fundamentals of information systems security 3rd edition

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2018-2019-1 20165206 "Information Security system Design Fundamentals" 3rd Week Study Summary

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 3rd week Study summary-Textbook learning content Summary Program code: The GCC command invokes a complete set of programs to convert the source code into an executable file.First, the C preprocessor expands the source code;Second, the comp

20145239 "Information Security system Design Fundamentals" 7th Week Study Summary

more specific, but it's not quite understandable how the cache works, because there's some abstraction.This week's code hostingCode Link: https://git.oschina.net/929210354/LinuxLearning progress Bar lines of code (new /Cumulative) Blog volume ( new/cumulative) Learning time (new/cumulative) Important growth Goal 5000 rows 30 Articles 400 hours First week 0/0 1/2 10/10 Installing a Lin

Fundamentals of Information Security system design 11th week 20135218 Jing Mengxin

manipulating processes STRACE: Prints the trajectory of each system call that is being called by a running program and its child processes. Right PS: Lists the processes in the current system (including zombie processes) TOP: Prints out information about the current process resource usage. PMAP: Displays the memory mappings for the process. Proc: A virtual file system that outputs the contents of a large number of kernel data str

Information Security system Design Fundamentals third Week study summary

the representation and processing of the information in the 2nd Chapter(i), three kinds of important digital representationsUnsigned number: The encoding is based on the traditional binary notation (numbers greater than or equal to zero).Complement: Encoding is the most common way to represent signed integers (numbers that are positive or negative).Floating-point number: The encoding is a two-base version of the scientific notation for real numbers.Al

20145301 "Information Security system Design Fundamentals" 6th Week Study Summary

# 20145301 "Fundamentals of Information Security system Design" 5th Week study Summary# # Textbook Learning Content Summary* X86 addressing mode through three generations:1 The flat mode of the DOS era, not distinguishing between user space and kernel space, very insecure2-8086 segmented mode3 IA32 Flat mode with protected mode* CPU contains a set of 8 registers

2018-2019-1 20165214 "Information Security system Design Fundamentals" Third Week study summary

20165214 2018-2017-1 "Information Security system Design Fundamentals" The third week study summary of learning Contents1. In fact, the GCC command invokes a series of programs that convert the source code into executable code.2, the actual realization of the memory system is to combine multiple hardware memory and operating system software.3. ISA: Instruction se

Information Security system Design Fundamentals third Week study summary

its address, and the collection of all possible addresses is called the virtual address space.2.how the compiler and runtime systems divide the memory space into more manageable units to hold different program objects (program object), that is, procedural data, directives, and control information. the value of a pointer in C (whether it is pointing to an integer, a struct, or some other program object) is

Information Security system Design Fundamentals third Week study summary

, double Int→float will not overflow but may be roundedInt/float→double results retain exact valuesDouble→float may overflow to ±∞ and may be rounded due to small accuracyThe float/double→int rounds to 0 and can overflow.Problems encountered:1. Error in compiling the 28-page code in the bookCheck the code seems to be nothing wrong, do not know why ... at last, I commented out the line . The source code is as follows2. Exercise 2.52 do not understand, I hope the teacher can explain in classI

2018-2019-1 20165228 "Information Security system Design Fundamentals" Third Week study summary

2018-2019-1 20165228 "Fundamentals of Information Security system design" the third week of learning summary of the Learning Content Summary program machine-level representation: Two important abstractions of computer systems ISA (Instruction set architecture): Instruction set architecture, machine-level progr

20145311 "Information Security system design Fundamentals" Sixth Week study summary

20145311 "Information Security system Design Fundamentals" The sixth Week study summary textbook Learning content SummaryThe tables in the book are still very important. A program is compiled to run on one machine and cannot be run on another machineRegister%ESP are stack pointers, stack, call, and return instructionsProgram Counter PC holds the address of th

20145317 "Information Security system Design Fundamentals" 13th Week Study Summary

20145317 "Fundamentals of Information Security system design" 13th Week study summary textbook Learning content Summary Network programming client-server programming model An application consists of a server process and one or more client processes Server process, manage some kind of resource, by manipulating this resource to provide a service to its

2017-2018-1 20155222 "Fundamentals of Information Security system Design" 10th week IPC mechanism under Linux

2017-2018-1 20155222 "Fundamentals of Information Security system Design" 10th week IPC mechanism under Linux The communication mechanism between multiple processes under Linux is called IPC (inter-process Communication), which is a way of communicating with each other across multiple processes. There are several ways of interprocess communication under

20145317 "Information Security system Design Fundamentals" 7th Week study Summary 1

20145317 "Information Security system Design Fundamentals" 7th Week study summary 1 Textbook Learning content SummaryBasic storage technology: SRAM memory DRAM memory ROM memory rotary hard drive SSD1. Storage TechnologyThree common storage technologies: ram/rom/disk( 1 ) random access memory RAM Two categories: Static RAM (SRAM) and dynamic RAM (DRAM)

20145216 Shi Yao "Information Security system Design Fundamentals" 7th Week Study Summary

20145216 Shi Yao "Information Security system Design Fundamentals" Seventh week Study summary teaching Contents summary Sixth chapter memory hierarchyA memory system is a hierarchical structure of storage devices with different capacities, costs, and access times.CPU registers, cache memory, primary storage, disk.The first section of storage technologyOne, random

20145317 "Information Security system Design Fundamentals" 9th Week Study Summary 1

20145317 "Information Security system Design Fundamentals" 9th Week Study Summary 1Summary of learning contents of textbook 10.1 Unix I/O A UNIX file is a sequence of M bytes (b0b1b2 ... BM-1). All IO devices, such as networks, disks, and terminals, are modeled as files, and all inputs and outputs are executed as read and write to the corresponding file.

# 2018-2019-1 20165230 "Fundamentals of Information Security system Design" Third week study summary

2018-2019-1 20165230 "Fundamentals of Information Security system design" The third week study summary of learning Contents The actual implementation of the memory system is to combine multiple hardware memory and operating system software. How valid addresses are calculatedImm(Eb,Ei,s) = Imm + R[Eb] + R[Ei]*s ISA: Instruction set architecture, w

20145216 20145330 "Fundamentals of Information Security system design" a familiar environment for experimental development

20145216 20145330 "Fundamentals of Information Security system design" a familiar experimental report cover for the Experimental development environmentExperimental content1. Connecting the ARM Development Board2. Build HyperTerminal3. Start the experimental platform4. Modify the IP of the XP system and the Redhat virtual machine so that they are in the same netw

2018-2019-1 20165230 "Information Security system Design Fundamentals" Second week study summary

20165230 2018-2019-1 "Information Security system Design Fundamentals" The second week study summary of learning Contents There are two general rules for arranging the bytes of an object: The small-end method (least significant byte at the front) and the big-endian (the most significant byte in front). The expression x>>k will shift the X arithmetic right t

2018-2019-1 20165334 "Fundamentals of Information Security system Design" Third week study summary and Buffer Overflow Vulnerability experiment

2018-2019-1 20165334 "Fundamentals of Information Security system Design" Third week study summary and Buffer Overflow Vulnerability experiment One, instruction learning gcc -Og -o xxx.c learns to -Og tell the compiler to use an optimization level that generates machine code that conforms to the overall structure of the original C language code. gcc -Og -S xxx.cL

2018-2019-1 20165206 "Information Security system Design Fundamentals" 4th Week Study Summary

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 4th Week Study summary-Textbook learning content Summary Programmer-Visible state: Each instruction in the Y86-64 program reads or modifies portions of the processor state, which is known as the programmer's visible state. Includes: program register, condition code, program status, p

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