The Open Systems Interconnection (OSI) model (ISO/IEC 7498-1) is a conceptual model that characterizes and standardizes the internal functions of a communications system by partitioning it into abstraction layers. The model is a product of the Open Systems Interconnection project at theInternational Organization for Standardization (ISO). The model groups similar communication functions into one of seven logical layers. A layer serves the layer above it and is served by the layer below it. For example
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SteganoGRAPHY documentation 1. Introduction 1.1 Purpose This SDS describes the various functions of our project. The actual design of the various modules and components of Student Information System is described in this document which takes care of various functionalities that our project aims to achieve and for determining the operating characteristics of the system. 1.2 Intended Audience and Reading Suggestions This SDS document is intended for any developers‚ project manager or documentation
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highlight the main differences. Cryptography is about conceal- ing the content of the message. At the same time encrypted data package is itself evidence of the existence of valuable information. Steganogra- phy goes a step further and makes the ciphertext invisible to unautho- rized users. Hereby we can de ne steganography as cryptography with the additional property that its output looks unobtrusively. Secret data | Unobtrusive media | [k>>4]*2^k*257/8‚s[j]=k^(k&k*2&34)
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Section 4.1 Divisibility and Modular Arithmetic 87 CHAPTER 4 Number Theory and Cryptography SECTION 4.1 Divisibility and Modular Arithmetic 2. a) 1 | a since a = 1 · a. b) a | 0 since 0 = a · 0. 4. Suppose a | b ‚ so that b = at for some t ‚ and b | c‚ so that c = bs for some s. Then substituting the first equation into the second‚ we obtain c = (at)s = a(ts). This means that a | c‚ as desired. 6. Under the hypotheses‚ we have c = as and d = bt for some s and t . Multiplying
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[pic] Amity Campus Uttar Pradesh India 201303 ASSIGNMENTS PROGRAM: MBA IB SEMESTER-IV |Subject Name : | |Study COUNTRY : | |Roll Number (Reg.No.) : | |Student
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Discovering Computers 2008 Chapter 9 Computer Security‚ Ethics and Privacy 1 2 Chapter 10 Objectives Describe the types of computer security risks Discuss the types of devices available that protect computers from system failure Identify ways to safeguard against computer viruses‚ worms‚ Trojan horses‚ botnets‚ denial of service attacks‚ back doors‚ and spoofing Explain the options available for backing up computer resources Discuss techniques to prevent unauthorized computer access and use
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Computer Networking: A Top-Down Approach Featuring the Internet‚ 4th Edition Solutions to Review Questions and Problems Version Date: June 21‚ 2007 This document contains the solutions to review questions and problems for the 4th edition of Computer Networking: A Top-Down Approach Featuring the Internet by Jim Kurose and Keith Ross. These solutions are being made available to instructors ONLY. Please do NOT copy or distribute this document to others (even other instructors). Please do not post
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SEMINAR PRIYANGA P RAO S7 EC ROLL NO: 41 VERICHIP VeriChip is the only Food and Drug Administration (FDA)-approved human-implantable radio-frequency identification (RFID) microchip. It is marketed by PositiveID‚ a subsidiary of Applied Digital Solutions‚ and it received United States FDA approval in 2004. About twice the length of a dime‚ the device is typically implanted between the shoulder and elbow area of an individual’s right arm.Once scanned at the proper frequency
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Chapter 11 Enterprise Resource Planning Systems 1. Closed database architecture is a. a control technique intended to prevent unauthorized access from trading partners. b. a limitation inherent in traditional information systems that prevents data sharing. c. a data warehouse control that prevents unclean data from entering the warehouse. d. a technique used to restrict access to data marts. e. a database structure that many of the leading ERPs use to support OLTP applications. 2. Each of the following
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CompTIA Security+ (Exam SY0-301) quick reference sheet Table of Contents .............................................................................. Fundamentals.............................................................................Page 1 Threats and Vulnerabilities.....................................................Page 1 Network Security.......................................................................Page 3 Application‚ Data‚ and Host Security..........................
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