Network protocol
Application Layer
DHCPDNSFTPGopherHTTPIMAP4IRCNNTP XMPPPOP3 SIPSMTPSNMP SSHTelnet RPCRTCP RTPRTSPSDP SoapGTPStunNTPSSDP More
Transport Layer
TCPUDPTLSDCCP SCTPRSVPPPTP More
Network layer
IP (IPv4IPV6) ·ICMPICMPv6 IGMPIs-isIPSecBGPRIP OSPF ARPRarp More
Data Link Layer
Wi-Fi (IEEE 802.11) ·WiMAX (IEEE 802.16) ·ATMDTMToken Ring
"Note one: Single-carrier and Multicarrier transmission"MIMO-OFDM technology is the key technology of 3g-lte,wimax communication system and WLAN such as ieee802.11a,ieee802.11n and so on, as a communication dog, these should be knowledge that must be mastered. However, the undergraduate communication course is boring and disconnected from the actual system, in class, the teacher always lists a lot of professional terminology, what is said, but the con
enables conversion between multiple data formats by using a pass-through format."7" Application layer: The OSI layer closest to the user, which provides network services for user applications such as e-mail, file transfer, and terminal emulation. The following list is the classification of some of the agreements, if the wrong or wrong place, I hope that the great God put forward a lot! In fact, the protocol between the three tiers of application, representation, and session can be shared (due
Https://en.wikipedia.org/wiki/Lists_of_network_protocols
Protocol Stack:list of the network Protocol stacks
Wifi/wimax protocols
Bluetooth protocol
Fibre Channel Network Protocols
Internet Protocol Suite or TCP/IP model or TCP/IP stack
OSI protocols family of information exchange standards developed jointly by the ISO and the ITU-T
Routing protocols
List of IP protocol numbers, protocol numbers used in the Protocol field of the IPV4
AD Box mode:master/slave/parked device
3.5 802.16:wimax
Antenna:unlike 802.11, it has a large range
Downlink/uplink Scheduling
4 Cellular Internet Access
4.1 architecturelike The other architecture, it's hierarchical and consists a list of base station, users, and link s or protocols. In Cell
DirectoryIndustry NewsSharing the collaborative ecology of Harmony and innovation--2016 China Internet Conference Highlights Strobe 1Technological exchangesResearch on positioning technology in LTE communication system Lang for people, Wang Dapeng, Wu Fan 3The docking design of Smart Campus card and educational administration systemWang Yongjian, Zhangchun, Zhang Xin, Cao Siliang 10Research on storage architecture based on hyper-fusion Zhiyuan Li, Yang Wenjing, Wen Yu 14Application of video surv
convenience when used.When object is connection ,corresponding command: = {Show | up | down | add | edit | modify | delete | reload | load}The main implementation of the local network connection status of the view, management and other operationsManagement of local network connections via connection650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/72/AC/wKiom1Xq8bXSxj9OAAOD5aeX88E383.jpg "style=" float: none; "title=" Network management--nmcli01.jpg "alt=" Wkiom1xq8bxsxj9oaaod5aex88e3
802.11b (2.4ghz/11mbps), 802.11a (5ghz/54mbps), 802.11g (2.4ghz/54mbps) 3945ABG added to 802.11E standard support, support real-time applications such as VoIP through the real-time transmission of wireless connection, and further enhance the anti-jamming capability; 4965AGN supports the latest 802.11n protocol, which can be used in both 2.4GHz and 5GHz dual-band data with spatial Multiplexing MIMO (multiple input and output) and orthogonal Frequency Division multiplexing (OFDM, orthogonal Frequ
operating system and protocol software to manage the main tasks related to the network access layer. The modularization of the protocol stack enables software components in the network access layer dealing with hardware to provide interfaces for the upper layers unrelated to hardware.
Network access layer and OSI model-- The physical layer in the OSI model is responsible for converting data frames into bit streams suitable for transmission media. The data link layer completes two independent ta
where you need to find all the records that satisfy a certain condition, or you can convert each record to another form (the conversion operation is independent of each record, that is, the action on one record is unrelated to the other records). such as text parsing, specific value extraction, format conversion, etc. all belong to the latter case.Solution:Very simple, in the mapper operation, output the desired value or the converted form.Application:Log analysis, data query, ETL, data checkDi
the Linux system, and we believe that the role of the Linux system will be enhanced ."
Linux is the most popular open-source operating system that can be used, modified, and shared by the public. This means that it has a large developer team that can develop more attractive programs at a lower cost than Nokia's similar products. Nokia has launched Internet tablet to target consumers obsessed with high-tech products or support emerging technologies such as W
Article title: The latest stable version of LinuxKernel 2.6.29 is released. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories. Linus released the latest stable version kernel 2.6.29 this morning, later than 2.6.28 of the previous version March (a new version is basically 3 months), after 8 RC versions. 2.6.28 to 2.6.28.9, 2.4 series is 2.4.37.
Improvements in t
. Integrated Access Network dominated by triple playThe next-generation Integrated Service Access Network platform provided by Shanghai Bell Alcatel Provides bandwidth support for operators to deploy triple playback services. The next-generation Integrated Business System provides users with a variety of business services: narrowband voice POTS and ISDN services (BRI/PRI) multi-ADSL, LAN, and PON and WiMAX services will be extended in the future. Non-
networks, such as 3G or WiMax. They hope to use wireless broadband access networks as an aid for wired broadband access networks, this more or less represents the importance and expectations of enterprises for wide-area network access.
Ii. Lan
The LAN end is the line that is connected to the enterprise user. Some routers have LAN ports and can be connected to switches. Some network administrators connect the routers to the backbone switches and then
"capability preset" in the subsequent industrial practices, and the development of technology will gradually mature between such sudden changes, the evolution of communication technology over the past decade has also proved this point.
From the very beginning, 3G was an ever-evolving technology with an unprecedented number of "revisions. At the beginning of the research and formulation of the 3G standard, IP and broadband technologies were not yet popularized, while the ISDN technology was bein
required to have extremely difficult eavesdropping features during military development. The characteristics of ultra-wideband transmission are that the pulse signal cycle is extremely short (often in nanoseconds or second-level), and the transmit power of these signals is lower than the noise level of traditional radio receiving equipment, therefore, it is difficult to use a common RF receiver. In addition, the private keys in the UWB are encrypted using AES (Advanced Encryption Standard), and
As a broadband network for implementing high-speed Internet, there are currently some practical access methods, such as ADSL, CATV, fiber + LAN Ethernet, and WiMAX wireless access networks, but today we will talk about power line online PLC) and compare it with ADSL to understand it.
PLC is a new "last mile" SOLUTION
Similar to other broadband access methods, PLC is essentially a solution for local telecom or network companies. The "last mile" Wan end
, this will make the specifications more accepted by the market than the traditional "sequential" procedures. Due to prior cooperation with ECMAECMA-368 and ECMA-369), the current WiMedia specification has been approved by ISO.
Although the specifications have been approved internationally, they are not 3.1 ~ All UWB frequencies of 10.7GHz are available in every country. WiMedia is actively participating in the work of local regulatory authorities to resolve any possible conflicts when other fr
The Wireless World is booming, and various wireless technologies have begun to compete. The wireless UWB technology has great advantages in both cost and transmission speed. Other advantages are described below. The focus of this article is to introduce the six advantages of the wireless UWB technology.
The Ultra wide band is short for Ultra Wide Band. It is a non-carrier communication technology that transmits data using non-sine wave narrow pulses ranging from nanoseconds to microseconds, with
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