CompTIA Security+ Study Guide SY0-401 - download pdf or read online

By Chuck Easttom, Emmett Dulaney

All of the try prep you would like for examination SY0-401

In this hugely expected new version of the preferred CompTIA safety+ examine advisor, most sensible safeguard gurus Emmett Dulaney and Chuck Easttom arrange you for the most recent CompTIA defense+ examination, SY0-401. They disguise examination necessities similar to community defense, compliance and operational safeguard, threats and vulnerabilities, and alertness, information, and host security—and they provide very important insights from their a long time of safeguard event. This CompTIA licensed courseware includes:

Full insurance of all examination goals in a scientific procedure, so that you will be convinced you’re getting the guideline you wish for the exam

Practical written labs to augment serious skills

Real-world eventualities that positioned what you’ve realized within the context of exact task roles

Challenging evaluate questions in every one bankruptcy to organize you for examination day

Exam necessities, a key characteristic in each one bankruptcy that identifies serious parts you need to develop into educated in prior to taking the exam

A convenient part that maps each legitimate examination target to the corresponding bankruptcy within the e-book so that you can song your examination prep aim by way of objective

A coupon that saves you 10% on CompTIA examination vouchers

Sybex examination Prep Tools

Go to to entry a whole set of research instruments that can assist you arrange for the examination, including:

Chapter evaluate questions
A pre-assessment test
Full-length perform exams
Over a hundred digital flashcards
Glossary of key terms

Includes assurance of all examination pursuits, together with those key topics:

Network security
Compliance and operational security
Threats and vulnerabilities
Application, information, and host security
Access keep watch over and id management

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Sample text

By nature, all the functions in the library are shared (this is the definition of a function library), meaning that any program that includes libc will have access to these functions. You can see where this is going—if any program can access these common functions, why couldn’t one of our exploits? All we have to do is direct execution to the address of the library function we want to use (with the proper arguments to the function, of course), and it will be executed. For our Return to libc exploit, let’s keep it simple at first and spawn a shell.

More code . . qxd:WileyRed 8 Part I 7/11/07 ■ 7:24 AM Page 8 Introduction to Exploitation: Linux on x86 This could be translated to, in assembly: number dw 0 . more code . . mov eax,number inc eax mov number,eax We use the Define Word (DW) instruction to define a value for our integer, number. Next we put the value into the EAX register, increment the value in the EAX register by one, and then move this value back into the number integer. Look at a simple if statement in C++: int number; if (number<0) { .

Memory Management To use this book, you will need to understand modern memory management, specifically for the Intel Architecture, 32 Bit (IA32). Linux on IA32 is covered exclusively in the first section of this book and used in the introductory chapters. You will need to understand how memory is managed, because most security holes described in this book come from overwriting or overflowing one portion of memory into another. INSTRUCTIONS AND DATA A modern computer makes no real distinction between instructions and data.

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CompTIA Security+ Study Guide SY0-401 by Chuck Easttom, Emmett Dulaney

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