Mobile office is the trend of modern society, the use of Laptop network card interface connected to the local area network, immediately can enter the working state. However, the settings for each LAN are not the same, such as IP address, gateway and
Use IE friends know that in the IE address bar to enter the Web site can visit a variety of Web sites, in fact, in IE, the address bar also has some other use functions, understand the use of these functions can be used for our computer to bring
802.11g In addition to 802.11b operating in the same 2.4GHz frequency band, in order to be compatible with existing 802.11B Wireless LAN devices. Two different OFDM orthogonal frequency division multiplexing coding techniques are also used to
In addition to providing convenient mobile access, enterprise wireless network also needs the security and management of the network, Tsinghua Tongfang has launched the enterprise access point TFW2180, enterprise security Policy management products
is already the E era, information sharing has become a means of efficiency, it must be accurate and rapid transmission between departments. For this reason, companies, businesses and government departments are pressing for improvements to these
1, why can not use the network debugging to verify the performance of the cable?
At present, many users of the installation of twisted-pair cable does not carry out certification testing, but in the network debugging process for testing, when the
At present, the main line of integrated wiring system is copper + fiber, 6 copper cable system because of the comprehensive cost of more than 5 class high 30%, so currently in the market about only about 30%. However, due to the push of application
The wiring frame centralized on-line means that the wiring frame horizontal equipment number and the vertical trunk cable serial number beforehand completes the jumper according to a certain proportion, through the program-controlled switchboard
Information resources play an important role in the financial system. Given the specific nature of the financial system, a single form of residence network is difficult to meet demand. Depending on the nature of the work of different departments,
The six standards that have been finalized have not only required the ability of the entire link to achieve six classes of performance, in order to protect the different businesses of the six products can be compatible with each other and replace,
About Dad--> Duplicate address detection
And IPv4 is the same, the difference is that the purpose of IPv6 sent is not broadcast. Instead, the requested node multicast address.
Functional principle:
Configuring IPV6 addresses in the network, if
Basic type
The basic type is suitable for the low configuration standard in the integrated wiring system, the copper core twisted pair network is used, and its configuration is as follows:
Each workspace has an information outlet
Wiring cable for
A brief account of ARP
Arp:address resolution Protocol Address Resolution Protocol.
Rarp:reverse Address resolution PROTOCOL reverse addressing Resolution protocol.
Different network, such as Ethernet, token network ..., there are different
Failure phenomenonAs the administrative building involved in more sensitive departments, so, according to the need to divide multiple VLANs, and set the corresponding access policies to improve data access security. Computers with different VLANs
We know that unlike traditional Web applications, Web 2.0 applications are typically built on Ajax and interactive Web services, a technology that transforms security professionals into new security challenges.
First, Introduction
This article
The application's security controls include two aspects of the timing and method of control, that is, where or when to control, and what basis to use for authority control.
In the previous few, I mentioned that the timing of security controls in a
The first chapter clarifies several concepts:Concept One: 485 bus communication distance can reach 1200 meters.In fact, only 485 bus structure theoretically under the premise of ideal environment can make the transmission distance reached 1200
When you perform a test on a cabling system, you are actually testing the system with a series of test parameters. These parameters determine whether the test system meets the performance requirements of the corresponding category, which is the
Many users at home through the Self-built proxy server, hubs, switches, routers and other equipment network surfing. Most home computer networks require few terminals and network equipment, and the network structure is simple, may ignore the
Since the end of 1995 to release the Test standard TSB-67 has been nearly three years, but some of the domestic wiring construction units in the project acceptance test, there are still some non-standard behavior.
Near-end crosstalk (NEXT) test
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