network objectives

1. Terminology of network communication1.1. Three modes of communicationUnicast, multicast, broadcast;1.2. LAN compositionComputers PCs Servers interconnections NICs Media Network devices Hubs Switches routers Protocols Ethernet IP ARP DHCP(1) Hub hubHub: Multiport repeater; hub does not remember which MAC address the packet was issued from, which MAC address is on which port of the hub; Hub features: Share

consideration for multiple networks and collaborative maintenance optimization, only through a single network to improve the performance of multiple networks passively. Multi-network collaboration ideas and Research In view of the coordinated development of multiple networks, ZTE has studied multiple network connections, user perception, service delivery, and co

First, determine whether the network type is WiFi, or 3G, or 2G networkConnectivitymanager connectmgr = (connectivitymanager) this.getsystemservice (Context.connectivity_service);networkinfoinfo=connectmgr.getactivenetworkinfo (); First, determine whether the network is WiFi, Be sure to make a non-null judgment before judging if there is no network connection Inf

Windows command line programThis part includes:Use ipconfig/all to view configurationsUse ipconfig/renew to refresh the configurationUse ipconfig to manage DNS and DHCP category IDSUse ping to test the connectionUse ARP to solve hardware address problemsUse NBTSTAT to solve NetBIOS name problemsUse netstat to display connection statisticsUse tracert to track Network ConnectionsUse pathping to test the vroUse ipconfig/all to view configurationsWhen det

Most enterprises pay attention to improve the security of the border of enterprise network, but do not mention how much they invest in this aspect, but the core intranet of most enterprise network is still very fragile. The following is a few strategies to address the security challenges of the enterprise intranet. These strategies are the defense strategy of the Intranet, and also a strategy to improve the

Differences between three network connections in VMware and three network connections in vmware 1. Overview After the virtual machine is installed, two virtual NICs, VMnet1 and VMnet8, are installed by default. VMnet1 is the host Nic and is used to connect to the network using the host method. VMnet8 is the NAT Nic, they are used to connect networks in NAT mode a

1. Overview TD-SCDMA Network Construction in the initial stage of optimization, its main purpose is to achieve network planning goals, find network coverage, service quality and other problems, and summarize the experience of network optimization, ensure the continuous development of

Network War law: You must know this. Network War law: Recently, the New York Times reported that the United States may use nuclear weapons to counter the destructive cyber attacks of hostile countries. In November 2017, a video entitled "Slaughterbots" was widely spread on social media and alleged that "artificial intelligence (AI) the controlled drone fleet can launch precise attacks against thousands of u

Java basics-network programming, java basics Network Programming I. IP and InetAddress Java supports the development of network communication programs. It mainly provides two communication protocols: TCP and UDP. Reliable connection and transmission, and third-party handshake Unreliable connection transmission, which is not necessarily acceptable to the receiv

As a key school in Jiangxi Province, Cangnan Middle School was listed as a pilot school in the province by the Ministry of Education of Jiangxi Province, and planned to promote the network application of the school gradually to the whole province. The new campus, an area of more than 20,000 square meters. Cangnan Middle School Initial Network application basic requirements are able to meet the campus

whether it is the use of network technology or network fault troubleshooting, as a network administrator we should have a certain understanding, then here is detailed for us to explain. How many people do we know about wireless network technology ? for a wireless network fai

Recently all in the system related knowledge, network knowledge has not begun to tidy up, but hurriedly network this classification a little empty, today share the basic knowledge of the network-network infrastructureThe basic structure of the network is the most basic knowl

Network basics required course series graphic network card hardware-accessories 2 Http://old.hbtcm.edu.cn/sites/xxzx/hardware/6.htm ● Data Mercury Figure 10 Data Mercury Data mercury is a device on the consumption-level PCI Nic. Data mercury is also called a Network Transformer or a network isolation transforme

This article analyzes kernel-based Linux kernel 1.2.13 Original works, reprint please mark http://blog.csdn.net/yming0221/article/details/7488828 For more please refer to the column, address http://blog.csdn.net/column/details/linux-kernel-net.html Author: Yan Ming Later series of blog posts will deeply analyze the network stack implementation principles of the Linux kernel. After Dr. Cao Guiping's analysis, he decided to select Linux kernel 1.2.13 f

The Development of China's wireless mesh network is still very rapid, so I have studied the comprehensive comparison between the Wireless Mesh Network and other access network technologies. I would like to share with you here, I hope it will be useful to you. Wi-Fi is based on the IEEE802.11x standard technology. Currently, Wi-Fi includes IEEE802.11b, 802.11a, an

To form a basic network, you need only one hub (hub) or one switch, several NICs, and dozens of-meter UTP lines to complete.In fact, such a simple network is the basic unit of a more complex network. By connecting these small, simple networks together, they form aMore complex local area networks (LANs).3.1 The simplest network650) this.width=650; "Src=" Http://s5