How to maintain and optimize Microsoft® Windows Vista® operating system February 23‚ 2011 IT/286 University of Phoenix Table of Contents Basic System Checks ……………………………………………………………………………………. 3 Hard drive state ………………………………………………………………………………… 3 Temporary files ………………………………………………………………………………… 5 Fragmentation ………………………………………………………………………………….. 6 Windows Updates ………………………………………………………………………………………... 8 Windows Firewall ………………………………………………………………………………………. 10 Anti-Virus/Anti-Malware
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Linux vs. Windows Question Linux vs. Windows Answer Users who are considering making a change from Windows to Linux or Linux to Windows commonly want to know the advantages and disadvantages of each of the operating systems. Below is a chart to help illustrate the major advantages and disadvantages of each of these operating systems. Topic Linux Windows Price The majority of Linux variants are available for free or at a much lower price than Microsoft Windows.
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Types of Operating Systems Within the broad family of operating systems‚ there are generally four types‚ categorized based on the types of computers they control and the sort of applications they support. The categories are: * Real-time operating system (RTOS) - Real-time operating systems are used to control machinery‚ scientific instruments and industrial systems. An RTOS typically has very little user-interface capability‚ and no end-user utilities‚ since the system will be a "sealed box"
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components of the program state are shared across threads in a multithreaded process? a. Register value b. Heap memory c. Global variable d. Stack memory Answer: The threads of a multithreaded process share heap memory and global variables. Each thread has its 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
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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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3.2 Including the initial parent process‚ how many processes are created by the program shown in Figure 3.31? #include <stdio.h> #include <unistd.h> int main() { /* fork a child process */ fork(); /* fork another child process */ fork(); /* and fork another */ fork(); return 0; } Figure 3.31 How many processes are created? Sol: To know how many processes are created we modified the program using getpid() and printf(). Please find the modified program below #include <stdio
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LINUX VS WINDOWS LINUX VS WINDOWS LINUX WINDOWS • Linux is an example of Open Source software development and Free Operating System (OS). • Linux can be freely distributed‚ downloaded freely‚ distributed through magazines‚ Books etc. There are priced versions for Linux also‚ but they are normally cheaper than Windows. . • Windows is the family of operating system (OS) from Microsoft‚ which is the most famous OS in the world. • For desktop or home use‚ Windows can be expensive. A single copy
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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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Components of an Operating System In order to perform the actions requested by the computer’s users‚ an operating system must be able to communicate with those users. The portion of an operating system that handles this communication is often called the user interface. Older user interfaces‚ called shells‚ communicated with users through textual messages using a keyboard and monitor screen. More modern systems perform this task by means of a graphical user interface (GUI) in which objects to be
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University of Phoenix Material Unix® and Linux® Comparison Matrix Directions: Choose three different versions of the UNIX® or Linux® operating systems to compare. Insert the three chosen versions and fill out the requested information in the Components column. UNIX® or Linux® operating system version: Ubuntu Components Your response Role of shell Even though many Ubuntu functions can be performed through the GUI‚ they can be completed faster through the shell. The default shell that Ubuntu
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