Andrew login ID: Full Name: CS 15-213, Spring 2004 Final Exam May 3, 2004 Instructions: Copyright By PowCoder代写 加微信 powcoder Make sure that your exam has 20 pages and is not missing any sheets, then write your full name and Andrew login ID on the front. Write your answers in the space provided below the […]
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Today: Four Fundamental OS Concepts • Thread: Execution Context – Fully describes program state – Program Counter, Registers, Execution Flags, Stack Copyright By PowCoder代写 加微信 powcoder • Address space (with or w/o translation) – Set of memory addresses accessible to program (for read or write) – May be distinct from memory space of the physical
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PowerPoint Presentation Chapter 16: Virtual Machines 1 Chapter 16: Virtual Machines Overview History Benefits and Features Building Blocks Types of Virtual Machines and Their Implementations Virtualization and Operating-System Components Examples 2 Chapter Objectives To explore the history and benefits of virtual machines To discuss the various virtual machine technologies To describe the methods used to
Chapter 8: Main Memory Chapter 8: Main Memory 1 Chapter 8: Memory Management 2 Background Swapping Contiguous Memory Allocation (Segmentation) Paging Structure of the Page Table Example: The Intel 32 and 64-bit Architectures Example: ARM Architecture Objectives To provide a detailed description of various ways of organizing memory hardware To discuss various memory-management techniques, including
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Introduction and Overview Virtualization: The CPU Questions answered in this lecture: What is a process? Why is limited direct execution a good approach for virtualizing the CPU? What execution state must be saved for a process? What 3 states could a process be in? CSE 2431 Systems II Based on slides by Andrea Arpaci-Dusseau, University
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CSCI-UA.0201-001 Computer Systems Organization Exam 2 Fall 2018 (time: 60 minutes) Last name: First name: NetID: Copyright By PowCoder代写 加微信 powcoder If you perceive any ambiguity in any of the questions, state your assumptions clearly. Questions vary in difficulty; it is strongly recommended that you do not spend too much time on any
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Computer Organization and Design Unit 12: Virtual Memory Slides developed by , , & C.J. Taylor at the University of Pennsylvania with sources that included University of Wisconsin slides Copyright By PowCoder代写 加微信 powcoder by , , , and . CIS 371: Comp. Org. & Design | Dr. | Virtual Memory 1 This Unit: Virtual
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In questions where you have to write code, minor syntax problems will not be penalised, as long as it is clear what you mean. It is a written exam, we do not expect to run your code. 1. (a) State Amdahl’s law and show how it is derived. (b) Suppose that the speedup obtained over
Buffer Overflow Attacks Introduction • A simplified, high-level view of buffer overflow attacks – x86 architecture – overflows on the stack – Focus on 32-bit mode, but most things directly apply to 64-bit mode as well Introduction • In languages like C, you have to tell the compiler how to manage the memory. – This
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Binary analysis and application security Data can be Code • Lots of the attacks we have seen trick a program into accept data that is really code, e.g., – SQL injection – XSS – Buffer overflow (next lecture) • This is a very common way to attack systems. “Little Bobby Tables” Code is Data •
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