The Open Systems Interconnection (OSI) model is a reference tool for understanding data communications between any two networked systems. It divides the communications processes into seven layers. Each layer both performs specific functions to support the layers above it and offers services to the layers below it. The
three lowest layers focus on passing traffic through the network to an end system. The top four layers come into play in the end system to complete the process.
A comprehensive yet comprehensible and witty guide to the latest advances in computer network security protocols. The author team includes Charlie Kaufman, currently chief security architect for Lotus Notes, and formerly Network Security Architect at Digital Equipment Corporation;
After studying this chapter you will be able to understand: How to build a scalable network that will support different applications? What is a computer network? How is a computer network different from other types of networks? What is a computer network architecture?
Wireless network refers to any type of computer network that is not connected by cables of any kind. It is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. Wireless telecommunications networks are generally implemented and administered using a transmission system called radio waves. This implementation takes place at the physical level (layer) of the OSI model network structure....
While I was writing this document a book "Hack Proofing Your Network" was released. I haven't been able to read it (dunno if its in print yet, and besides - everything takes a while to get to South Africa). I did however read the first chapter, as it is available to the public. In this chapter the author writes about different views on IT security - hackers, crackers, script kiddies and everything in between. I had some thoughts about this and decided that it was a good starting point for this document....
Immediately after the first drafts of the human genome sequence were reported almost
a decade ago, the importance of genomics and functional genomics studies became
well recognized across the broad disciplines of biological sciences research.
The protocol wars are over and TCP/IP won. TCP/IP is now universally recognized as the pre-eminent
communications protocol for linking together diverse computer systems. The importance of interoperable
data communications and global computer networks is no longer debated. But that was not always the
case. When I wrote the first edition of this book, IPX was far and away the leading PC communications
protocol. Microsoft did not bundle communications protocols in their operating system.
Managing Cisco Network Security, offers updated and revised information covering many of Cisco's security products that provide protection from threats, detection of network security incidents, measurement of vulnerability and policy compliance and management of security policy across an extended organization. These are the tools that network administrators have to mount defenses against threats.
Interconnecting Cisco Network Devices, Part 1 (ICND1), Second Edition, is a Cisco®-authorized, self-paced learning tool for CCENT™ and CCNA® foundation learning. This book provides you with the knowledge needed to configure Cisco switches and routers to operate in corporate internetworks. By reading this book, you will gain a thorough understanding of concepts and configuration procedures required to build a multiswitch, multirouter, and multigroup internetwork that uses LAN and WAN interfaces for the most commonly used routing and routed protocols....
The use of neural networks is permeating every area of signal processing. They can provide powerful means for solving many problems, especially in nonlinear, real-time, adaptive, and blind signal processing. The Handbook of Neural Network Signal Processing brings together applications that were previously scattered among various publications to provide an up-to-date, detailed treatment of the subject from an engineering point of view.
Computer Network Security: Theory and Practice introduces to the reader a complete and concise view of network security. It provides in-depth theoretical coverage of recent advancements and practical solutions to network security threats. This book can be used for a one-semester network security course for graduate and upper-level undergraduate students, as well as a reference for IT professionals.
Microsoft Corporation, the world's largest software vendor, and Cisco Systems, the world's largest internetworking vendor, have jointly developed a common software interface for managing Cisco hardware on Microsoft networks: Cisco Network Services for Active Directory (CNS/AD). Until now, network administrators have been forced to master two completely different product interfaces to effectively manage their networks. Configuring Cisco Network Services for Active Directory is the first book announced for this enormous Information Technology audience. ...
This thorough update to Novell's Complete Encyclopedia of Networking expands upon the original and provides a more comprehensive collection of data for all levels of network users. This Encyclopedia offers in-depth analysis of hardware, software, networking topologies, and network operating systems. Details on cabling, interface cards, shells, applications, standards, and protocols are also included. The companion CD contains the complete text of the encyclopedia, with graphics and tables.
Can you remember the frustration you felt the last time you needed to work on a document but couldn’t connect to the network to use it? What about the last time you wanted to write an email or get some work done on the Internet, but you had to go to a different location where you could use a networked system? Multiply these problems and frustrations by every employee who has every experienced them and you will understand,
if you don’t already, why wireless networking is becoming a requirement in many offices....
Objective: Identify the stages of the router boot sequence
Determine how a Cisco device locates and loads the Cisco IOS; use the boot system command; identify the configuration register values; briefly describe the files used by the Cisco IOS and their functions.
Upon completion of this lesson, the successful participant will be able to: Understanding the functions of switches, bridges and routers, discussing Internet Protocol (IP) for interconnecting networks, understanding the concept of routing.
In this chapter, the following content will be discussed: How do we build a routing system that can handle hundreds of thousands of networks and billions of end nodes? How to handle address space exhaustion of IPV4? How to enhance the functionalities of Internet?
Chapter 7 - Multimedia networking. Chapter 7, which focuses on multimedia networking, has gone through a major revision. The chapter now includes an in-depth discussion of streaming video, including adaptive streaming, and an entirely new and modernized discussion of CDNs. A newly added section describes the Netflix, YouTube, and Kankan video streaming systems. The material that has been removed to make way for these new topics is still available on the Companion Web site.
ðánh dâu tât c& các câu có noi dung ñúng:
A. M.ng máy tính (Computer Network) - là mot he
thông các máy tính kêt nôi vi nhau ñe th@c hien các công
B. M.ng máy tính là quá trình ñi dây cáp m.ng, và cài
ñat máy chG.
C. M.ng máy tính là he thông máy tính phân tán
Thuật ngữ computer network đề cập đến việc
kết nối những máy tính hoạt động độc lập lại với
nhau thông qua môi trường truyền thông.Mô hình OSI Là mô hình mạng chuẩn hóa do ISO
(International Standard Organization) đề nghị, Gồm có 7 lớp với các chức năng khác nhau. Định ra các tiêu chuẩn thống nhất cho các nhà
sản xuất, cung cấp sản phẩm, dịch vụ mạng, tổ chứ ISO công bố mô hình OSI (Open
System Interconnection (OSI))....