Bài giảng Mạng máy tính (Computer Networks): Chương 1 - Networking Basics cung cấp cho các bạn những kiến thức về lịch sử mạng máy tính, yếu tố của mạng máy tính, yêu cầu khi thiết kế lắp đặt mạng và một số nội dung khác.
Chapter 1 - Networking basics. This chapter has several objectives: to give a brief history of the internet, to give the definition of the two often-used terms in the discussion of the internet: protocol and standard, to categorize standard organizations involved in the internet and give a brief discussion of each, to define internet standards and explain the mechanism through which these standards are developed, to discuss the internet administration and give a brief description of each branch.
The U.S. Department of Defense (DoD) created the TCP/IP reference model because it wanted a network that could survive any conditions.
The TCP/IP model has since become the standard on which the Internet is based. In 1992 the standardization of a new generation of IP, often called IPng, was supported by the Internet Engineering Task Force (IETF). IPng is now known as IPv6.
Planning and Cabling Networks. Upon completion of this chapter, you will be able to:
Identify the basic network media required to make a LAN connection.
Identify the types of connections for intermediate and end device connections in a LAN.
Identify the pinoutconfigurations for straight-through and crossover cables.
Identify the different cabling types, standards, and ports used for WAN connections.
Define the role of device management connections when using Cisco equipment.
The primary duties of the transport layer, Layer 4 of the OSI model, are to transport and regulate the flow of information from the source to the destination, reliably and accurately. End-to-end control and reliability are provided by sliding windows, sequencing numbers, and acknowledgments
To understand reliability and flow control, think of someone who studies a foreign language for one year and then they visit the country where that language is used.
Cisco Systems, Inc., the worldwide leader
in networking for the Internet, has
prepared this guide to make networking
easier for your campus or district. If
you’re new to networking, it’s an ideal
introduction, starting with the most basic of components and helping you pinpoint the
best technologies and design for your network. If you already know your networking
ABCs, look to this guide for straightforward explanations of key terms and concepts to
keep building your knowledge base.
The first piece of hardware that I want to discuss is a network adapter. There are many different names for network adapters, including network cards, Network Interface Cards, NICs. These are all generic terms for the same piece of hardware. A network card’s job is to physically attach a computer to a network, so that the computer can participate in network communications.
Module E - Network basics. After completing this unit, you should be able to: Identify and describe the four basic concepts on which networks are built and describe what is needed to set up a small peer-to-peer network at home; describe the components used to build large business networks and define and compare local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs); compare and contrast the various Internet connection possibilities;...
Introduction to java programming: Chapter 25 - Netorking's Objectives is to comprehend socket-based communication in Java, understand client/server computing, to implement Java networking programs using stream sockets, obtain Internet address using the InetAddress class, develop servers for multiple clients.
Learning objectives of this chapter include: Identify the devices and protocols used in a small network; explain how a small network serves as the basis of larger networks; explain the need for basic security measures on network devices; identify security vulnerabilities and general mitigation techniques;...
Chapter summary: Computers communicate by using languages called protocols, protocols provide services to other protocols operating above and below them, a LAN uses a common network medium to connect computers in a relatively small area, a WAN uses an external network provider to connect LANs, broadband networks carry multiple signals at once, while baseband networks carry only one signal,...
Chapter summary: DHCP assigns IP addresses by using automatic, manual, or dynamic allocation; DNS resolves host and domain names into IP addresses; WINS resolves NetBIOS names into IP addresses; ping tests whether one computer running TCP/IP can communicate with another computer on the network;...and other contents.
Chapter 2 - Network hardware. The layered model that dominated data communication and networking literature before 1990 was the Open Systems Interconnection (OSI) model. Everyone believed that the OSI model would become the ultimate standard for data communications - but this did not happen. The TCP/IP protocol suite became the dominant commercial architecture because it was used and tested extensively in the Internet; the OSI model was never fully implemented. In this chapter, we first briefly discuss the OSI model and then we concentrate on TCP/IP as a protocol suite.
Chapter 3 - Network connections. Chapter summary: Use the Network And Dial-Up Connections window to manually install and configure the basic Windows 2000 networking components; use the Local Area Connection Properties dialog box of a network interface adapter to install, remove, and configure the TCP/IP networking components for that specific network interface adapter; use the Internet Protocol (TCP/IP) Properties dialog box to configure basic and advanced TCP/IP properties.
Chapter 4 - Networking software. Chapter summary: The Windows NT, Windows 2000, and UNIX operating systems include both server and client functionality; Novell NetWare is strictly a client/server network operating system; Windows NT and Windows 2000 were designed to provide application services and file and print services; a client is a software component that enables a computer to access server resources;...and other contents.
Chapter 6 - Network layer protocols. Chapter summary: Network layer protocols are responsible for end-to-end communications across the network; IP is a connectionless protocol that encapsulates transport layer data into datagrams; IPX is a proprietary standard that performs routing, addressing, and protocol identification; NetBIOS Extended User Interface (NetBEUI) is used by small Windows networks for LAN networking; AppleTalk provides basic networking to small networks.
Chapter 9 - TCP/IP routing. Chapter summary: DHCP assigns IP addresses by using automatic, manual, or dynamic allocation; DNS resolves host and domain names into IP addresses; WINS resolves NetBIOS names into IP addresses; ping tests whether one computer running TCP/IP can communicate with another computer on the network;...and other contents.
Chương này giới thiệu về môi trường phát triển tích hợp (IDE) Microsoft Visual Basic 6.0; cũng như giúp sinh viên có cái nhìn tổng quan về Visual Basic. Học xong chương này, sinh viên phải nắm bắt được các vấn đề sau: - Sử dụng môi trường phát triển tích hợp VB 6.0 để phát triển ứng dụng. - Cách tạo dự án mới (New Project) trong VB 6.0. Kiến thức có liên quan: - Sử dụng hệ điều hành Windows.
I. Giới thiệu về Visual Basic 6.0
Visual Basic 6.
Ebook "Network security technologies" presents key security technologies from diverse fields, using a hierarchical framework that enables understanding of security components, how they relate to one another, and how they interwork. This text is unique in that it classifies technologies as basic, enhanced, integrated, and architectural as a means of associating their functional complexities, providing added insight into their interrelationships. It introduces and details security components and their relationships to each other.
More complex networking services in Red Hat Linux require more advanced
administration methods. While graphical tools such as Network Configuration
(via the redhat-config-network command) are available to assist in configuring
all aspects of Linux networking, the best way to learn networking is by practicing with the key
command line utilities and associated configuration files.