The debate on Windows vs. Linux is truly an on going one with no end in site. Regardless how you come at this juncture you are usually a UNIX supporter or a customer of Microsoft OS and products who are grateful for products of Microsoft. We will in the following paragraphs try to compare the advantages and disadvantages of these different systems. We will give a brief description on the cost of these products‚ what kind of market-share these two systems hold‚ the availability
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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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Operating System Security Security is the most important part of an operating system when it comes to keeping the system and its information safe. There are various aspects to the security piece in an operating system; which are protocols‚ kernel and encryption. The UNIX/LINIX‚ Apple and Windows Server 2008 all have protocol‚ kernel and encryption features. These features need to be enabled to the highest level in order to have the most security for each of these operating systems. Even
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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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Network Operating Systems vs. MUOS (Multi-User) Characteristics Different methods of Multi-tasking Multi tasking is when the operating system seems to be performing two or more tasks at the same time‚ i.e. MS Word and MS Access‚ however these tasks are not actually running simultaneously as they are actually resident in memory processor is actually switching between tasks at a very high speed‚ therefore each user sees their own task as having priority. One disadvantage can be that the more
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HISTORY OF OPERATIMG SYSTEMS Operating systems (OS) provide a set of functions needed and used by most application programs on a computer‚ and the linkages needed to control and synchronize computer hardware. On the first computers‚ with no operating system‚ every program needed the full hardware specification to run correctly and perform standard tasks‚ and its own drivers for peripheral devices like printers and punched paper card readers. The growing complexity of hardware and application programs
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OPERATING SYSTEM - FILE SYSTEM http://www.tutorialspoint.com/operating_system/os_file_system.htm Copyright © tutorialspoint.com File A file is a named collection of related information that is recorded on secondary storage such as magnetic disks‚ magnetic tapes and optical disks.In general‚ a file is a sequence of bits‚ bytes‚ lines or records whose meaning is defined by the files creator and user. File Structure File structure is a structure‚ which is according to a required format
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